Optimization of supercritical carbon dioxide extraction of sweet paprika (Capsicum annuum L.) using response surface methodology
Publication date: Available online 16 May 2020Source: Chemical Engineering Research and DesignAuthor(s): Dorota Kostrzewa, Agnieszka Dobrzyńska-Inger, August Turczyn (Source: Chemical Engineering Research and Design)
Source: Chemical Engineering Research and Design - May 17, 2020 Category: Chemistry Source Type: research
Dry Sterilization of Paprika (Capsicum annuum L.) by Short Time-Intensive Microwave-Infrared Radiation: Establishment of Process Using Glass Transition, Sorption, and Quality Degradation Kinetic Parameters
Publication date: June 2020Source: Innovative Food Science & Emerging Technologies, Volume 62Author(s): S.S. Shirkole, R. Jayabalan, P.P. Sutar (Source: Innovative Food Science and Emerging Technologies)
Source: Innovative Food Science and Emerging Technologies - May 13, 2020 Category: Food Science Source Type: research
Epidemiology and Prognosis of Intensive Care Unit-Acquired Bloodstream Infection.
Abstract Intensive care unit-acquired bloodstream infections (ICU-BSI) are frequent and are associated with high morbidity and mortality rates. We conducted this study to describe the epidemiology and the prognosis of ICU-BSI in our ICU and to search for factors associated with mortality at 28 days. For this, we retrospectively studied ICU-BSI in the ICU of the Cayenne General Hospital, from January 2013 to June 2019. Intensive care unit-acquired bloodstream infections were diagnosed in 9.5% of admissions (10.3 ICU-BSI/1,000 days). The median delay to the first ICU-BSI was 9 days. The ICU-BSI was primitive in 44% ...
Source: The American Journal of Tropical Medicine and Hygiene - April 20, 2020 Category: Tropical Medicine Authors: Kallel H, Houcke S, Resiere D, Roy M, Mayence C, Mathien C, Mootien J, Demar M, Hommel D, Djossou F Tags: Am J Trop Med Hyg Source Type: research
Molecules, Vol. 25, Pages 1623: Targeted UHPLC –HRMS (Orbitrap) Polyphenolic and Capsaicinoid Profiling for the Chemometric Characterization and Classification of Paprika with Protected Designation of Origin (PDO) Attributes
Molecules, Vol. 25, Pages 1623: Targeted UHPLC–HRMS (Orbitrap) Polyphenolic and Capsaicinoid Profiling for the Chemometric Characterization and Classification of Paprika with Protected Designation of Origin (PDO) Attributes Molecules doi: 10.3390/molecules25071623 Authors: Sergio Barbosa Javier Saurina Lluís Puignou Oscar Núñez Society&rsquo;s interest in the quality of food products with certain attributes has increased, the attribute of a Protected Designation of Origin (PDO) being an effective tool to guarantee the quality and geographical origin of a given food product. ...
Source: Molecules - April 1, 2020 Category: Chemistry Authors: Sergio Barbosa Javier Saurina Llu ís Puignou Oscar N úñez Tags: Article Source Type: research
Dry sterilization of paprika (Capsicum annuum L.) by short time intensive microwave-infrared radiation: Establishment of process using glass transition, sorption, and quality degradation kinetic parameters
Publication date: Available online 25 March 2020Source: Innovative Food Science & Emerging TechnologiesAuthor(s): S.S. Shirkole, R. Jayabalan, P.P. Sutar (Source: Innovative Food Science and Emerging Technologies)
Source: Innovative Food Science and Emerging Technologies - March 26, 2020 Category: Food Science Source Type: research
ZIKA Virus infection in pregnant women in French Guiana: More precarious-more at risk
The objective of the present study was to test the hypothesis that Zika virus (ZIKV) infection was more frequent in precarious pregnant women than in non-precarious pregnant women, as reflected by their health insurance status. MethodsA multicentric cross-sectional study was conducted in Cayenne hospital including ZIKV pregnant women with serological or molecular proof of ZIKV during their pregnancy between January and December 2016. Health insurance information was recorded at delivery, which allowed separating women in: undocumented foreigners, precarious but with residence permit, and non-precarious. ResultsA total of 6...
Source: PLoS Neglected Tropical Diseases - March 24, 2020 Category: Tropical Medicine Authors: Edouard Hallet Source Type: research
American Cutaneous Leishmaniasis in French Guiana: a retrospective comparison between liposomal amphotericin B and meglumine antimoniate.
zot R Abstract New World cutaneous leishmaniasis (CL) is endemic in many countries of Latin America, including French Guiana 1 . While pentamidine is the first-line treatment against Leishmania guyanensis in this territory 2 , pentavalent antimonials such as meglumine antimoniate (MA) are recommended in case of L. braziliensis or pentamidine-resistant strains of other species 2 . Liposomal amphotericin B (L-AmB) (Ambisome ®) is widely used against fungi and visceral leishmaniasis 3 . However, data concerning its efficacy in New World CL are scarce and contradictory 4-7 . Due to a shortage in MA, the Cayenne Ho...
Source: The British Journal of Dermatology - February 20, 2020 Category: Dermatology Authors: Senchyna A, Simon S, Cissé H, Ginouves M, Prevot G, Alcoba G, Demar M, Couppie P, Blaizot R Tags: Br J Dermatol Source Type: research
Authentication of paprika using HPLC-UV fingerprints
Publication date: Available online 13 February 2020Source: LWTAuthor(s): Xavier Cetó, Cristina Sánchez, Núria Serrano, José Manuel Díaz Cruz, Oscar NúñezAbstractIn this work we combine simple extraction and HPLC-UV methodologies with chemometric pattern-recognition strategies in order to obtain characteristic fingerprints of phenolic compounds that allow the authentication of paprika samples. To illustrate the potential of the proposed approach, two different adulteration scenarios were considered, namely adulteration of paprika based on its type (sweet, bittersweet and spic...
Source: LWT Food Science and Technology - February 14, 2020 Category: Food Science Source Type: research
[The interplay between isolation and precariousness, and hospitalization duration in French Guiana].
CONCLUSION: The results show the nonlinear relationship between the IP-DMS and geographical isolation, poverty, and their interaction. These contextual variables must be taken into account when choosing the target IP-DMS value for French Guiana, which conditions funding and number of hospital beds allowed in a context of rapid demographic growth. PMID: 32035728 [PubMed - as supplied by publisher] (Source: Revue d Epidemiologie et de Sante Publique)
Source: Revue d Epidemiologie et de Sante Publique - February 11, 2020 Category: Epidemiology Tags: Rev Epidemiol Sante Publique Source Type: research
Detection of irradiated components in mixtures of herbs and spices by thermoluminescence
Publication date: Available online 29 January 2020Source: Radiation Physics and ChemistryAuthor(s): Ivana Sandeva, Hristina Spasevska, Margarita Ginovska, Lihnida Stojanovska-GeorgievskaAbstractTreatment of food with ionizing radiation is used for reducing the number of harmful microorganisms and toxins, delaying ripening and preventing sprouting. A number of methods have been developed for detection of irradiated food. Photostimulated luminescence and thermoluminescence are physical methods for detection of irradiated food containing silicate minerals.Measurements for this study are done by photostimulated luminescence an...
Source: Radiation Physics and Chemistry - January 30, 2020 Category: Physics Source Type: research
NIR spectroscopy-multivariate analysis for rapid authentication, detection and quantification of common plant adulterants in saffron (Crocus sativus L.) stigmas
Publication date: Available online 7 January 2020Source: LWTAuthor(s): Eman Shawky, Rasha A. Abu El-Khair, Dina A. SelimAbstractThe presented work discusses the development of a rapid and precise analytical protocol using near infrared spectroscopy combined with multivariate data analysis to authenticate, detect and quantify most of the commonly encountered plant adulterants used in fraud of saffron stigmas including safflower, pomegranate fruit peel, calendula flower, paprika, curcuma, hibiscus, saffron stamens and exhaustively-extracted saffron stigmas. A Soft Independent Modelling of Class Analogies (SIMCA) model was co...
Source: LWT Food Science and Technology - January 8, 2020 Category: Food Science Source Type: research
[ASAP] Determination of Phenolic Compounds in Paprika by Ultrahigh Performance Liquid Chromatography –Tandem Mass Spectrometry: Application to Product Designation of Origin Authentication by Chemometrics
Journal of Agricultural and Food ChemistryDOI: 10.1021/acs.jafc.9b06054 (Source: Journal of Agricultural and Food Chemistry)
Source: Journal of Agricultural and Food Chemistry - January 6, 2020 Category: Food Science Authors: Sergio Barbosa †#, Guillem Campmajo´†‡#, Javier Saurina†‡, Lluis Puignou†‡, and Oscar Nu´n~ez*†‡ Source Type: research
Portable Near-Infrared spectroscopy for rapid authentication of adulterated paprika powder
In conclusion, results showed that NIR spectroscopy is a useful screening technique for identification and quantification of adulteration in paprika. (Source: Journal of Food Composition and Analysis)
Source: Journal of Food Composition and Analysis - January 4, 2020 Category: Food Science Source Type: research
Non on-destructive fluorescence spectroscopy combined with second-order calibration as a new strategy for the analysis of the illegal Sudan I dye in paprika powder
Publication date: May 2020Source: Microchemical Journal, Volume 154Author(s): Olga Monago-Maraña, Carl Emil Eskildsen, Arsenio Muñoz de la Peña, Teresa Galeano-Díaz, Jens Petter WoldAbstractThis paper presents a novel strategy for determination of the illegal dye Sudan I in paprika powder. The method is based on fluorescence spectroscopy combined with second-order calibration, which was employed for the first time for this purpose. The method is non-destructive and requires no sample preparation. It was probed that Sudan I exhibited fluorescence; however, the color of paprika samples affected th...
Source: Microchemical Journal - December 29, 2019 Category: Chemistry Source Type: research
A new tool for creating personal and social EQ-5D-5L value sets, including valuing ‘dead’
Publication date: Available online 30 November 2019Source: Social Science & MedicineAuthor(s): Trudy Sullivan, Paul Hansen, Franz Ombler, Sarah Derrett, Nancy DevlinAbstractThe EuroQol Group's health descriptive systems, the EQ-5D-3L and its successor introduced in 2009, the EQ-5D-5L, are widely used worldwide for valuing health-related quality of life for cost-utility analysis and patient-reported health outcome measures. A new online tool for creating personal and social EQ-5D-5L value sets was recently developed and trialled in New Zealand (NZ). The tool, which includes extensive checks of the quality of participant...
Source: Social Science and Medicine - December 1, 2019 Category: Psychiatry & Psychology Source Type: research
Combined statistical physics models and DFT theory to study the adsorption process of paprika dye On TiO2 for dye sensitized solar cells
This study reported the combination of advanced statistical physics modeling and density functional theory (DFT) investigation for the interpretation of the adsorption of Paprika dye on TiO2 surface for dye sensitized solar cells. By using a statistical physics modeling method, an adequate monolayer model with four energies was successfully used to interpret the adsorption process at a macroscopic level. The DFT simulation has been used to study the interaction of the Paprika dye on TiO2 surface to understand some of the atomistic details that are crucial to the dye/semiconductor interaction. We pay particular attention to...
Source: Journal of Materials Research and Technology - December 1, 2019 Category: Materials Science Source Type: research
Discriminating Tonate Virus from Dengue Virus Infection: A Matched Case-Control Study in French Guiana, 2003-2016.
The objectives of the present study were to describe the clinical picture of TONV and to compare its presentation with that of dengue virus (DENV). A retrospective study was performed in Cayenne hospital from 2003 to 2016 including all patients exclusively positive for TONV IgM and not for other alphaviruses. They were classified as high probability: typical clinical picture of arbovirus infection (i.e., fever, chills, headaches, muscle, and joint pains) and IgM seroconversion; medium probability: typical clinical picture + single positive IgM on a unique serum sample without control; and low probability: atypical clinical...
Source: The American Journal of Tropical Medicine and Hygiene - November 25, 2019 Category: Tropical Medicine Authors: Mutricy R, Djossou F, Matheus S, Lorenzi-Martinez E, De Laval F, Demar M, Nacher M, Rousset D, Epelboin L Tags: Am J Trop Med Hyg Source Type: research
Plant derived ingredients rich in nitrates or phenolics for protection of pork against protein oxidation
Publication date: Available online 21 November 2019Source: Food Research InternationalAuthor(s): Lorena Martínez, Sisse Jongberg, Gaspar Ros, Leif H. Skibsted, Gema NietoAbstractA pork model system containg phenolic extracts (citrus, rosemary, and acerola), traditional Spanish food ingredients (paprika, garlic, and oregano), or natural nitrate sources (beet, lettuce, arugula, spinach, chard, celery, and watercress) were oxidized by an hydrophilic (OXHydro, 2,2’-azobis(2-amidinopropane)-dihydrochloride; AAPH) or lipophilic (OXLip, 2,2’-azobis(2,4-dimethylvaleronitrile; AMVN) radical initiator. Citrus as w...
Source: Food Research International - November 22, 2019 Category: Food Science Source Type: research
Discrete choice experiments identifying attributes influencing treatment preference in mild asthma
Conclusions: In these DCEs, participant’s preferences were influenced by several attributes in addition to as-needed versus regular treatment. The relative importance of such attributes should be considered during shared decision-making with patients. (Source: European Respiratory Journal)
Source: European Respiratory Journal - November 21, 2019 Category: Respiratory Medicine Authors: Baggott, C., Hardy, J., Reddel, H., Sparks, J., Sabbagh, D., Mane, S., Holliday, M., Hancox, R. J., Hansen, P., Beasley, R., Fingleton, J. Tags: Airway pharmacology and treatment Source Type: research
Molecules, Vol. 24, Pages 4174: Experimental Data and Modelling of the Solubility of High-Carotenoid Paprika Extract in Supercritical Carbon Dioxide
czyn The studies of solubility of the paprika extract with a high concentration of carotenoids in carbon dioxide under the pressure of 20&ndash;50 MPa and at temperatures of 313.15&ndash;333.15 K were carried out using the static method. The highest solubility of paprika extract was achieved at the temperature of 333.15 K and under the pressure of 50 MPa. The obtained experimental data were correlated with five density-based models, applied for prediction of solubility in the supercritical carbon dioxide (the Chrastil, del Valle and Aguilera, Adachi and Lu, Sparks et al. and Bian et al. models). The acc...
Source: Molecules - November 18, 2019 Category: Chemistry Authors: Dorota Kostrzewa Agnieszka Dobrzy ńska-Inger August Turczyn Tags: Article Source Type: research
Pathway engineering for efficient biosynthesis of violaxanthin in Escherichia coli.
Abstract Carotenoids are naturally synthesized in some species of bacteria, archaea, and fungi (including yeasts) as well as all photosynthetic organisms. Escherichia coli has been the most popular bacterial host for the heterologous production of a variety of carotenoids, including even xanthophylls unique to photosynthetic eukaryotes such as lutein, antheraxanthin, and violaxanthin. However, conversion efficiency of these epoxy-xanthophylls (antheraxanthin and violaxanthin) from zeaxanthin remained substantially low. We here examined several factors affecting their productivity in E. coli. Two sorts of plasmids ...
Source: Applied Microbiology and Biotechnology - October 31, 2019 Category: Microbiology Authors: Takemura M, Kubo A, Higuchi Y, Maoka T, Sahara T, Yaoi K, Ohdan K, Umeno D, Misawa N Tags: Appl Microbiol Biotechnol Source Type: research
In vitro and In vivo antioxidant properties of paprika carotenoids nanoemulsions
This study aimed to investigate the protective role of emulsions loaded with paprika oleoresin carotenoids on liver and serum of healthy rats. Additionally, the study explored the effects of nonionic surfactants on the liver, which have not been reported. Conventional (CE) and nano (NE) emulsions were prepared and characterized, showing particle size of 157.9 and 39.2 nm, respectively and a monodisperse-size distribution. Carotenoid concentration analyzed by the DPPH method (EC50) were 347 and 359 μg/mL for CE and NE, respectively. Both emulsions and the surfactant alone (Tween 40) were orally administered to Wistar...
Source: LWT Food Science and Technology - October 10, 2019 Category: Food Science Source Type: research
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