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https://www.readbyqxmd.com/read/28641406/novel-antimicrobial-activities-of-a-peptide-derived-from-a-japanese-soybean-fermented-food-natto-against-streptococcus-pneumoniae-and-bacillus-subtilis-group-strains
#1
Manabu Kitagawa, Tsukasa Shiraishi, Soh Yamamoto, Ryosuke Kutomi, Yasuo Ohkoshi, Toyotaka Sato, Hideki Wakui, Hideaki Itoh, Atsushi Miyamoto, Shin-Ichi Yokota
We recently isolated a tumoricidal peptide from Natto, a Japanese traditional fermented food. In the present study, antimicrobial activity of the Natto peptide was examined. The peptide consisted of 45 amino acid residues, and its structure was predicted to be rich in α-helix. It excreted antimicrobial activity only against Streptococcus pneumoniae and Bacillus subtilis group (B. subtilis, Bacillus pumilus, and Bacillus licheniformis). Lesser antimicrobial activity was observed for Streptococcus species other than S...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28631270/comparison-of-in-vivo-toxicity-antioxidant-and-immunomodulatory-activities-of-coconut-nipah-and-pineapple-juice-vinegars
#2
Nurul Elyani Mohamad, Swee KeongYeap, Boon Keen Beh, Muhammad Firdaus Romli, Hamidah Mohd Yusof, Ye Wen Kristeen-Teo, Shaiful Adzni Sharifuddin, Kamariah Long, Noorjahan Banu Alitheen
BACKGROUND: Vinegar is widely used as a food additive, in food preparation and as a food supplement. This study compared the phenolic acid profiles and in vivo toxicities, and antioxidant and immunomodulatory effects of coconut, nipah and pineapple juice vinegars, which were respectively prepared via a two-step fermentation using Saccharomyces cerevisiae 7013 INRA and Acetobacter aceti vat Europeans. RESULTS: Pineapple juice vinegar, which had the highest total phenolic acid content, also exhibited the greatest in vitro antioxidant capacity compared to coconut juice and nipah juice vinegars...
June 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28631049/novel-probiotics-isolated-from-a-japanese-traditional-fermented-food-funazushi-attenuates-dss-induced-colitis-by-increasing-the-induction-of-high-integrin-%C3%AE-v-%C3%AE-8-expressing-dendritic-cells
#3
Yoshikiyo Okada, Yoshikazu Tsuzuki, Takajo Takeshi, Hirotaka Furuhashi, Masaaki Higashiyama, Chikako Watanabe, Kazuhiko Shirakabe, Chie Kurihara, Shunsuke Komoto, Kengo Tomita, Shigeaki Nagao, Soichiro Miura, Ryota Hokari
BACKGROUND: We isolated two novel probiotics strains (s193 and s292) from Funazushi, which is a traditional Japanese fermented food, and evaluated its effects on DSS-induced colitis to determine the possible underlying mechanisms. METHODS: A single colony from homogenized Funazushi was isolated by its ability to suppress TNF-α in RAW 264.7. Effect of probiotics on colonic inflammation induced by DSS was evaluated. Effect of probiotics on Treg induction by CD11c(+) dendritic cells (DCs) of MLNs were analyzed...
June 19, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28631029/syngas-biorefinery-and-syngas-utilization
#4
Sashini De Tissera, Michael Köpke, Sean D Simpson, Christopher Humphreys, Nigel P Minton, Peter Dürre
Autotrophic acetogenic bacteria are able to capture carbon (CO or CO2) through gas fermentation, allowing them to grow on a spectrum of waste gases from industry (e.g., steel manufacture and oil refining, coal, and natural gas) and to produce ethanol. They can also consume syn(thesis) gas (CO and H2) made from the gasification of renewable/sustainable resources, such as biomass and domestic/agricultural waste. Acetogenic gas fermentation can, therefore, produce ethanol in any geographic region without competing for food or land...
June 20, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/28629967/isolation-of-fungi-from-dung-of-wild-herbivores-for-application-in-bioethanol-production
#5
Rhulani Makhuvele, Ignatious Ncube, Elbert Lukas Jansen van Rensburg, Daniël Coenrad La Grange
Producing biofuels such as ethanol from non-food plant material has the potential to meet transportation fuel requirements in many African countries without impacting directly on food security. The current shortcomings in biomass processing are inefficient fermentation of plant sugars, such as xylose, especially at high temperatures, lack of fermenting microbes that are able to resist inhibitors associated with pre-treated plant material and lack of effective lignocellulolytic enzymes for complete hydrolysis of plant polysaccharides...
June 3, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28629709/energy-recovery-from-one-and-two-stage-anaerobic-digestion-of-food-waste
#6
Giorgia De Gioannis, Aldo Muntoni, Alessandra Polettini, Raffaella Pomi, Daniela Spiga
One- and two-stage anaerobic digestion of food waste aimed at recovering methane (CH4) and hydrogen and methane (H2+CH4), respectively, were compared in order to assess the potential benefits from the two-stage process in terms of overall energy recovery. Results suggest that a two-stage process where the first reactor is properly operated in order to achieve a significant net hydrogen production, may display a 20% comparatively higher energy recovery yield as a result, mainly, of enhanced methane production as well as of the associated hydrogen production...
June 16, 2017: Waste Management
https://www.readbyqxmd.com/read/28629698/cardboard-proportions-and-total-solids-contents-as-driving-factors-in-dry-co-fermentation-of-food-waste
#7
Gabriel Capson-Tojo, Eric Trably, Maxime Rouez, Marion Crest, Nicolas Bernet, Jean-Philippe Steyer, Jean-Philippe Delgenès, Renaud Escudié
This study evaluated the influence of the co-substrate proportions (0-60% of cardboard in dry basis) and the initial total solid contents (20-40%) on the batch fermentation performance. Maximum hydrogen yields were obtained when mono-fermenting food waste at high solids contents (89mlH2·gVS(-1)). The hydrogen yields were lower when increasing the proportions of cardboard. The lower hydrogen yields at higher proportions of cardboard were translated into higher yields of caproic acid (up to 70.1gCOD·kgCODbio(-1)), produced by consumption of acetic acid and hydrogen...
June 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28625983/strain-level-metagenomic-analysis-of-the-fermented-dairy-beverage-nunu-highlights-potential-food-safety-risks
#8
Aaron M Walsh, Fiona Crispie, Kareem Daari, Orla O'Sullivan, Jennifer C Martin, Cornelius T Arthur, Marcus J Claesson, Karen P Scott, Paul D Cotter
The rapid detection of pathogenic strains in food products is essential for the prevention of disease outbreaks. It has already been demonstrated that whole metagenome shotgun sequencing can be used to detect pathogens in food but, until recently, strain-level detection of pathogens has relied on whole metagenome assembly, which is a computationally demanding process. Here, we demonstrate that three short read alignment-based methods, MetaMLST, PanPhlAn, and StrainPhlAn, can accurately, and rapidly, identify pathogenic strains in spinach metagenomes which were intentionally spiked with Shiga toxin-producing Escherichia coli in a previous study...
June 16, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28625832/diet-low-in-fodmaps-reduces-symptoms-in-patients-with-irritable-bowel-syndrome-and-probiotic-restores-bifidobacterium-species-a-randomized-controlled-trial
#9
H M Staudacher, M C E Lomer, F M Farquharson, P Louis, F Fava, E Franciosi, M Scholz, K M Tuohy, J O Lindsay, P M Irving, K Whelan
BACKGROUND & AIMS: Dietary restriction of fermentable carbohydrates (a low FODMAP diet) has been reported to reduce symptoms in some patients with irritable bowel syndrome (IBS). We performed a randomized, placebo-controlled study to determine its effects on symptoms and the fecal microbiota in patients with IBS. METHODS: We performed a 2x2 factorial trial of 104 patients with IBS (18-65 years old), based on the Rome III criteria, at 2 hospitals in the United Kingdom...
June 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28625612/enhanced-production-of-natural-yellow-pigments-from-monascus-purpureus-by-liquid-culture-the-relationship-between-fermentation-conditions-and-mycelial-morphology
#10
Jun Lv, Bo-Bo Zhang, Xiao-Dong Liu, Chan Zhang, Lei Chen, Gan-Rong Xu, Peter Chi Keung Cheung
Natural yellow pigments produced by submerged fermentation of Monascus purpureus have potential economic value and application in the food industry. In the present study, the relationships among fermentation conditions (in terms of pH and shaking/agitation speed), mycelial morphology and the production of Monascus yellow pigments were investigated in both shake-flask and scale-up bioreactor experiments. In the shake-flask fermentation, the highest yield of the Monascus yellow pigments was obtained at pH 5.0 and a shaking speed of 180 rpm...
June 15, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28622981/progress-of-succinic-acid-production-from-renewable-resources-metabolic-and-fermentative-strategies
#11
REVIEW
Min Jiang, Jiangfeng Ma, Mingke Wu, Rongming Liu, Liya Liang, Fengxue Xin, Wenming Zhang, Honghua Jia, Weiliang Dong
Succinic acid is a four-carbon dicarboxylic acid, which has attracted much interest due to its abroad usage as a precursor of many industrially important chemicals in the food, chemicals, and pharmaceutical industries. Facing the shortage of crude oil supply and demand of sustainable development, biological production of succinic acid from renewable resources has become a topic of worldwide interest. In recent decades, robust producing strain selection, metabolic engineering of model strains, and process optimization for succinic acid production have been developed...
June 3, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28622636/crispr-based-engineering-of-next-generation-lactic-acid-bacteria
#12
REVIEW
Claudio Hidalgo-Cantabrana, Sarah O'Flaherty, Rodolphe Barrangou
The advent of CRISPR-based technologies has opened new avenues for the development of next-generation food microorganisms and probiotics with enhanced functionalities. Building off two decades of functional genomics studies unraveling the genetic basis for food fermentations and host-probiotic interactions, CRISPR technologies offer a wide range of opportunities to engineer commercially-relevant Lactobacillus and Bifidobacteria. Endogenous CRISPR-Cas systems can be repurposed to enhance gene expression or provide new features to improve host colonization and promote human health...
June 13, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28621836/-dietary-advanced-glycation-end-products-modify-gut-microbial-composition-and-partially-increase-colon-permeability-in-rats
#13
Wanting Qu, Xiaojin Yuan, Jinsong Zhao, Yingxiao Zhang, Jing Hu, Jiawei Wang, Juxiu Li
SCOPE: The adverse impacts of dietary advanced glycation end products (AGEs) on health are currently of interest. These compounds are inevitably formed during thermal food processing and make foods less digestible because of protein cross-linking. This study examined not only whether dietary AGEs alter cecal microbiota and their metabolites but also their effects on colon permeability. METHODS AND RESULTS: Sprague-Dawley rats were exposed to a high-AGEs diet (AGEs content was increased by heating food at 125°C/3 h) for 6, 12, or 18 weeks...
June 16, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28621109/comparative-genomic-analysis-of-lactobacillus-plantarum-gb-lp1-isolated-from-traditional-korean-fermented-food
#14
Jihyun Yu, Sojin Ahn, Kwondo Kim, Kelsey Caetano-Anolles, Chanho Lee, Jungsun Kang, Kyungjin Cho, SookHee Yoon, Dae-Kyung Kang, Heebal Kim
As probiotics play an important role in maintaining a healthy gut flora environment through antitoxin activity and inhibition of pathogen colonization, they have been of interest to the medical research community for quite some time now. Probiotic bacteria such as Lactobacillus plantarum, which can be found in fermented food, are of particular interest given their easy accessibility. We performed whole genome sequencing and genomic analysis on a GB-LP1 strain of L. plantarum isolated from Korean traditional fermented food; this strain is well known for its functions in immune response, suppression of pathogen growth and anti-toxin effects...
June 16, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28620184/transcriptomic-analysis-of-the-regulation-of-lipid-fraction-migration-and-fatty-acid-biosynthesis-in-schizochytrium-sp
#15
Lujing Ren, Xuechao Hu, Xiaoyan Zhao, Shenglan Chen, Yi Wu, Dan Li, Yadong Yu, Lingjun Geng, Xiaojun Ji, He Huang
Schizochytrium sp. is the main source of docosahexaenoic acid-rich oil, which is widely used in food additive and pharmaceutical industry. In this study, using RNA-seq, comparative transcriptomic analyses were performed at four stages of DHA fermentation by Schizochytrium sp to get potential genes related to cell transition from cell growth to lipid accumulation and then to lipid turnover. 1406, 385, 1384 differently expressed genes were identified by comparisons in pairs of S2 vs S1, S3 vs S2 and S4 vs S3...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619110/effect-of-aspartic-acid-and-glutamate-on-metabolism-and-acid-stress-resistance-of-acetobacter-pasteurianus
#16
Haisong Yin, Renkuan Zhang, Menglei Xia, Xiaolei Bai, Jun Mou, Yu Zheng, Min Wang
BACKGROUND: Acetic acid bacteria (AAB) are widely applied in food, bioengineering and medicine fields. However, the acid stress at low pH conditions limits acetic acid fermentation efficiency and high concentration of vinegar production with AAB. Therefore, how to enhance resistance ability of the AAB remains as the major challenge. Amino acids play an important role in cell growth and cell survival under severe environment. However, until now the effects of amino acids on acetic fermentation and acid stress resistance of AAB have not been fully studied...
June 15, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28618861/potentially-probiotic-lactobacillus-strains-with-anti-proliferative-activity-induce-cytokine-chemokine-production-and-neutrophil-recruitment-in-mice
#17
G Saxami, A Karapetsas, P Chondrou, S Vasiliadis, E Lamprianidou, I Kotsianidis, P Ypsilantis, S Botaitis, C Simopoulos, A Galanis
Lactobacillus pentosus B281 and Lactobacillus plantarum B282 are two Lactobacillus strains previously isolated from fermented table olives. Both strains were found to possess probiotic properties and displayed desirable technological characteristics for application as starters in novel functional food production. In the present study the anti-proliferative and immunostimulatory activities of the two strains were investigated. Firstly, we demonstrated that live L. pentosus B281 and L. plantarum B282 significantly inhibited the growth of human colon cancer cells (Caco-2) in a time- and dose-dependent manner...
June 16, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28618173/inter-individual-differences-determine-the-outcome-of-wheat-bran-colonization-by-the-human-gut-microbiome
#18
Kim De Paepe, Frederiek-Maarten Kerckhof, Joran Verspreet, Christophe M Courtin, Tom Van de Wiele
Gut microbiota research reveals a vital role for the luminal and mucosal gut microbiota in human health. Fewer studies, however, have characterized the microbiome associated with undigested, insoluble dietary particles in the gut. These particles can act as a food source for bacteria and offer a physical platform to which they can attach. In this study, the microbiome colonizing wheat bran particles was analyzed. In a batch experiment, wheat bran particles were separately incubated with the fecal microbiota derived from ten donors and washed after 48h to remove loosely attached bacteria...
June 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28616072/the-advanced-strategy-for-enhancing-biobutanol-production-and-high-efficient-product-recovery-with-reduced-wastewater-generation
#19
Chuang Xue, Xiaotong Zhang, Jufang Wang, Min Xiao, Lijie Chen, Fengwu Bai
BACKGROUND: Butanol as an important chemical and potential fuel could be produced via ABE fermentation from lignocellulosic biomass. The use of food-related feedstocks such as maize and sugar cane may not be a sustainable solution to world's energy needs. Recently, Jerusalem artichoke tubers containing inulin have been used as feedstock for butanol production, but this bioprocess is not commercially feasible due to the great value of inulin as functional food. Till now, there is a gap on the utilization of Jerusalem artichoke stalk (JAS) as feedstock for microbial butanol production...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28616071/combined-de-novo-and-ex-novo-lipid-fermentation-in-a-mix-medium-of-corncob-acid-hydrolysate-and-soybean-oil-by-trichosporon-dermatis
#20
Chao Huang, Mu-Tan Luo, Xue-Fang Chen, Gao-Xiang Qi, Lian Xiong, Xiao-Qing Lin, Can Wang, Hai-Long Li, Xin-De Chen
BACKGROUND: Microbial oil is one important bio-product for its important function in energy, chemical, and food industry. Finding suitable substrates is one key issue for its industrial application. Both hydrophilic and hydrophobic substrates can be utilized by oleaginous microorganisms with two different bio-pathways ("de novo" lipid fermentation and "ex novo" lipid fermentation). To date, most of the research on lipid fermentation has focused mainly on only one fermentation pathway and little work was carried out on both "de novo" and "ex novo" lipid fermentation simultaneously; thus, the advantages of both lipid fermentation cannot be fulfilled comprehensively...
2017: Biotechnology for Biofuels
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