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https://www.readbyqxmd.com/read/28231564/mating-of-2-laboratory-saccharomyces-cerevisiae-strains-resulted-in-enhanced-production-of-2-phenylethanol-by-biotransformation-of-l-phenylalanine
#1
Jolanta Mierzejewska, Aleksandra Tymoszewska, Karolina Chreptowicz, Kamil Krol
2-Phenylethanol (2-PE) is an aromatic alcohol with a rosy scent which is widely used in the food, fragrance, and cosmetic industries. Promising sources of natural 2-PE are microorganisms, especially yeasts, which can produce 2-PE by biosynthesis and biotransformation. Thus, the first challenging goal in the development of biotechnological production of 2-PE is searching for highly productive yeast strains. In the present work, 5 laboratory Saccharomyces cerevisiae strains were tested for the production of 2-PE...
February 24, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28231166/production-and-properties-of-a-thermostable-ph-stable-exo-polygalacturonase-using-aureobasidium-pullulans-isolated-from-saharan-soil-of-algeria-grown-on-tomato-pomace
#2
Leila Bennamoun, Serge Hiligsmann, Scheherazad Dakhmouche, Amel Ait-Kaki, Fatima-Zohra Kenza Labbani, Tahar Nouadri, Zahia Meraihi, Benedetta Turchetti, Pietro Buzzini, Philippe Thonart
Polygalacturonase is a valuable biocatalyst for several industrial applications. Production of polygalacturonase using the Aureobasidium pullulans stain isolated from Saharan soil of Algeria was investigated. Its capacity to produce polygalacturonase was assessed under submerged culture using tomato pomace as an abundant agro-industrial substrate. Optimization of the medium components, which enhance polygalacturonase activity of the strain Aureobasidium pullulans, was achieved with the aid of response surface methodology...
October 29, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231148/potential-use-of-gamma-irradiated-ethnic-ready-to-eat-foods-to-improve-the-nutritional-status-of-landslide-victims
#3
REVIEW
Zubaidah Irawati Koenari, Carmen M Siagian, Bona Simanungkalit, Asti Nilatany, Indra Mustika Pratama, Deudeu Lasmawati, Cecep M Nurcahya
The safety and high quality of ethnic ready-to-eat foods as a source of nourishment and food supplies chain to the remote areas become particularly important. Consuming healthy and balanced nutritional foods means eating better quality foods in proper quantities. Such foods can be developed through a preservation technique by using ionizing radiation. Although implementation of the technology for certain foodstuffs has been implemented in some countries, application of the process to a complete set of meals for selected target groups is still very limited...
July 26, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230802/comparative-transcriptome-analysis-of-penicillium-citrinum-cultured-with-different-carbon-sources-identifies-genes-involved-in-citrinin-biosynthesis
#4
Taotao Li, Guoxiang Jiang, Hongxia Qu, Yong Wang, Yehui Xiong, Qijie Jian, Yu Wu, Xuewu Duan, Xiangrong Zhu, Wenzhong Hu, Jiasheng Wang, Liang Gong, Yueming Jiang
Citrinin is a toxic secondary metabolite of Penicillium citrinum and its contamination in many food items has been widely reported. However, research on the citrinin biosynthesis pathway and its regulation mechanism in P. citrinum is rarely reported. In this study, we investigated the effect of different carbon sources on citrinin production by P. citrinum and used transcriptome analysis to study the underlying molecular mechanism. Our results indicated that glucose, used as the sole carbon source, could significantly promote citrinin production by P...
February 21, 2017: Toxins
https://www.readbyqxmd.com/read/28226540/micro-tube-mass-production-device-for-microbial-culture
#5
K Fujimoto, M Ogawa, K Higashi, N Miki, K Fujimoto, M Ogawa, K Higashi, N Miki, K Higashi, K Fujimoto, M Ogawa, N Miki
This paper describes mass production system of micro-tubes for microbial culture in an open environment. Microbes are used in many fields, such as food, medicine, environmental and energy. We proposed a microbe culture system using hydrogel micro-tubes, which can protect the target microbes inside from competitive microbes outside of the tubes while allow oxygen and nutrition to diffuse through. The hydrogel micro-tubes can be produced by a microfluidic device, which can precisely control the flow and therefore, the tube geometry...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226303/got-yoga-a-longitudinal-analysis-of-thematic-content-and-models-appearance-related-attributes-in-advertisements-spanning-four-decades-of-yoga-journal
#6
Erin Vinoski, Jennifer B Webb, Jan Warren-Findlow, Kirstyn A Brewer, Katheryn A Kiffmeyer
Yoga has become an increasingly common health practice among U.S. adults over the past decade. With this growth in popularity, yoga-related print media have been criticized for shifting away from yoga's traditional philosophies and promoting a thin, lean ideal physique representing the "yoga body." The purpose of this study was to (a) analyze the presence and content of advertisements over the 40-year publication history of Yoga Journal magazine and (b) explore female advertisement models' socio-demographic and appearance-related attributes over time...
February 16, 2017: Body Image
https://www.readbyqxmd.com/read/28225201/edible-insects-in-china-utilization-and-prospects
#7
REVIEW
Ying Feng, Xiao-Ming Chen, Min Zhao, Zhao He, Long Sun, Cheng-Ye Wang, Wei-Feng Ding
The use of edible insects has a long history in China, where they have been consumed for more than two thousand years. In general, the level of acceptance is high for the consumption of insects in China. Many studies on edible insects have been conducted in the last twenty years, and the scope of the research includes the culture of entomophagy and the identification, nutritional value, farming and breeding of edible insects, in addition to food production and safety. Currently, 324 species of insects from 11 orders are documented that are either edible or associated with entomophagy in China, which include the common edible species, some less commonly consumed species, and some medicinal insects...
February 22, 2017: Insect Science
https://www.readbyqxmd.com/read/28223974/determination-of-antibacterial-and-technological-properties-of-vaginal-lactobacilli-for-their-potential-application-in-dairy-products
#8
Lorenzo Siroli, Francesca Patrignani, Diana I Serrazanetti, Carola Parolin, Rogers A Ñahui Palomino, Beatrice Vitali, Rosalba Lanciotti
Functional foods could differently affect human health in relation to the gender. Recent studies have highlighted the anti-Candida and anti-Chlamydia activities of some Lactobacillus strains isolated from the vagina of healthy women. Considering these important beneficial activities on women's health, the preparation of functional food containing active vaginal lactobacilli can represent a great scientific challenge for the female gender. In this context, the aim of this work was to study some functional and technological properties of 17 vaginal strains belonging to the species Lactobacillus crispatus, Lactobacillus gasseri, and Lactobacillus vaginalis in the perspective to include them in dairy products...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28223906/probiotics-and-disease-a-comprehensive-summary-part-3-cardiometabolic-disease-and-fatigue-syndromes
#9
REVIEW
Christy B Williamson, Cathleen M Burns, Crystal M Gossard, Jessica M Pizano, Keren E Dolan, Heather J Finley, Margaret G Gasta, Emily C Parker, Elizabeth A Lipski
This article series provides a literature review of the disease-specific probiotic strains, associated with cardiometabolic diseases and fatigue syndromes, studied in published clinical trials in humans and animals. This is not an exhaustive review. The table design allows for quick access to supportive data and will be helpful as a guide for both researchers and clinicians. The goal of the probiotics and disease series is to provide clinically useful tools. The first article (part 1) focused on mental health and neurological conditions and the second article (part 2) explored cultured and fermented foods that are commonly available in the United States...
February 2017: Integrative Medicine
https://www.readbyqxmd.com/read/28223894/probiotics-and-disease-a-comprehensive-summary-part-2-commercially-produced-cultured-and-fermented-foods-commonly-available-in-the-united-states
#10
REVIEW
Emily C Parker, Crystal M Gossard, Keren E Dolan, Heather J Finley, Cathleen M Burns, Margaret G Gasta, Jessica M Pizano, Christy B Williamson, Elizabeth A Lipski
This article series provides a literature review of the disease-specific probiotic strains studied in published clinical trials in humans and animals. The goal of the series is to provide clinically useful tools. The table design allows for quick access to supportive data and will be helpful as a guide for both researchers and clinicians. The first article (part 1) focused on mental health and neurological conditions. This second article (part 2) explores cultured and fermented foods that are commonly available in the United States...
December 2016: Integrative Medicine
https://www.readbyqxmd.com/read/28222809/indigenous-knowledge-and-use-of-lichens-by-the-lichenophilic-communities-of-the-nepal-himalaya
#11
Shiva Devkota, Ram Prasad Chaudhary, Silke Werth, Christoph Scheidegger
BACKGROUND: The aim of the study was to document the prevailing indigenous knowledge and various uses of lichens among the lichenophilic communities in the hills and mountainous settlements of Nepal. METHODS: Ethnic uses were recorded during twelve field trips, each of roughly 15 days in three consecutive years, through direct questionnaires administered to 190 respondents. Lichen samples were identified applying microscopic observation and thin layer chromatography (TLC)...
February 21, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28222167/emergence-and-development-of-gut-motility-in-the-chicken-embryo
#12
N R Chevalier, V Fleury, S Dufour, V Proux-Gillardeaux, A Asnacios
The gastrointestinal tract transports the food bolus by peristalsis. Gut motility starts at an early age in the developing embryo, well before it is required for nutrition of the organism. We present a comprehensive kinematic study of the emergence and physiological development of gut motility in all regions of the lower digestive tract of the chicken embryo from embryonic days E5 through E9. We characterized motility emergence time, propagation patterns, speed, frequency and amplitude of peristalsis waves...
2017: PloS One
https://www.readbyqxmd.com/read/28221986/induction-of-viable-but-nonculturable-salmonella-in-exponentially-grown-cells-by-exposure-to-a-low-humidity-environment-and-their-resuscitation-by-catalase
#13
Yuta Morishige, Atsushi Koike, Ai Tamura-Ueyama, Fumio Amano
Salmonella is a major cause of foodborne disease that sometimes occurs in massive outbreaks around the world. This pathogen is tolerant of low-humidity conditions. We previously described a method for induction of viable but nonculturable (VBNC) Salmonella enterica serovar Enteritidis by treatment with hydrogen peroxide (H2O2) and subsequent resuscitation with 0.3 mM sodium pyruvate. Here, we report a new method for the induction of the VBNC state in Salmonella Enteritidis cells, one involving dehydration. Exposure of Salmonella Enteritidis cells to dehydration stress under poor nutritional conditions (0...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221942/effect-of-fungicides-on-growth-and-ochratoxin-a-production-by-aspergillus-carbonarius-from-brazilian-wine-grapes
#14
Michelle F Terra, Nathasha de A Lira, Fabiana R F Passamani, Wilder Douglas Santiago, Maria das Graças Cardoso, Luís Roberto Batista
Prevention in the field of mycotoxin-producing fungi is the most effective strategy for controlling the presence of mycotoxins in foods. Chemical fungicides are widely used to protect crops, so their implications on mycotoxin production need to be considered. Therefore, the aim of this study was to evaluate the effect in vitro and on grapes of five fungicides commonly used on grape cultures in Brazil on Aspergillus carbonarius growth and ochratoxin A (OTA) production. At the doses recommended by manufacturers, most fungicides significantly reduced A...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221928/rapid-identification-of-shiga-toxin-producing-escherichia-coli-o-serogroups-from-fresh-produce-and-raw-milk-enrichment-cultures-by-luminex-bead-based-suspension-array
#15
Julie A Kase, Anna Maounounen-Laasri, Andrew Lin
The U.S. Food and Drug Administration's Bacteriological Analytical Manual (BAM) Chapter 4a describes a Luminex microbead-based suspension array used to screen colonies for 11 clinically relevant Shiga toxin-producing Escherichia coli (STEC) serogroups: O26, O45, O91, O103, O104, O111, O113, O121, O128, O145, and O157. We evaluated the usefulness of this method to identify STEC-positive enrichment samples before agar plating. Twelve E. coli strains were added to three types of fresh produce (bagged baby spinach, alfalfa sprouts, and cilantro) at levels near the detection limit of the test...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221914/effects-of-inoculation-procedures-on-variability-and-repeatability-of-salmonella-thermal-resistance-in-wheat-flour
#16
Ian M Hildebrandt, Bradley P Marks, Elliot T Ryser, Rossana Villa-Rojas, Juming Tang, Francisco J Garces-Vega, Sarah E Buchholz
Limited prior research has shown that inoculation methods affect thermal resistance of Salmonella in low-moisture foods; however, these effects and their repeatability have not been systematically quantified. Consequently, method variability across studies limits utility of individual data sets and cross-study comparisons. Therefore, the objective was to evaluate the effects of inoculation methodologies on stability and thermal resistance of Salmonella in a low-moisture food (wheat flour), and the repeatability of those results, based on data generated by two independent laboratories...
November 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221890/enhanced-control-of-listeria-monocytogenes-by-enterococcus-faecium-ke82-a-multiple-enterocin-producing-strain-in-different-milk-environments
#17
Elpiniki Vandera, Alexandra Lianou, Athanasia Kakouri, Jinbo Feng, Anna-Irini Koukkou, John Samelis
Enterococcus faecium KE82, isolated from traditional Greek Graviera cheese, was identified in pure broth cultures in vitro as a multiple enterocin-producing bacterial strain possessing the structural entA, entB, and entP enterocin genes. E. faecium KE82 was further assessed for in situ antilisterial activity in raw milk (RM) and commercially thermized milk (TM; 63°C for 30 s) in the presence of the indigenous microbiota and in sterile raw milk (SRM; 121°C for 5 min) with or without the addition of two commercial starter culture (CSC) strains Streptococcus thermophilus and Lactococcus lactis ...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221883/enrichment-amplification-and-sequence-based-typing-of-salmonella-enterica-and-other-foodborne-pathogens
#18
Tom Edlind, Jeffrey D Brewster, George C Paoli
Detection of Salmonella enterica in foods typically involves microbiological enrichment, molecular-based assay, and subsequent isolation and identification of a pure culture. This is ideally followed by strain typing, which provides information critical to the investigation of outbreaks and the attribution of their sources. Pulsed-field gel electrophoresis is the "gold standard" for S. enterica strain typing, but its limitations have encouraged the search for alternative methods, including whole genome sequencing...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221876/effect-of-magnesium-acetate-on-the-antimold-activity-of-lactobacillus
#19
Katarzyna Kycia, Anna Bzducha-Wróbel, Karolina Kraśniewska, Anna Chlebowska-Śmigiel, Małgorzata Gniewosz
The antimold activity of lactic acid bacteria (LAB) is used in food biopreservation. The aim of this study was to evaluate the effect of magnesium acetate added to de Man Rogosa Sharpe (MRS) medium on the antimold activity of three LAB strains ( Lactobacillus plantarum , Lactobacillus brevis , and Lactobacillus fermentum ) against molds contaminating food ( Aspergillus oryzae , Aspergillus niger , Penicillium chrysogenum , Fusarium avenaceum , and Rhizopus arrhizus ) and their ability to produce organic acids (acetic acid, lactic acid, and phenyllactic acid)...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221873/characterization-of-enterohemorrhagic-escherichia-coli-on-veal-hides-and-carcasses
#20
Joseph M Bosilevac, Rong Wang, Brandon E Luedtke, Susanne Hinkley, Tommy L Wheeler, Mohammad Koohmaraie
Enterohemorrhagic Escherichia coli (EHEC) are Shiga toxin-producing E. coli associated with the most severe forms of foodborne illnesses. The U.S. Department of Agriculture, Food Safety and Inspection Service has identified a higher percentage of non-O157 EHEC compared with E. coli O157:H7-positive samples collected from veal trimmings than from products produced from other cattle slaughter classes. Therefore samples were collected from hides and preevisceration carcasses at five veal processors to assess E...
January 2017: Journal of Food Protection
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