Biocatalysis of aromatic benzyl-propionate ester by different immobilized lipases.
Abstract
Benzyl propionate is an aromatic ester that possesses a fruity odor and is usually found in nature in the composition of some fruits such as plums and melons. This work aimed for the benzyl propionate synthesis by esterification using a new immobilized enzyme preparation with low-cost material from Candida antarctica (NS 88011) and three commercial immobilized lipases (Novozym 435, Lipozyme TL-IM and Lipozyme RM-IM). Novozym 435 had the best performance even when the solvent tert-butanol was absent of the reaction medium. Results from a 22 factorial design showed that an increase in the enzyme amo...
Source: Bioprocess and Biosystems Engineering - January 19, 2018 Category: Biomedical Engineering Authors: Sá AGA, de Meneses AC, Lerin LA, de Araújo PHH, Sayer C, de Oliveira D Tags: Bioprocess Biosyst Eng Source Type: research
Oral allergy syndrome.
CONCLUSION: Patients with grass allergy may have a response to peaches, oranges, celery, tomatoes, and melons. Patients with ragweed allergy may show OAS symptoms with melon, cucumber, banana, and zucchini. Physicians should be aware of OAS and know the appropriate treatment.
PMID: 29336286 [PubMed - in process] (Source: American Journal of Rhinology and Allergy)
Source: American Journal of Rhinology and Allergy - January 1, 2018 Category: ENT & OMF Authors: Muluk NB, Cingi C Tags: Am J Rhinol Allergy Source Type: research
UA Project Tackles Challenge of Making Safer Melons
With funding from the Department of Agriculture, researchers will develop new disinfectants, grow new breeds of melons, and educate farmers, retailers and consumers on safe practices. (Source: The University of Arizona: Health)
Source: The University of Arizona: Health - December 11, 2017 Category: Universities & Medical Training Authors: Emily Walla, NASA Space Grant Intern, University Communications Source Type: research
Enhancing the immunofluorescent sensitivity for detection of Acidovorax citrulli using fluorescein isothiocyanate labeled antigen and antibody.
Abstract
A rapid lateral flow immunochromatographic strip (ICS) using fluorescein isothiocyanate (FITC) labeled antigen and antibody was developed for the detection of Acidovorax citrulli (Ac) in melons and vegetable samples. In the ICS, signal amplification was realized based on antigen Ac and anti-Ac monoclonal antibody (McAb) 4F conjugated with FITC, respectively, which were forming two probes. The control line and the test line were obtained by immobilizing the goat anti-mouse IgG antibody and anti-Ac McAb 6D on both sides of the nitrocellulose membrane. The visual detection limit of the strip was 10(5...
Source: Analytical and Bioanalytical Chemistry - October 30, 2017 Category: Chemistry Authors: Zeng H, Zhang D, Zhai X, Wang S, Liu Q Tags: Anal Bioanal Chem Source Type: research
Assessment and review of organochlorine pesticide pollution in Kyrgyzstan.
Abstract
The current study describes the preliminary assessment and securing activities of the largest and most hazardous POPs-contaminated sites in Kyrgyzstan. In 2010, cattle died and population were found with high pesticide levels in blood, human milk, and placenta. In the first phase of the study, a historic assessment of the pesticide dumping at the landfill/dump sites have been conducted. In the second phase, soil analysis for organochlorine pesticides in the areas of the pesticide disposal sites, the former pesticides storehouses, agro-air strips, and the cotton-growing fields were conducted. By th...
Source: Environmental Science and Pollution Research International - September 6, 2017 Category: Environmental Health Authors: Toichuev RM, Zhilova LV, Makambaeva GB, Payzildaev TR, Pronk W, Bouwknegt M, Weber R Tags: Environ Sci Pollut Res Int Source Type: research
Brazilian melon landraces resistant to Podosphaera xanthii are unique germplasm resources
Podosphaera xanthii is the most important causal agent of powdery mildew in melon, a crop ranked within the most economically important species worldwide. The best strategy to face this fungus disease, which causes important production losses, is the development of genetically resistant cultivars. Genetic breeding programmes require sources of resistance, and a few ones have been reported in melon, mostly in Momordica and Acidulus horticultural groups. However, the existence of many races that reduces the durability of the resistance makes necessary to find new resistant genotypes with different genetic backgrounds.
In thi...
Source: Annals of Applied Biology - June 30, 2017 Category: Biology Authors: E.W.L.P. Nunes, C. Esteras, A.O. Ricarte, E.M. Mart ínez, M.L. Gómez‐Guillamón, G.H.S. Nunes, M.B. Picó Tags: RESEARCH ARTICLE Source Type: research
Quantitative trait loci analysis of melon (Cucumis melo L.) domestication-related traits.
Abstract
KEY MESSAGE: Loci on LGIV, VI, and VIII of melon genome are involved in the control of fruit domestication-related traits and they are candidate to have played a role in the domestication of the crop. The fruit of wild melons is very small (20-50 g) without edible pulp, contrasting with the large size and high pulp content of cultivated melon fruits. An analysis of quantitative trait loci (QTL) controlling fruit morphology domestication-related traits was carried out using an in vitro maintained F2 population from the cross between the Indian wild melon "Trigonus" and the western elite cultivar '...
Source: TAG. Theoretical and Applied Genetics - June 5, 2017 Category: Genetics & Stem Cells Authors: Díaz A, Martín-Hernández AM, Dolcet-Sanjuan R, Garcés-Claver A, Álvarez JM, Garcia-Mas J, Picó B, Monforte AJ Tags: Theor Appl Genet Source Type: research
Appearance and overall acceptability of fresh-cut cantaloupe pieces from whole melon treated with wet steam process
Publication date: 1 September 2017 Source:LWT - Food Science and Technology, Volume 82 Author(s): Dike O. Ukuku, David J. Geveke, Lee Chau, Andrew Bigley, Brendan A. Niemira Minimally processed fresh-cut fruits have a limited shelf-life because of deterioration caused by spoilage microflora and changes in physiological processes. Whole melons was inoculated with 107 CFU/ml of Salmonella, Escherichia coli O157:H7 and Listeria monocytogenes to achieve 4.8, 4.5 and 4.1 log CFU/cm2, respectively on melon surfaces. The inoculated melons were treated with a wet steam processing unit for 180 s before fresh-cut preparatio...
Source: LWT Food Science and Technology - April 22, 2017 Category: Food Science Source Type: research
How Bacteria-Laden Poop Is Killing American Squash and Melons
A deadly microscopic foe is giving the gourds“heart failures”
-- Read more on ScientificAmerican.com (Source: Scientific American)
Source: Scientific American - April 18, 2017 Category: Science Authors: Dina Fine Maron Tags: Sustainability The Sciences Biology Source Type: research
Enhanced production of 3-methylthiopropionic ethyl ester in native Iranian Cucumis melo L. Group dudaim under regulated deficit irrigation
Publication date: March 2017 Source:Journal of Functional Foods, Volume 30 Author(s): Najmeh Zeinalipour, Kamahldin Haghbeen, Iraj Tavassolian, Ali Asghar Karkhane, Jaleh Ghashghaie Sulfur esters such as 3-methylthiopropionic ethyl ester (MTPE) significantly influence taste and fragrance of melons. Nutraceutical properties of MTPE have been demonstrated. GC–Mass analysis confirmed MTPE presence in two Cucumis melo L. Group dudaim cultivars of Iran, Birjand and Kerman. Considering potential effect of abiotic stresses on biosynthesis of esters, both cultivars were subjected to regulated deficit irrigation (RDI) at t...
Source: Journal of Functional Foods - January 10, 2017 Category: Nutrition Source Type: research
A review of Listeria monocytogenes: An update on outbreaks, virulence, dose-response, ecology, and risk assessments
Publication date: May 2017 Source:Food Control, Volume 75 Author(s): Robert L. Buchanan, Leon G.M. Gorris, Melinda M. Hayman, Timothy C. Jackson, Richard C. Whiting Improved control measures starting in the 1990s have greatly reduced the prevalence of L. monocytogenes in many food categories, particularly in meats and meat products. However, the rate of listeriosis has remained constant during the last decade and the more severe, systemic (invasive) form of listeriosis is now recognized as occurring more frequently in small outbreaks than previously recognized. This review addresses the recent advances in epidemiol...
Source: Food Control - December 19, 2016 Category: Food Science Source Type: research
Modeling the fate of Listeria monocytogenes and Salmonella enterica in the pulp and on the outer rind of Canary melons (Cucumis melo (Indorus Group))
This study adds quantitative data to the literature on the fate of L. monocytogenes and S. enterica in Canary melons and reveal that pulp and the outer rind of this fruit comprise substrates that support the growth of both pathogens in a wide range of storage temperature. (Source: LWT Food Science and Technology)
Source: LWT Food Science and Technology - November 30, 2016 Category: Food Science Source Type: research
The Effects of Produce Washes on the Quality and Shelf Life of “Cantaloupe” (Cucumis Melo var. Cantalupensis) and “Watermelon” (Citrullus Lantus var. Lanatus)
Abstract
Our research objective was to evaluate the ability of produce washes to maintain the texture and color quality attributes of watermelon and cantaloupe while reducing the levels of natural fungi population on the melon surface. Melons were submerged for 2 min into either water control or water containing quaternary ammonium chloride (300 ppm) or an 18% hydrogen peroxide and 12% peroxyacetic acid combination (100 ppm), or an acetic acid, peroxyacetic acid and hydrogen peroxide combination (0.78%). Microbial analysis and instrumental measurements were utilized to assess the melons on day 0, 7, 14 and 21 in three sepa...
Source: Journal of Food Quality - September 30, 2016 Category: Food Science Authors: Amanda Svoboda, Angela Shaw, Lester Wilson, Aubrey Mendonca, Ajay Nair, Aura Daraba Tags: Original Article Source Type: research
Optimization of Vacuum Impregnation with Calcium Lactate of Minimally Processed Melon and Shelf ‐Life Study in Real Storage Conditions
The objective of this research was to investigate the impact on VI treatment with the addition of calcium lactate on qualitative parameters of minimally processed melon during storage. For this aim, this work was divided in 2 parts. Initially, the optimization of process parameters was carried out in order to choose the optimal VI conditions for improving texture characteristics of minimally processed melon that were then used to impregnate melons for a shelf‐life study in real storage conditions. On the basis of a 23 factorial design, the effect of Calcium lactate (CaLac) concentration between 0% and 5% and of minimum p...
Source: Journal of Food Science - September 30, 2016 Category: Food Science Authors: Silvia Tappi, Urszula Tylewicz, Santina Romani, Lorenzo Siroli, Francesca Patrignani, Marco Dalla Rosa, Pietro Rocculi Tags: E: Food Engineering & Materials Science Source Type: research
Evaluation of physicochemical/microbial properties and life cycle assessment (LCA) of PLA-based nanocomposite active packaging
Publication date: January 2017 Source:LWT - Food Science and Technology, Volume 75 Author(s): Gabriela S. Lorite, João M. Rocha, Noora Miilumäki, Paula Saavalainen, Tuula Selkälä, Gabriel Morales-Cid, M.P. Gonçalves, Eva Pongrácz, Cristina M.R. Rocha, Geza Toth To attend the growing consumer demand for novel ready-to-eat fresh cut fruits packaging polylactic acid (PLA)-based active packaging was realized. The aim of these packaging is to provide an improved protection and even to extend their shelf-life. PLA-based active packaging was prepared by adding nanoclays and surfactants in its formulation. The ev...
Source: LWT Food Science and Technology - September 13, 2016 Category: Food Science Source Type: research
