Results 51 to 60 of about 1,413 (192)

Recombinant Expression of Dextransucrase in Food-grade Lactic Acid Bacteria

open access: yesShipin gongye ke-ji
In order to study the synthesis of dextran in Lactobacillus and to analyze its structure, in this study, the dextransucrase DsrB was ligated with the Lactococcus lactis expression vector pNZ8148 plasmid vector with SP45 secretion signal peptide, and ...
Yuanhao PU   +5 more
doaj   +1 more source

Functional Identification of the Dextransucrase Gene of Leuconostoc mesenteroides DRP105. [PDF]

open access: yesInt J Mol Sci, 2020
Leuconostoc mesenteroides DRP105 isolated from Chinese sauerkraut juice is an intensive producer of dextran. We report the complete genome sequence of Leu. mesenteroides DRP105.
Du R, Zhou Z, Han Y.
europepmc   +2 more sources

Genomic Characterisation of Limosilactobacillus fermentum CRL2085 Unveiling Probiotic Traits for Application in Cattle Feed

open access: yesEnvironmental Microbiology Reports, Volume 17, Issue 5, October 2025.
A comprehensive genomic and phenotypic analysis of Limosilactobacillus fermentum CRL2085 revealed key probiotic and nutritional traits supporting its safe application in cattle feed. The strain harbors genes for stress tolerance, adhesion, exopolysaccharide production, and B‐vitamin biosynthesis, and efficiently metabolizes plant‐derived carbohydrates,
Cecilia M. Aristimuño Ficoseco   +9 more
wiley   +1 more source

Functional role and folding properties of the glucan‐binding domain of oral bacterial glucansucrase

open access: yesFEBS Letters, Volume 599, Issue 16, Page 2388-2402, August 2025.
The role of the glucan‐binding domain in Streptococcus sobrinus glucansucrase was examined, focusing on its impact on enzymatic activity, dextran binding, and structural stability of deletion mutants and a circularly permuted protein. Our research revealed that glucosyl transfer efficiency is linked to cooperative interdomain folding.
Hideyuki Komatsu   +5 more
wiley   +1 more source

Analysis of carbohydrates and glycoconjugates by matrix‐assisted laser desorption/ionization mass spectrometry: An update for 2021–2022

open access: yesMass Spectrometry Reviews, Volume 44, Issue 3, Page 213-453, May/June 2025.
Abstract The use of matrix‐assisted laser desorption/ionization (MALDI) mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this review is the 12th update of the original article published in 1999 and brings coverage of the literature to the end of 2022.
David J. Harvey
wiley   +1 more source

A systematic approach to study the pH-dependent release, productivity and product specificity of dextransucrases

open access: yesMicrobial Cell Factories, 2019
Background Dextransucrases are extracellular enzymes, which catalyze the formation of α-1→6-linked glucose polymers from sucrose. These enzymes are exclusively expressed by lactic acid bacteria, which commonly acidify the extracellular environment due to
Jonas Schmid   +3 more
doaj   +1 more source

Scale up of dextran production from a mutant of Pediococcus pentosaceus (SPAm) using optimized medium in a bioreactor

open access: yesBrazilian Archives of Biology and Technology, 2011
The mutant of Pediococcus pentosaceus (SPAm) produced earlier by UV-mutagenesis exhibiting higher dextransucrase activity as compared to wild-type was used. The generated mutant SPAm gave 12.2 mg/ml, a 20% higher dextran than wild-type.
Seema Patel   +4 more
doaj   +1 more source

Update of the list of qualified presumption of safety (QPS) recommended microbiological agents intentionally added to food or feed as notified to EFSA 21: Suitability of taxonomic units notified to EFSA until September 2024

open access: yesEFSA Journal, Volume 23, Issue 1, January 2025.
Abstract The qualified presumption of safety (QPS) process was developed to provide a safety assessment approach for microorganisms intended for use in food or feed chains. In the period covered by this Statement, no new information was found that would change the status of previously recommended QPS taxonomic units (TUs).
EFSA Panel on Biological Hazards (BIOHAZ)   +28 more
wiley   +1 more source

Structural Characterization of Insoluble Dextran Produced by Leuconostoc mesenteroides NRRL B-1149 in the Presence of Maltose

open access: yesFood Technology and Biotechnology, 2011
Leuconostoc mesenteroides NRRL B-1149 is known to produce dextran with 52 % α-(1→6) and 40 % α-(1→3) linkages. Low solubility of dextran in water is associated with the presence of high percentage of α-(1→3) linkages.
Arun Goyal   +5 more
doaj  

Hydroxyapatite: An Eco‐Friendly Material for Enzyme Immobilization

open access: yesChemPlusChem, Volume 89, Issue 8, August 2024.
This minireview provides a literature survey on the use of hydroxyapatite (HAP) as a sustainable and ecofriendly support for enzyme immobilization, a key technology for the design of stable, efficient and reusable biocatalysts. The different immobilization techniques used for obtaining biocatalysts based on HAP and HAP‐composites are considered and ...
Leonardo Gelati   +6 more
wiley   +1 more source

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