Results 71 to 80 of about 1,413 (192)

Selective utilization of gluco‐oligosaccharides by lactobacilli: A mechanism study revealing the impact of glycosidic linkages and degree of polymerization on their utilization

open access: yesJournal of Food Science, Volume 89, Issue 1, Page 523-539, January 2024.
Abstract Gluco‐oligosaccharides (GlcOS) are potential prebiotics that positively modulate beneficial gut commensals like lactobacilli. For the rational design of GlcOS as prebiotics or combined with lactobacilli as synbiotics, it is important to establish the structure requirements of GlcOS and specificity toward lactobacilli.
Meijun Zeng   +3 more
wiley   +1 more source

Assessing the Efficacy of Dextran and Dextransucrase in Modulating MCF-7 Breast Cancer Cell Activity

open access: yesMagazin of Al-Kufa University for Biology
Tumor development is a complex process involving abnormal cell proliferation within an organism. This study aims to understand tumors, their categorization, formation methods, and effects on human health.
Yasameen Hasan Ali   +2 more
doaj   +1 more source

Efficient Synthesis and Characterization of Lactulosucrose by Leuconostoc mesenteroides B‑512F Dextransucrase

open access: yes, 2016
This work describes an efficient enzymatic synthesis and NMR structural characterization of the trisaccharide β-d-galactopyranosyl-(1→4)-β-d-fructofuranosyl-(2→1)-α-d-glucopyranoside, also termed as lactulosucrose.
F. Javier Moreno (800411)   +4 more
core   +1 more source

Enzymatic production of glucooligosaccharides using dextransucrases from strains Leuconostoc mesenteroides Lm 22 and Leuconostoc mesenteroides Lm 28 [PDF]

open access: yesJournal of BioScience and Biotechnology, 2012
Dextransucrases are enzymes that transfer the glucosyl moiety from sucrose to other acceptor molecules. In the present study, we have investigated the biosynthesis of dextransucrases by two strains of Leuconostoc mesenteroides isolated from Bulgarian ...
ILIA ILIEV, TONKA VASILEVA
doaj  

Different Modes of Regulation of the Expression of Dextransucrase in Leuconostoc lactis AV1n and Lactobacillus sakei MN1

open access: yesFrontiers in Microbiology, 2019
Leuconostoc lactis AV1 strain isolated from a Tunisian avocado was characterized as a dextran producer. The promoter PdsrLL and the dsrLL gene encoding the DsrLL dextransucrase responsible for the dextran synthesis were transcriptionally fused to the ...
Norhane Besrour-Aouam   +12 more
doaj   +1 more source

Studies on Dextransucrase Part I

open access: yesJournal of the agricultural chemical society of Japan, 1972
(1) Leucanostoc mesenteroides IAM 1046により,デキストランシュクラーゼを生産させるための培地,および培養条件を検討した. (2)上記菌株のデキストランシュクラーゼの部分的精製を行ない,硫安塩析およびDEAE-セルロースによるクロマトグラフィーを期いて,比活性が培養液の24~56倍の精製酵素を得た. (3)部分精製したデキストランシュクラーゼの酵素化学的性質を検討した.その結果,この酵素は作用最適pH 5.0,最適温度30°C, pH 4.0~7.5において安定であるが, 40°C以上にて速やかに失活するなどのことがわかった.またMichaelis恒数は30°C, pH 5.0で1.57×10-2 (M)であった.
Michio NIINOBE, Tsuneo KOBAYASHI
openaire   +2 more sources

Glucosylation of the flavonoid, astragalin by Leuconostoc mesenteroides B-512FMCM dextransucrase acceptor reactions and characterization of the products

open access: yes, 2011
Astragalin (kaempferol-3-O-Beta-D-glucopyranoside, Ast) glucosides were synthesized by the acceptor reaction of a dextransucrase produced by Leuconostoc mesenteroides B-512FMCM with astragalin and sucrose. Each glucoside was purified and their structures
안설아
core  

Comparative study of the efficacies of nine assay methods for the dextransucrase synthesis of dextran

open access: yes, 2011
A comparative study of nine assay methods for dextransucrase and related enzymes has been made. A relatively widespread method for the reaction of dextransucrase with sucrose is the measurement of the reducing value of D-fructose by alkaline 3,5 ...
Mukerjea, Rupendra   +6 more
core   +1 more source

Effect of phosphate concentration on the production of dextransucrase by Leuconostoc mesenteroides NRRL B512F

open access: yes, 2015
Leuconostoc mesenteroides NRRL B512F is the main strain used in industrial fermentations to produce dextransucrase and dextran. This process has been studied since the Second World War, when it was used as blood plasma expander.
Franco, T T   +4 more
core   +1 more source

Shotgun Metagenomics of a Water Kefir Fermentation Ecosystem Reveals a Novel Oenococcus Species

open access: yesFrontiers in Microbiology, 2019
Water kefir is a fruity, sour, slightly alcoholic and carbonated beverage, which is made by fermentation of an aqueous sucrose solution in the presence of dried figs and water kefir grains.
Marko Verce, Luc De Vuyst, Stefan Weckx
doaj   +1 more source

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