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galacto-oligosaccharides

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https://www.readbyqxmd.com/read/29757343/dietary-fiber-intervention-on-gut-microbiota-composition-in-healthy-adults-a-systematic-review-and-meta-analysis
#1
Daniel So, Kevin Whelan, Megan Rossi, Mark Morrison, Gerald Holtmann, Jaimon T Kelly, Erin R Shanahan, Heidi M Staudacher, Katrina L Campbell
Background: Dysfunction of the gut microbiota is frequently reported as a manifestation of chronic diseases, and therefore presents as a modifiable risk factor in their development. Diet is a major regulator of the gut microbiota and certain types of dietary fiber may modify bacterial numbers and metabolism, including short-chain fatty acid (SCFA) generation. Objective: A systematic review and meta-analysis were undertaken to assess the effect of dietary fiber interventions on gut microbiota composition in healthy adults...
May 11, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29702168/use-of-chitosan-heterofunctionality-for-enzyme-immobilization-%C3%AE-galactosidase-immobilization-for-galacto-oligosaccharide-synthesis
#2
Paulina Urrutia, Claudia Bernal, Lorena Wilson, Andrés Illanes
Chitosan partially functionalized with aldehyde groups was used for enzyme immobilization, favoring first the enzyme adsorption through its amino groups and then the covalent bonding of the adsorbed catalyst through the aldehyde groups of the support. Using this strategy, immobilized A. oryzae β-galactosidase had a better performance than when only the aldehyde groups were used. The performance was further improved by modifying the support aldehyde group density to 200 μmoles⋅g-1 . The biocatalyst under optimized immobilization conditions had 2951 IU⋅g-1 and half-life of 46...
April 24, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29643029/-a-machine-learning-model-based-on-initial-gut-microbiome-data-for-predicting-changes-of-bifidobacterium-after-prebiotics-consumption
#3
Yue-Mei Luo, Fei-Tong Liu, Mu-Xuan Chen, Wen-Li Tang, Yue-Lian Yang, Xi-Lan Tan, Hong-Wei Zhou
OBJECTIVE: To investigate the effects of prebiotics supplementation for 9 days on gut microbiota structure and function and establish a machine learning model based on the initial gut microbiota data for predicting the variation of Bifidobacterium after prebiotic intake. METHODS: With a randomized double-blind self-controlled design, 35 healthy volunteers were asked to consume fructo-oligosaccharides (FOS) or galacto-oligosaccharides (GOS) for 9 days (16 g per day)...
March 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29606767/evaluation-and-application-of-prebiotic-and-probiotic-ingredients-for-development-of-ready-to-drink-tea-beverage
#4
Shweta Tewari, Kriti Kumari Dubey, Rekha S Singhal
Ready-to-drink (RTD) ice tea is a ready prepared tea, produced from green and black tea originating from same plant Camellia sinensis . The objective of this study was to determine the effect of prebiotics [galacto-oligosaccharide (GOS), fructo-oligosaccharide (FOS), and inulin] or synbiotic ingredients (GOS, FOS, inulin, and Lactobacillus acidophilus ) on the sensory properties and consumer acceptability of RTD. The quality of green tea extract (GTE) and black tea extract (BTE) was improved with pretreatment of cellulase and pectinase enzymes...
April 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29579345/the-effects-of-prebiotic-supplementation-on-weight-gain-diarrhoea-constipation-fever-and-respiratory-tract-infections-in-the-first-year-of-life
#5
Iraj Shahramian, Gholamreza Kalvandi, Hazhir Javaherizadeh, Manijeh Khalili, Noor Mohammad Noori, Mojtaba Delaramnasab, Ali Bazi
AIM: This study was conducted to evaluate the effect of prebiotics on some common clinical ailments in healthy term infants. METHODS: Sixty healthy-term, breastfed (BF) infants were included. Along with these infants, 120 healthy-term formula-fed infants were randomly assigned to either the prebiotic formula (PF, n = 60) or regular formula (RF, n = 60) groups. Ready-to-use prebiotic-supplemented formula containing galacto-oligosaccharides and polydextrose (ratio 1:1) was used...
March 26, 2018: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29494489/galacto-oligosaccharide-polidextrose-enriched-formula-protects-against-respiratory-infections-in-infants-at-high-risk-of-atopy-a-randomized-clinical-trial
#6
Giusy Ranucci, Vittoria Buccigrossi, Eleonora Borgia, Daniela Piacentini, Federica Visentin, Luigi Cantarutti, Paola Baiardi, Mariagrazia Felisi, Maria Immacolata Spagnuolo, Stefania Zanconato, Eugenio Baraldi, Carlo Giaquinto, Alfredo Guarino
BACKGROUND: Early nutrition affects the risk of atopy and infections through modifications of intestinal microbiota. The Prebiotics in the Prevention of Atopy (PIPA) study was a 24-month randomised, double-blind, placebo-controlled trial. It aimed to evaluate the effects of a galacto-oligosaccharide/polydextrose (GOS/PDX)-formula (PF) on atopic dermatitis (AD) and common infections in infants who were born to atopic parents and to investigate the relationship among early nutrition, gut microbiota and clinical outcomes...
March 1, 2018: Nutrients
https://www.readbyqxmd.com/read/29473657/fermentable-short-chain-carbohydrate-fodmap-content-of-common-plant-based-foods-and-processed-foods-suitable-for-vegetarian-and-vegan-based-eating-patterns
#7
C Tuck, E Ly, A Bogatyrev, I Costetsou, P Gibson, J Barrett, J Muir
BACKGROUND: The low FODMAP (fermentable, oligo-, di-, mono-saccharides and polyols) diet is an effective strategy to improve symptoms of irritable bowel syndrome. However, combining the low FODMAP diet with another dietary restriction such as vegetarianism/veganism is challenging. Greater knowledge about the FODMAP composition of plant-based foods and food processing practices common to vegetarian/vegan eating patterns would assist in the implementation of the diet in this patient population...
February 23, 2018: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/29465126/effects-of-a-galacto-oligosaccharide-rich-diet-on-fecal-microbiota-and-metabolite-profiles-in-mice
#8
W Cheng, J Lu, W Lin, X Wei, H Li, X Zhao, A Jiang, J Yuan
Galacto-oligosaccharides (GOS) are prebiotics that positively affect the host's gut microbiota, which is important for the health of the host. Most previous studies focused on specific flora components (e.g. Bifidobacterium and Lactobacillus); very few have investigated the relationship between flora and metabolites. Here, we used 16S rRNA analysis and metabolomics to analyze the effect of GOS on microbiota and metabolites. Results show that the abundance of Ruminococcaceae and Oscillibacter decreased significantly in GOS-fed mice...
March 1, 2018: Food & Function
https://www.readbyqxmd.com/read/29426417/production-of-galacto-oligosaccharides-from-whey-permeate-using-%C3%AE-galactosidase-immobilized-on-functionalized-glass-beads
#9
Hamed Eskandarloo, Alireza Abbaspourrad
The conversion of whey permeates to galacto-oligosaccharides (GOS) was studied by the enzymatic action of β-galactosidase from Aspergillus oryzae in a continuous flow packed-bed reactor. A novel method of enzyme immobilization involving covalent immobilization of β-galactosidase on 3-aminopropyl triethoxysilane(3-APTES)-modified glass beads was developed by the cross-linking method. The pH and temperature dependence of the enzymatic efficiency of the glass bead-immobilized enzyme was compared with that of the free enzyme...
June 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29407616/effect-of-dietary-prebiotics-and-probiotics-on-snakehead-channa-striata-health-haematology-and-disease-resistance-parameters-against-aeromonas-hydrophila
#10
Mohammad Bodrul Munir, Roshada Hashim, Siti Azizah Mohd Nor, Terence L Marsh
This study examined the effect of dietary prebiotics and probiotics after 16 weeks, followed by 8 weeks of post feeding trial with the control unsupplemented diet on haematological and immune response against Aeromonas hydrophila infection in Channa striata fingerlings. Fish were raised on a 40% protein and 12% lipid feed containing three commercial prebiotics (β-glucan, GOS or galacto-oligosaccharide, MOS or mannan-oligosaccharide); and two probiotics- (Saccharomyces cerevisiae, Lactobacillus acidophilus), respectively and a control...
April 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29397172/immobilization-of-whole-cells-of-lactococcus-lactis-containing-high-levels-of-a-hyperthermostable-%C3%AE-galactosidase-enzyme-in-chitosan-beads-for-efficient-galacto-oligosaccharide-production
#11
L Yu, D J O'Sullivan
Galacto-oligosaccharides (GOS) are prebiotic food ingredients that are proposed to stimulate the growth of beneficial gut microorganisms, particularly bifidobacteria. Previously, we developed a method for efficient GOS production using whole cells of Lactococcus lactis containing high levels of a hyper-thermostable β-galactosidase enzyme from Sulfolobus solfataricus. In this study, a recombinant DNA removal and whole-cell enzyme immobilization process was developed to produce GOS from lactose before removal of the immobilized whole-cell enzyme, which could be reused for subsequent applications...
April 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29339290/biocatalytic-strategies-in-the-production-of-galacto-oligosaccharides-and-its-global-status
#12
REVIEW
Parmjit S Panesar, Rupinder Kaur, Ram S Singh, John F Kennedy
Galactooligosaccharides (GOSs) are the non-digestible carbohydrates that are composed of 3-10 or longer molecules of galactose and the terminal glucose molecule. These are considered as prebiotics owing to their various health benefits, and therefore is the major focus of research. These are generally synthesized by the catalytic activity of the glycoside hydrolases (GH) utilizing lactose as a substrate, which results in the mixture of GOSs differing in their degree of polymerization. Different microbial glycoside hydrolases have been used for the production...
May 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29202487/maillard-neoglycans-as-inhibitors-for-in-vitro-adhesion-of-f4-enterotoxigenic-escherichia-coli-to-piglet-intestinal-cells
#13
Héctor Manuel Sarabia-Sainz, Verónica Mata Haro, José Andre-I Sarabia Sainz, Luz Vázquez-Moreno, Gabriela Ramos-Clamont Montfort
Adhesion of enterotoxigenic (ETEC) E. coli to host intestinal cells is mediated by lectin-like fimbriae that bind to specific glycan moieties on the surfaces of enterocytes. To prevent in vitro binding of E. coli F4 fimbriae (F4 ETEC+ ) to piglet enterocytes, neoglycans were synthesized by the Maillard reaction conjugating lactose (Lac), galacto-oligosaccharides (GOS) or chitin oligosaccharides (Ochit) to porcine serum albumin (PSA). Neoglycans were characterized by SDS-PAGE, intrinsic tryptophan fluorescence and recognition by plant lectins, as well as by F4 ETEC variants...
2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29181381/impact-of-dietary-galacto-oligosaccharide-gos-on-chicken-s-gut-microbiota-mucosal-gene-expression-and-salmonella-colonization
#14
Rebecca-Ayme Hughes, Riawana A Ali, Mary A Mendoza, Hosni M Hassan, Matthew D Koci
Preventing Salmonella colonization in young birds is key to reducing contamination of poultry products for human consumption (eggs and meat). While several Salmonella vaccines have been developed that are capable of yielding high systemic antibodies, it is not clear how effective these approaches are at controlling or preventing Salmonella colonization of the intestinal tract. Effective alternative control strategies are needed to help supplement the bird's ability to prevent Salmonella colonization, specifically by making the cecum less hospitable to Salmonella ...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29174530/increased-cortical-neuronal-responses-to-nmda-and-improved-attentional-set-shifting-performance-in-rats-following-prebiotic-b-gos-%C3%A2-ingestion
#15
Benjamin Gronier, Helene M Savignac, Mathieu Di Miceli, Sherif M Idriss, George Tzortzis, Daniel Anthony, Philip W J Burnet
We have previously shown that prebiotics (dietary fibres that augment the growth of indigenous beneficial gut bacteria) such as Bimuno™ galacto-oligosaccharides (B-GOS® ), increased N-methyl-D-aspartate (NMDA) receptor levels in the rat brain. The current investigation examined the functional correlates of these changes in B-GOS® -fed rats by measuring cortical neuronal responses to NMDA using in vivo NMDA micro-iontophoresis electrophysiology, and performance in the attentional set-shifting task. Adult male rats were supplemented with B-GOS® in the drinking water 3 weeks prior to in vivo iontophoresis or behavioural testing...
January 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29161572/new-%C3%AE-galactosidase-producers-with-potential-for-prebiotic-synthesis
#16
Sara C Silvério, Eugénia A Macedo, José A Teixeira, Lígia R Rodrigues
β-Galactosidases (EC 3.2.1.23) are interesting enzymes with potential application in the pharmaceutical and food industry. In this work, a screening study was carried out to identify new fungal sources of β-galactosidase. A total of 50 fungi were evaluated using a chromogenic test performed in agar plates. The most promising microorganisms were validated as effective β-galactosidase producers under submerged fermentation conditions. The crude β-galactosidases were characterized regarding their optimal pH (3...
November 15, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29058322/influence-of-different-functional-ingredients-on-physical-properties-rheology-tribology-and-oral-perceptions-of-no-fat-stirred-yoghurt
#17
Sophia Bao Xian Ng, Phuong T M Nguyen, Bhesh Bhandari, Sangeeta Prakash
Effects of adding four functional ingredients: inulin, pectin, galacto-oligosaccharides (GOS), and beta glucan on physical, rheology, tribology and sensory characteristics of skim (0.1% fat) stirred yoghurt were studied. Three levels of each ingredient were chosen: inulin (7%, 8% and 9%), pectin (0.2%, 0.25% and 0.3%), GOS (9.1%, 11.3% and 13.6%), and beta glucan (0.1%, 0.2% and 0.3%). Among the investigated ingredients, inulin and GOS appeared to be preferable choices due to their ability to both reduce syneresis and slightly increase sample lubrication while maintaining texture, rheology and sensory characteristics of skim yoghurt...
October 23, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/29036913/alpha-galacto-oligosaccharides-at-low-dose-improve-liver-steatosis-in-a-high-fat-diet-mouse-model
#18
Eric Chappuis, Fanny Morel-Depeisse, Bruno Bariohay, Julien Roux
Non-Alcoholic Fatty Liver Disease (NAFLD) is the major liver disease worldwide and is linked to the development of metabolic syndrome and obesity. As alpha-galacto-oligosaccharides (α-GOS) from legumes have been shown to reduce body weight and hyperphagia in overweight adults, it was hypothesized that they would exert benefits on the development of metabolic syndrome and associated NAFLD in a rodent model. C57Bl/6J mice were fed a high-fat diet until they developed metabolic syndrome and were then orally treated either with α-GOS at a physiological dose (2...
October 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28993261/volatile-organic-compounds-in-feces-associate-with-response-to-dietary-intervention-in-patients-with-irritable-bowel-syndrome
#19
Megan Rossi, Raphael Aggio, Heidi M Staudacher, Miranda C Lomer, James O Lindsay, Peter Irving, Chris Probert, Kevin Whelan
BACKGROUND & AIMS: Dietary interventions are effective in management of patients with irritable bowel syndrome (IBS), although responses vary. We investigated whether fecal levels of volatile organic compounds (VOCs) associate with response to dietary interventions in patients with IBS. METHODS: Adults who fulfilled the Rome III criteria for IBS were recruited to a 2x2 factorial randomized controlled trial. Patients were randomly assigned to a group counselled to follow a diet low in fructans, galacto-oligosaccharides, lactose, fructose, and polyols (low-FODMAP diet, n = 46) or a group that received placebo dietary advice (sham diet, n = 47) for 4 weeks...
March 2018: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28979240/effect-of-functional-oligosaccharides-and-ordinary-dietary-fiber-on-intestinal-microbiota-diversity
#20
Weiwei Cheng, Jing Lu, Boxing Li, Weishi Lin, Zheng Zhang, Xiao Wei, Chengming Sun, Mingguo Chi, Wei Bi, Bingjun Yang, Aimin Jiang, Jing Yuan
Functional oligosaccharides, known as prebiotics, and ordinary dietary fiber have important roles in modulating the structure of intestinal microbiota. To investigate their effects on the intestinal microecosystem, three kinds of diets containing different prebiotics were used to feed mice for 3 weeks, as follows: GI (galacto-oligosaccharides and inulin), PF (polydextrose and insoluble dietary fiber from bran), and a GI/PF mixture (GI and PF, 1:1), 16S rRNA gene sequencing and metabolic analysis of mice feces were then conducted...
2017: Frontiers in Microbiology
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