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

