Liaisons dangereuses: cross-border gene flow and dispersal of insecticide resistance-associated genes in the mosquito Aedes aegypti from Brazil and French Guiana.
CONCLUSIONS: The present study highlights the need for regional-local vector surveillance and transnational collaboration between neighboring countries to assess the impact of implemented vector control strategies, promote timely actions and develop preparedness plans. PMID: 31553370 [PubMed - in process] (Source: Memorias do Instituto Oswaldo Cruz)
Source: Memorias do Instituto Oswaldo Cruz - September 26, 2019 Category: Infectious Diseases Authors: Salgueiro P, Restrepo-Zabaleta J, Costa M, Galardo AKR, Pinto J, Gaborit P, Guidez A, Martins AJ, Dusfour I Tags: Mem Inst Oswaldo Cruz Source Type: research
Towards the optimization of botanical insecticides research: Aedes aegypti larvicidal natural products in French Guiana.
I, Houël E Abstract Natural products have proven to be an immeasurable source of bioactive compounds. The exceptional biodiversity encountered in Amazonia, alongside a rich entomofauna and frequent interactions with various herbivores is the crucible of a promising chemodiversity. This prompted us to search for novel botanical insecticides in French Guiana. As this French overseas department faces severe issues linked to insects, notably the strong incidence of vector-borne infectious diseases, we decided to focus our research on products able to control the mosquito Aedes aegypti. We tested 452 extracts obta...
Source: Acta Tropica - September 17, 2019 Category: Infectious Diseases Authors: Falkowski M, Jahn-Oyac A, Odonne G, Flora C, Estevez Y, Touré S, Boulogne I, Robinson JC, Béreau D, Petit P, Azam D, Coke M, Issaly J, Gaborit P, Stien D, Eparvier V, Dusfour I, Houël E Tags: Acta Trop Source Type: research
Antibacterial effect of non-thermal atmospheric plasma against soft rot bacteria on paprika
Publication date: January 2020Source: LWT, Volume 117Author(s): Seon-Min Go, Hyun-Seung Kim, Mi-Ri Park, Rae-Dong JeongAbstractNon-thermal atmospheric plasma (NTAP) was examined for its antibacterial activity of Pectobacterium carotovorum subsp. carotovorum on paprika. Bacterial populations were completely inhibited in response to NTAP treatment at 1000 W for 30 s–90 s. To further assess the mechanisms that NTAP treatment inactivates bacterial populations, the morphology and membrane damage of bacterial cells were analyzed. The bacterial cells treated with NTAP for 90 s at 1000 W exhibited noticeable disr...
Source: LWT Food Science and Technology - September 10, 2019 Category: Food Science Source Type: research
Emergence of P. vivax resistance to chloroquine in French Guiana.
The objective of this study was to collect data on chloroquine resistance in French Guiana by associating a retrospective evaluation of the therapeutic efficacy and an analysis of recurrent parasitemia from any patients.Patients with P. vivax infection, confirmed by microscopy and temperature ≥37.5°C, were retrospectively identified at Cayenne Hospital between 2009 and 2015. Follow-up and treatment responses were performed according to the World Health Organization protocol. Parasite resistance was confirmed after dosage of plasmatic concentration of chloroquine and microsatellite characterization. The pvmdr1 and pv...
Source: Antimicrobial Agents and Chemotherapy - September 3, 2019 Category: Microbiology Authors: Musset L, Heugas C, Naldjinan R, Blanchet D, Houze P, Abboud P, Volney B, Walter G, Lazrek Y, Epelboin L, Pelleau S, Ringwald P, Legrand E, Demar M, Djossou F Tags: Antimicrob Agents Chemother Source Type: research
Determination of seven illegal dyes in Egyptian spices by HPLC with gel permeation chromatography clean up
Publication date: Available online 30 August 2019Source: Journal of Food Composition and AnalysisAuthor(s): Ahmed Salem Sebaei, Manar Ibrahim YoussifAbstractSudan I, II, III, IV, Para Red, Orange G and Red 7B are synthetic regularly dyes utilized to dye plastics and other manufactured materials. In recent years, concerns about the genotoxic possibilities of Sudan colors have been raised. A few national bodies and food experts consider Sudan dyes to be genotoxic cancer-causing agents while others view these dyes as possible cancer-causing agents. Therefore, it is of the outmost importance to assess the risk and presence of ...
Source: Journal of Food Composition and Analysis - August 31, 2019 Category: Food Science Source Type: research
Effect of storage time on microstructure, viscoelastic and biochemical parameters of Afuega'l Pitu cheese (PDO): Atroncau Blancu and Roxu varieties
Publication date: Available online 29 August 2019Source: LWTAuthor(s): Lorena Piñeiro-Lago, Inmaculada Franco, Laura Campo Deaño, Clara A. TovarAbstractStructural (cryo-scanning electron microscopy), and viscoelastic changes (dynamic rheometry), with storage time in Afuega'l Pitu cheese Blancu (B) and Roxu (R) varieties were observed. Biochemical parameters were also measured. pH, fat, and protein content did not change during the storage time for B and R varieties. R micrographs showed large fused-fat particles within the protein matrix, as a consequence of a specific kneading step to mix the partially dehyd...
Source: LWT Food Science and Technology - August 29, 2019 Category: Food Science Source Type: research
Evaluation of Enterococcus faecium NRRL B-2354 as a potential surrogate of Salmonella in packaged paprika, white pepper and cumin powder subjected to radio frequency heating
This study aimed to (1) determine the thermal resistance (D and z values) of Salmonella and Enterococcus faecium NRRL B-2354 as a promising surrogate for thermal validation studies using paprika, white pepper, and cumin powders, and (2) determine the efficacy of RF on the inactivation of both microorganisms in packaged samples. Samples of paprika, white pepper, and cumin powders with initial water activity levels () of 0.45 ± 0.05 were inoculated with Salmonella cocktail (S. Typhimurium, S. Agona, S. Montevideo, and S. Tennessee) and E. faecium NRRL B-2354 at approximately 8.5 log CFU/g. Inoculated samples were load...
Source: Food Control - August 20, 2019 Category: Food Science Source Type: research
IJERPH, Vol. 16, Pages 2724: Air Drep —A Retrospective Study Evaluating the Influence of Weather Conditions and Viral Epidemics on Vaso-Occlusive Crises in Patients with Sickle Cell Disease Living in French Guiana
Conclusions: This study shows a link between climate, flu epidemics, and VOC in French Guiana. Patient&rsquo;s awareness of risks related to climate and flu epidemics should be encouraged, as home prevention measures can help avoid painful crises. Moreover, physicians should encourage patients to get immunized for influenza every year. (Source: International Journal of Environmental Research and Public Health)
Source: International Journal of Environmental Research and Public Health - July 31, 2019 Category: Environmental Health Authors: Marie-Claire Parriault Claire Cropet Aniza Fahrasmane St éphanie Rogier Micha ël Parisot Mathieu Nacher Narcisse Elenga Tags: Article Source Type: research
Trophic interactions between the Kelp Gull (Larus dominicanus) and Royal and Cayenne terns (Thalasseus maximus maximus and Thalasseus sandvicensis eurygnathus, respectively) in a human-modified environment
Canadian Journal of Zoology, e-First Articles. Many closely related seabirds nest in mixed colonies, and this association may result in interspecific interactions such as competition for common resources and kleptoparasitism. Trophic interactions were evaluated between the Kelp Gull (Larus dominicanus Lichtenstein, 1823) and Royal and Cayenne terns (Thalasseus maximus maximus (Boddaert, 1783) and Thalasseus sandvicensis eurygnathus (Saunders, 1876), respectively) nesting at a mixed-species colony in an area with high availability of recreational fishery waste for the opportunistic Kelp Gull. Diet analyses were based on gul...
Source: Canadian Journal of Zoology - June 26, 2019 Category: Zoology Authors: Cristian Marinao Nicol ás Suárez Pablo Yorio Source Type: research
[Second Day Dedicated to the Scientific Works of Young Doctors in French Guiana: Our Residents' Got Talent Universit é de la Guyane, Cayenne, French Guiana].
[Second Day Dedicated to the Scientific Works of Young Doctors in French Guiana: Our Residents' Got Talent Université de la Guyane, Cayenne, French Guiana]. Bull Soc Pathol Exot. 2019;112(1):30-46 Authors: Epelboin L, Douine M, Henaff F, Mutricy R, Lucarelli A, Bonifay T, Niemetzky F PMID: 31225724 [PubMed - in process] (Source: Bulletin de la Societe de Pathologie Exotique)
Source: Bulletin de la Societe de Pathologie Exotique - June 22, 2019 Category: Tropical Medicine Tags: Bull Soc Pathol Exot Source Type: research
Incidence and levels of Alternaria mycotoxins in spices and herbs produced worldwide and commercialized in Lebanon
This study provide large information on the natural occurrence of Alternaria mycotoxins in spices and herbs useful for the human exposure assessment and future regulation. (Source: Food Control)
Source: Food Control - June 20, 2019 Category: Food Science Source Type: research
Sensors, Vol. 19, Pages 2596: Fusion of Spectroscopy and Cobalt Electrochemistry Data for Estimating Phosphate Concentration in Hydroponic Solution
This study aimed to develop a data fusion approach for determining phosphate concentrations in a paprika nutrient solution. As a conventional multivariate analysis approach using spectral data, partial least squares regression (PLSR) and principal components regression (PCR) models were developed using 56 samples for calibration and 24 samples for evaluation. The R2 values of estimation models using PCR and PLSR ranged from 0.44 to 0.64. Furthermore, an estimation model using raw electromotive force (EMF) data from cobalt electrodes gave R2 values of 0.58&ndash;0.71. To improve the model performance, a data fusion ...
Source: Sensors - June 7, 2019 Category: Biotechnology Authors: Dae-Hyun Jung Hak-Jin Kim Hyoung Seok Kim Jaeyoung Choi Jeong Do Kim Soo Hyun Park Tags: Article Source Type: research
Adulteration of beetroot red and paprika extract based food colorant with Monascus red pigments and their detection by HPLC-QTof MS analyses
Publication date: Available online 18 May 2019Source: Food ControlAuthor(s): Bernhard Thalhamer, Wolfgang BuchbergerAbstractAn intense red food colorant found as a wholesale good for the European market and claimed as a mixture of beetroot red and paprika extract was investigated.The vibrant color intensity could not be readily explained because the measured amounts of dyes typical for beetroot red and paprika extract were too low. These facts led to the question of the source of the intense color, which is the focus of the present work. Efforts were made in the development of high performance liquid chromatography (HPLC) ...
Source: Food Control - May 18, 2019 Category: Food Science Source Type: research
Preparation and characteristics of octenyl succinic anhydride-modified partial waxy rice starches and encapsulated paprika pigment powder
Publication date: Available online 17 May 2019Source: Food ChemistryAuthor(s): Junhee No, Malshick ShinAbstractPhysicochemical properties and emulsion stability of octenyl succinic anhydride (OSA)-modified partial waxy rice Baegjinju starches which were made with different OSA additions and the color stability of the encapsulated paprika pigment powder using the OSA starch were investigated. The DSs of the OSA starches ranged from 0.0152-0.0269. The band at 3303 cm-1 reduced as the OSA levels increased, but the A-type crystallinity was maintained. The oil absorption and emulsion stability, the short chain (DP6-12) amylopec...
Source: Food Chemistry - May 18, 2019 Category: Food Science Source Type: research
Supercritical fluid chromatography coupled to tandem mass spectrometry for the analysis of pesticide residues in dried spices. Benefits and drawbacks.
This study describes the high sensitivity and the reduced ion suppression and matrix effect that can be achieved by supercritical fluid chromatography (SFC) in the analysis of dried spices as complex matrices. Samples selected for the evaluation were cayenne and black pepper, which are representative of complex dried spices. To carry out the evaluation of this technique, blank samples were fortified with a solution containing 162 pesticides at two concentration levels (50 and 200 μg kg-1). During the modified QuEChERS method, EMR sorbent was used as dispersive SPE in the clean-up step. The samples were analysed by s...
Source: Analytica Chimica Acta - March 18, 2019 Category: Chemistry Authors: Cutillas V, Murcia-Morales M, Gómez-Ramos MDM, Taha SM, Fernández-Alba AR Tags: Anal Chim Acta Source Type: research
[First Day Dedicated to the Scientific Works of Young Doctors in French Guiana - Our Residents' Got Talent: Campus Troubiran, universit é de Guyane, Cayenne, Guyane].
[First Day Dedicated to the Scientific Works of Young Doctors in French Guiana - Our Residents' Got Talent: Campus Troubiran, université de Guyane, Cayenne, Guyane]. Bull Soc Pathol Exot. 2018;111(1):56-67 Authors: Epelboin L, Bonifay T, Adriouch L, Bonnefoy C, Demar M, Dueymes M, Henaff F, Huber F, Jolivet A, Krajewski J, Mahamat A, Martin E, Nacher M, Nkontcho F, Sabbah N, Sanna A, Schaub R, Niemetzky F, Douine M PMID: 30763503 [PubMed - in process] (Source: Bulletin de la Societe de Pathologie Exotique)
Source: Bulletin de la Societe de Pathologie Exotique - February 16, 2019 Category: Tropical Medicine Tags: Bull Soc Pathol Exot Source Type: research
Pediatric Amazonian Toxoplasmosis Caused by Atypical Strains in French Guiana, 2002–2017
Conclusions: As in adults, pediatric Amazonian toxoplasmosis requires a systematic treatment. Symptoms such as skin rash, rhinorrhea and pharyngitis should not be mistaken for viral infections, when associated with lymphadenopathy or fever. Pediatricians working in South America should be familiar with these clinical presentations and with the different risk factors of Amazonian toxoplasmosis. (Source: The Pediatric Infectious Disease Journal)
Source: The Pediatric Infectious Disease Journal - February 14, 2019 Category: Infectious Diseases Tags: Original Studies Source Type: research
Sensitive detection of Piper nigrum L. adulterants by a novel screening approach based on qPCR
Publication date: Available online 18 January 2019Source: Food ChemistryAuthor(s): Ana I. Sousa, M.P. Isabel, L.V.O. Ferreira, Miguel A. FariaAbstractThe spice made from the fruits of Piper nigrum L. (Piperaceae) has high economic value since the beginnings of international trade. Because its price has been increasing, adulterations with papaya seeds, cayenne pepper and maize flour were reported. These have been screened by methodologies dedicated to the detection of single adulterants lacking sensitivity and specificity. Herein we propose a specific, highly-sensitive, high-throughput and affordable qPCR-based methodology ...
Source: Food Chemistry - January 20, 2019 Category: Food Science Source Type: research
Sensors, Vol. 18, Pages 4479: Determination of HPLC-UV Fingerprints of Spanish Paprika (Capsicum annuum L.) for Its Classification by Linear Discriminant Analysis
te; Manuel Díaz-Cruz Oscar Núñez The development of a simple HPLC-UV method towards the evaluation of Spanish paprika&rsquo;s phenolic profile and their discrimination based on the former is reported herein. The approach is based on C18 reversed-phase chromatography to generate characteristic fingerprints, in combination with linear discriminant analysis (LDA) to achieve their classification. To this aim, chromatographic conditions were optimized so as to achieve the separation of major phenolic compounds already identified in paprika. Paprika samples were subjected to a sample extraction...
Source: Sensors - December 18, 2018 Category: Biotechnology Authors: Xavier Cet ó N úria Serrano Miriam Arag ó Alejandro G ámez Miquel Esteban Jos é Manuel Díaz-Cruz Oscar N úñez Tags: Article Source Type: research
Effect of storage temperatures and duration on quality of prepared chicken breast with paprika oleoresin
The objective of this study was to investigate the effect of storage temperatures and time on discoloration and oxidation of prepared chicken breast with paprika oleoresin. Freshly prepared chicken breast containing paprika oleoresin was stored at −2, −10, −18°C, and an oscillating temperature between −10 and −18°C (−10/−18°C). A significant decrease in redness was detected at −2, −10, and −10/−18°C. The lowest TBARS values and carbonyl contents were observed in the samples stored at −18°C for 5 weeks. Also, the values of sulfh...
Source: Animal Science Journal - December 18, 2018 Category: Zoology Authors: Qing Lu, Jingxin Sun, Ming Huang, Yuchen Guo, Arif Memon Tags: ORIGINAL ARTICLE Source Type: research
Clinical Features, Diagnosis, and Outcome of Encephalitis in French Guiana.
Abstract The aim of our study was to describe the clinical features, the etiologies, and the factors associated with poor outcome of encephalitis in French Guiana. Our study was retrospective, including all cases of encephalitis hospitalized in the Cayenne General Hospital, from January 2007 to July 2017. Patients were included through the 2013 encephalitis consortium criteria and the outcome was evaluated using the Glasgow outcome scale at 3 months from the diagnosis of encephalitis. We included 108 patients, giving an approximate incidence rate of four cases/100,000 inhabitants/year. The origin of the encephalit...
Source: The American Journal of Tropical Medicine and Hygiene - December 17, 2018 Category: Tropical Medicine Authors: Roux A, Houcke S, Sanna A, Mathien C, Mayence C, Gueneau R, Liegeon G, Walter G, Resiere D, Elenga N, Resin G, Djossou F, Hommel D, Kallel H Tags: Am J Trop Med Hyg Source Type: research
(3R, 3'R)-Zeaxanthin protects the retina from photo-oxidative damage via modulating the inflammation and visual health molecular markers.
Abstract PURPOSE: Zeaxanthin protects the macula from ocular damage due to light or radiation by scavenging harmful reactive oxygen species. In the present study, zeaxanthin product (OmniXan®; OMX), derived from paprika pods (Capsicum annum; Family-Solanaceae), was tested for its efficacy in the rat retina against photooxidation. METHODS: Forty-two male 8-week-old Wistar rats exposed to 12L/12D, 16L/8D and 24L/0D hours of intense light conditions were orally administrated either 0 or 100 mg/kg BW of zeaxanthin concentration. Retinal morphology was analyzed by histopathology, and target gene express...
Source: Cutaneous and Ocular Toxicology - December 4, 2018 Category: Toxicology Authors: Sahin K, Akdemir F, Orhan C, Tuzcu M, Gencoglu H, Sahin N, Ozercan IH, Ali S, Yilmaz I, Juturu V Tags: Cutan Ocul Toxicol Source Type: research
Qualitative and quantitative multivariate strategies for determining paprika adulteration with SUDAN I and II dyes
Publication date: March 2019Source: Microchemical Journal, Volume 145Author(s): Cristina Márquez, Itziar Ruisánchez, M. Pilar CallaoAbstractTwo strategies based on multivariate qualitative and quantitative analysis are proposed for determining whether paprika samples are adulterated with Sudan I or II dyes. The samples were characterized by their UV–visible spectrum. Then, the following chemometric techniques were applied: principal component analysis (PCA) for the data exploration stage, partial least squares-discriminant analysis (PLS-DA) for the qualitative strategy and partial least squares (PLS) fo...
Source: Microchemical Journal - November 28, 2018 Category: Chemistry Source Type: research
Pigmented Contact Lenses for managing Ocular Disorders
Publication date: Available online 19 November 2018Source: International Journal of PharmaceuticsAuthor(s): Poorvajan Sekar, Phillip J. Dixon, Anuj ChauhanAbstractBlocking a selected wavelength range from the light spectrum can have multiple benefits. Ultra-violet (UV) radiation is detrimental to the retina, necessitating its blocking through sunglasses and contact lenses. The near-visible light also has enough energy to cause damage but, is typically not blocked by commercial lenses. Filtering light can also be useful to patients with migraines, amblyopia, and color blindness. Here, to achieve blocking, incorporation of p...
Source: International Journal of Pharmaceutics - November 19, 2018 Category: Drugs & Pharmacology Source Type: research
Surveillance of Chlorantraniliprole Residues in Vegetables and Fruits Using LC-MS/MS.
Authors: Nakajima T, Otsuka K, Tomizawa S, Masubuchi T, Kamijo K, Yamaki Y, Yoshikawa S, Hasegawa E, Kokaji Y, Watanabe S, Hashimoto T Abstract We measured the residual amounts of chlorantraniliprole in various vegetables and fruits. Sample solutions were prepared according to our routine procedure based on the QuEChERS method and analyzed by LC-MS/MS. Performance characteristics were evaluated for 8 kinds of food samples by means of recovery tests of 5 replicates at the concentration of 10 ng/g. Recoveries and RSDs (％) ranged from 50.2 to 93.4％ and from 2.1 to 9.7％, respectively. Application of this method t...
Source: Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan - November 16, 2018 Category: Food Science Tags: Shokuhin Eiseigaku Zasshi Source Type: research
Antifungal effect of non-thermal atmospheric plasma and its application for control of postharvest Fusarium oxysporum decay of paprika
Publication date: Available online 15 November 2018Source: Food ControlAuthor(s): Seon-Min Go, Mi-Ri Park, Hyun-Seung Kim, Won Seok Choi, Rae-Dong JeongAbstractNon-thermal atmospheric plasma (NTAP) has been shown to be effective for controlling postharvest fungi in vitro, but little is known regarding its mode of action, fungal response to NTAP, and the effect of its application on fresh produce. NTAP was evaluated for its in vitro and in vivo antifungal activity against Fusarium oxysporum on paprika. NTAP treatment resulted in complete inhibition of mycelial growth and spore germination of F. oxysporum, particularly at 10...
Source: Food Control - November 16, 2018 Category: Food Science Source Type: research
Comparative Analyses of the Transcriptome and Proteome of Comte de Paris and Smooth Cayenne to Improve the Understanding of Ethephon-Induced Floral Transition in Pineapple
Conclusion: These findings contribute to the understanding of the molecular mechanism underlying the variation between CP and SC in response to ethephon-mediated floral induction.Cell Physiol Biochem 2018;50:2139 –2156 (Source: Cellular Physiology and Biochemistry)
Source: Cellular Physiology and Biochemistry - November 9, 2018 Category: Cytology Source Type: research
Decreased antibiotic susceptibility of Enterobacteriaceae causing community-acquired urinary tract infections in French Amazonia.
CONCLUSIONS: Antibiotic susceptibility in UTI is lower than reported in metropolitan France without evidence for an excessive consumption of antibiotics. PMID: 30385068 [PubMed - as supplied by publisher] (Source: Medecine et Maladies Infectieuses)
Source: Medecine et Maladies Infectieuses - November 4, 2018 Category: Infectious Diseases Tags: Med Mal Infect Source Type: research
Thermal transitions and enthalpic relaxations as related to the stability of microencapsulated paprika powders
Publication date: Available online 9 October 2018Source: Journal of Food EngineeringAuthor(s): Josefina Porras-Saavedra, Leonardo Cristian Favre, Liliana Alamilla-Beltrán, María Florencia Mazzobre, Gustavo Fidel Gutiérrez-López, María del Pilar BueraAbstractPresent work investigates the effect of thermal transitions and enthalpy relaxation phenomenon on the physico-chemical stability of paprika microencapsulated powders. Wall materials were combinations of soy protein isolates, maltodextrin and gum arabic. Powders stability was evaluated through the solid-water interactions, determined by...
Source: Journal of Food Engineering - October 10, 2018 Category: Food Science Source Type: research
[Capsaicinoids and cayenne pepper extract].
Authors: Melhorn S, Staubach P PMID: 30291400 [PubMed - as supplied by publisher] (Source: Der Hautarzt: Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete)
Source: Der Hautarzt: Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete - October 8, 2018 Category: Dermatology Tags: Hautarzt Source Type: research
Inhibitory Effect of Spice Powders on the Development of Heated and Irradiated Bacillus subtilis Spores as Evaluated by Calorimetry.
Authors: Sakai T, Tsuchido T, Furuta M Abstract Inhibitory effects of the powders of paprika, red pepper, black pepper, sage, oregano and thyme in a solid medium after heat treatment and gamma-irradiation on the development from spore of Bacillus subtilis were examined using calorimetry. Based on the f(t) curve (Antoce et al., 1996) from the thermogram obtained, two parameters, the growth rate constant and the growth retardation time, were used to evaluate the inhibitory effect. The inhibitory effects of paprika and red pepper powders were enhanced by the spore pretreatment with heat, but not significantly with irr...
Source: Biocontrol Science - September 28, 2018 Category: Microbiology Tags: Biocontrol Sci Source Type: research
Non-destructive Raman spectroscopy as a tool for measuring ASTA color values and Sudan I content in paprika powder
Publication date: 15 February 2019Source: Food Chemistry, Volume 274Author(s): Olga Monago-Maraña, Carl Emil Eskildsen, Nils Kristian Afseth, Teresa Galeano-Díaz, Arsenio Muñoz de la Peña, Jens Petter WoldAbstractThe aim of this study was developing a non-destructive method for the determination of color in paprika powder as well as for detecting possible adulteration with Sudan I. Non-destructive Raman spectroscopy was applied directly to paprika powder employing a laser excitation of 785 nm for the first time. The fluorescence background was estimated, by fitting a polynomial to each spectru...
Source: Food Chemistry - September 2, 2018 Category: Food Science Source Type: research
Feeding activity of the cayenne pompano Trachinotus cayennensis (Cuvier 1832) (Perciformes, Carangidae) in estuaries on the western coast of the state of Maranh ão, Brazil.
Feeding activity of the cayenne pompano Trachinotus cayennensis (Cuvier 1832) (Perciformes, Carangidae) in estuaries on the western coast of the state of Maranhão, Brazil. Braz J Biol. 2018 Aug 20;: Authors: Castro ACL, Azevedo JWJ, Ferreira HRS, Soares LS, Pinheiro-Júnior JR, Smith LMR, Silva MHL Abstract The present paper addresses the feeding activity of Trachinotus cayennensis, collected in Lençóis Bay (1°18'S - 1°19'S; 44°51'W - 44°53'W) on the western coast of the state of Maranhão, Brazil. Sampling was conducted between June 2012 and June 2013 ...
Source: Braz J Biol - August 20, 2018 Category: Biology Authors: Castro ACL, Azevedo JWJ, Ferreira HRS, Soares LS, Pinheiro-Júnior JR, Smith LMR, Silva MHL Tags: Braz J Biol Source Type: research
Prevalence and risk factors of post chikungunya rheumatic musculoskeletal disorders: a prospective follow-up study in French Guiana
The objective of the study was to estimate the prevalence of chronic post-CHIKV rheumatic or musculoskeletal pain (pCHIK-RMSP) at 3 and 6 months after the initial symptoms. An observational study was conducted at Cayenne General Hospital in French Guiana between April 1 and June 30, 2014. All patients seen for CHIKV infection confirmed by RT-PCR were prospectively included. Pregnant women and children under 15 were excluded from the study. All patients were called by phone at 3 and 6 months to enquire about the presence of pCHIK-RMSP. Out of a total of 254 eligible patients, 168 were selected. The mean age was 4...
Source: European Journal of Clinical Microbiology and Infectious Diseases - August 17, 2018 Category: Microbiology Source Type: research
Probabilistic Risk Assessment of Inorganic Arsenic via Consumption of Herbs Collected in Thailand.
Authors: Monboonpitak N, Ruangwises S, Buranaphalin S, Ruangwises N Abstract Total and inorganic arsenic contents in ten commonly consumed Thai herbs, namely, bird's eye chili, cayenne pepper, celery, garlic, holy basil, kitchen mint, lemongrass, pepper, shallot, and sweet basil, were determined using atomic absorption spectrometry coupled with a hydride generation system (HG-AAS). Total arsenic contents in fresh herbs and lyophilized herbs ranged from 3.39 to 119 ng/g wet weight (wet wt) and from 41.0 to 156 ng/g dry weight (dry wt), respectively. Inorganic arsenic contents in fresh herbs and lyophilized herbs ran...
Source: Evidence-based Complementary and Alternative Medicine - August 16, 2018 Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Characterization and classification of Spanish paprika (Capsicum annuum L.) by liquid chromatography coupled to electrochemical detection with screen-printed carbon-based nanomaterials electrodes.
ez A, Ariño C, Díaz-Cruz JM Abstract Screen-printed electrodes based on graphite, carbon nanotubes, carbon nanofibers, and graphene were tested as amperometric detectors for the determination of phenolic compounds by high performance liquid chromatography (HPLC). The chromatographic performance as well as the obtained sensitivity, detection and quantification limits suggest that carbon nanofibers modified screen-printed electrode (SPCE-CNF) is the amperometric sensor that provides the best analytical performance. Upon this confirmation, chromatographic data obtained using SPCE-CNF were exploited by m...
Source: Talanta - August 10, 2018 Category: Chemistry Authors: Serrano N, Cetó X, Núñez O, Aragó M, Gámez A, Ariño C, Díaz-Cruz JM Tags: Talanta Source Type: research
Similarities and differences of the volatile profiles of six spices explored by Proton Transfer Reaction Mass Spectrometry
Publication date: 15 January 2019Source: Food Chemistry, Volume 271Author(s): I.C.J. Silvis, P.A. Luning, N. Klose, M. Jansen, S.M. van RuthAbstractAroma properties of spices are related to the volatile organic compounds (VOCs) present, which can provide distinct analytical signatures. The aim of the study was to examine similarity and diversity of VOC profiles of six common market spices (black/white pepper, chili paprika, cinnamon, nutmeg and saffron). The key volatiles were identified by PTR-TOFMS. Twelve samples per spice were subjected to PTR-Quadrupole MS (PTR-QMS) and Principal Component Analysis to compare the grou...
Source: Food Chemistry - August 1, 2018 Category: Food Science Source Type: research
Natural curing agents as nitrite alternatives and their effects on the physicochemical, microbiological properties and sensory evaluation of sausages during storage
This study investigated the effects of different curing agents on the physicochemical properties, microbiological properties and sensory evaluation of sausages formulated with and without nitrite over 4 weeks of cold storage. Seven batches were prepared: control, sodium nitrite 0.01%; celery powder 0.8% (T1); fruit extract powder 0.6% (T2); purple sweet potato powder 0.45% (T3); fruit and vegetable extract powders 0.5% (T4); gardenia red 0.04% (T5); paprika and blueberry powder 0.07% (T6). T1 produced significantly lighter, redder and yellower sausages compared to control and had a higher color intensity (C*) and hue (h)...
Source: Meat Science - July 27, 2018 Category: Food Science Source Type: research
Aspergillus terreus JF27 Promotes the Growth of Tomato Plants and Induces Resistance against Pseudomonas syringae pv. tomato.
Authors: Yoo SJ, Shin DJ, Won HY, Song J, Sang MK Abstract Certain beneficial microorganisms isolated from rhizosphere soil promote plant growth and induce resistance to a wide variety of plant pathogens. We obtained 49 fungal isolates from the rhizosphere soil of paprika plants, and selected 18 of these isolates that did not inhibit tomato seed germination for further investigation. Based on a seed germination assay, we selected four isolates for further plant tests. Treatment of seeds with isolate JF27 promoted plant growth in pot tests, and suppressed bacterial speck disease caused by Pseudomonas syringae pathov...
Source: Mycobiology - July 4, 2018 Category: Biology Tags: Mycobiology Source Type: research
Detection of tobamoviruses by RT-PCR using a novel pair of degenerate primers.
Abstract A generic RT-PCR assay was developed for the universal detection of viruses of the genus Tobamovirus using a novel pair of degenerate primers designed based on conserved regions on replicase genes of 32 tobamoviruses. The assay detected nine tobamoviruses, including six Solanaceae-infecting subgroup tobamoviruses of Tobacco mosaic virus (TMV), Tomato mosaic virus (ToMV), Tomato mottle mosaic virus (ToMMV), Tobacco mottle green mosaic virus (TMGMV), Pepper mild mottle virus (PMMoV), Paprika mild mottle virus (PaMMV), one Orchidaceae-infecting tobamovirus of Odontoglossum ringspot virus (ORSV) and two Cucur...
Source: Journal of Virological Methods - June 23, 2018 Category: Virology Authors: Li Y, Tan G, Lan P, Zhang A, Liu Y, Li R, Li F Tags: J Virol Methods Source Type: research
Sensitivity enhancement for mycotoxin determination by optical waveguide lightmode spectroscopy using gold nanoparticles of different size and origin
Publication date: 30 November 2018 Source:Food Chemistry, Volume 267 Author(s): Nóra Adányi, Ádám György Nagy, Bettina Takács, István Szendrő, George Szakacs, Rózsa Szűcs, Eszter Tóth-Szeles, István Lagzi, Diána Weiser, Viktória Bódai, Péter Sátorhelyi, Balázs Erdélyi Mycotoxins, present in a wide range of food and feed commodities, are toxic secondary metabolites produced by a number of different fungi. Certain mycotoxins do not readily degrade at high temperatures, therefore are resistant to food proces...
Source: Food Chemistry - June 20, 2018 Category: Food Science Source Type: research
Cross-reactivity by botanicals used in dietary supplements and spices using the multiplex xMAP food allergen detection assay (xMAP FADA).
Abstract Food allergies affect some 15 million Americans. The only treatment for food allergies is a strict avoidance diet. To help ensure the reliability of food labels, analytical methods are employed; the most common being enzyme-linked immunosorbent assays (ELISAs). However, the commonly employed ELISAs are single analyte-specific and cannot distinguish between false positives due to cross-reactive homologous proteins; making the method of questionable utility for regulatory purposes when analyzing for unknown or multiple food allergens. Also, should the need arise to detect additional analytes, extensive rese...
Source: Analytical and Bioanalytical Chemistry - June 18, 2018 Category: Chemistry Authors: Pedersen RO, Nowatzke WL, Cho CY, Oliver KG, Garber EAE Tags: Anal Bioanal Chem Source Type: research
The effect of common spices and meat type on the formation of heterocyclic amines and polycyclic aromatic hydrocarbons in deep-fried meatballs
In conclusion, antioxidant capacity of spices determined their efficiency in prohibiting formation of HCAs and PAHs, and meat type affected the formation of HCAs, but not PAHs. (Source: Food Control)
Source: Food Control - May 30, 2018 Category: Food Science Source Type: research
Preparation and characterization of casein-carrageenan conjugates and self-assembled microcapsules for encapsulation of red pigment from paprika
This study aimed to investigate the optimum preparation condition of casein- carrageenan conjugate by ultrasonic Maillard dry treatment. The stable microcapsule was self-assembly prepared by the conjugates applied to protect red pigment from paprika. The optimum substrate ratio of Cas-Ca is 1:2, the reaction time and temperature were 24 h and 60 °C. Finally, the optimal degree of grafting reached 78.05%. Conjugation with carrageenan could further enhance solubility and emulsifying properties of casein. Glycosylation self-assembly nanoparticles were prepared with ultrasonic treatment, and the stability of the nanopa...
Source: Carbohydrate Polymers - May 27, 2018 Category: Biomedical Science Source Type: research
Quantification of capsaicinoids in chillies by solid-phase extraction coupled with voltammetry
Publication date: 1 November 2018 Source:Food Chemistry, Volume 265 Author(s): Kwok Kiong Chan, Muhammad Shafique Bin Hamid, Richard D. Webster Capsaicinoids were extracted from a range of spices and chillies using methanol, prior to concentrating the compounds using solid-phase extraction cartridges and water/methanol (50:50% v/v) as the solvent, followed by elution with acetonitrile. The primary extraction procedure, involving only sonication of the spices in methanol, gave results comparable to a procedure that used a combination of sonication, stirring and centrifuging. The voltammetric quantification of the capsaicin...
Source: Food Chemistry - May 26, 2018 Category: Food Science Source Type: research
Establishing time stability for multivariate qualitative methods. Case study: Sudan I and IV adulteration in food spices
Publication date: October 2018 Source:Food Control, Volume 92 Author(s): Dainis N. Vera, Itziar Ruisánchez, M. Pilar Callao A multivariate qualitative method using UV-visible spectroscopic data and a PLS-DA chemometric treatment was proposed to identify whether paprika samples were adulterated with Sudan I and Sudan IV dyes, or their mixtures. The method was validated by calculating the main performance parameters (sensitivity and specificity) and determining the stability over time. Three classes were defined: unadulterated samples (class 1), samples adulterated with Sudan I (class 2) and samples adulterated with ...
Source: Food Control - May 18, 2018 Category: Food Science Source Type: research
Zika virus outbreak in Suriname, a report based on laboratory surveillance data
This article describes the laboratory based surveillance system in Suriname and the incidence of confirmed cases of ZIKV infection according to sex, age, and spatial and temporal distribution Methods General practitioners and public health centers located in different districts of Suriname were asked to send blood samples from suspicious cases to Academic Hospital for molecular diagnosis of Zika virus infection. In particular, in cases involving pregnant women, samples were screened for free upon request. Viral RNA was extracted from blood and urine samples using a RNeasy Mini Kit (Qiagen, Hilden, Germany). An in-house ...
Source: PLOS Currents Outbreaks - May 10, 2018 Category: Epidemiology Authors: Claude Flamand Source Type: research
Snakebites in French Guiana: Conclusions of an international symposium.
Conclusions of an international symposium. Toxicon. 2018 Apr 02;: Authors: Kallel H, Hommel D, Mehdaoui H, Megarbane B, Resiere D Abstract A workshop on epidemiology and management of snakebites in French Guiana was performed at Cayenne, French Guiana from September 15 to September 16, 2017, under the auspices of the French Regional Health Agency (ARS) and the Pan American Health Organization (PAHO). The activity was attended by experts from France (Angers, Martinique, French Guiana, Guadeloupe, and Paris), Costa Rica, Brazil, Saint Lucia, and Surinam. The epidemiology, clinical manifestations, clinic...
Source: Toxicon - April 2, 2018 Category: Toxicology Authors: Kallel H, Hommel D, Mehdaoui H, Megarbane B, Resiere D Tags: Toxicon Source Type: research
Non-targeted detection of paprika adulteration using mid-infrared spectroscopy and one-class classification – Is it data preprocessing that makes the performance?
Publication date: 15 August 2018 Source:Food Chemistry, Volume 257 Author(s): Bettina Horn, Susanne Esslinger, Michael Pfister, Carsten Fauhl-Hassek, Janet Riedl A method for the non-targeted detection of paprika adulteration was developed using Fourier transform mid-infrared (FT-MIR) spectroscopy and one-class soft independent modelling of class analogy (OCSIMCA). One-class models based on commercially available paprika powders were developed and optimised to provide >80% sensitivity by external validation. The performances of the established models for adulteration detection were tested by predicting spiked papri...
Source: Food Chemistry - March 9, 2018 Category: Food Science Source Type: research