Results 21 to 30 of about 4,018 (155)

Comparing the xylose reductase/xylitol dehydrogenase and xylose isomerase pathways in arabinose and xylose fermenting Saccharomyces cerevisiae strains

open access: yesBiotechnology for Biofuels, 2008
Background Ethanolic fermentation of lignocellulosic biomass is a sustainable option for the production of bioethanol. This process would greatly benefit from recombinant Saccharomyces cerevisiae strains also able to ferment, besides the hexose sugar ...
Hahn-Hägerdal Bärbel   +2 more
doaj   +1 more source

Research Progress on Physiological Activity and Biosynthesis of D-Tagatose(D-塔格糖的生理活性及生物合成研究进展) [PDF]

open access: yesShipin kexue jishu xuebao, 2023
D-Tagatose is an important rare ketohexose. Its sweetness is 92% of sucrose, and its calories are only one third of sucrose. D-Tagatose was approved as a new raw material for safe food by the America's Food and Drug Administration and China's Health and ...
LI Zijie(李子杰)   +4 more
doaj   +1 more source

Screening and selection of wild strains for L-arabinose isomerase production [PDF]

open access: yesBrazilian Journal of Chemical Engineering, 2013
The majority of L-arabinose isomerases have been isolated by recombinant techniques, but this methodology implies a reduced technological application. For this reason, 29 bacterial strains, some of them previously characterized as L-arabinose isomerase producers, were assayed as L-arabinose fermenting strains by employing conveniently designed culture ...
Manzo, R. M.   +3 more
openaire   +4 more sources

A method for the production of D-tagatose using a recombinant Pichia pastoris strain secreting β-D-galactosidase from Arthrobacter chlorophenolicus and a recombinant L-arabinose isomerase from Arthrobacter sp. 22c

open access: yesMicrobial Cell Factories, 2012
Background D-Tagatose is a natural monosaccharide which can be used as a low-calorie sugar substitute in food, beverages and pharmaceutical products. It is also currently being tested as an anti-diabetic and obesity control drug.
Wanarska Marta, Kur Józef
doaj   +1 more source

Immobilized Trienzymatic System with Enhanced Stabilization for the Biotransformation of Lactose

open access: yesMolecules, 2017
The use of ketohexose isomerases is a powerful tool in lactose whey processing, but these enzymes can be very sensitive and expensive. Development of immobilized/stabilized biocatalysts could be a further option to improve the process.
Pedro Torres, Francisco Batista-Viera
doaj   +1 more source

Cloning of araA Gene Encoding L-Arabinose Isomerase from Marine Geobacillus stearothermophilus Isolated from Tanjung Api, Poso, Indonesia

open access: yesHayati Journal of Biosciences, 2010
L-arabinose isomerase is an enzyme converting D-galactose to D-tagatose. D-tagatose is a potential sweetener-sucrose substitute which has low calorie.
DEWI FITRIANI, BUDI SAKSONO
doaj   +3 more sources

A Vibrio-based microbial platform for accelerated lignocellulosic sugar conversion

open access: yesBiotechnology for Biofuels and Bioproducts, 2022
Background Owing to increasing concerns about climate change and the depletion of fossil fuels, the development of efficient microbial processes for biochemical production from lignocellulosic biomass has been a key issue.
Sunghwa Woo   +8 more
doaj   +1 more source

Merging Biocatalysis and Chemocatalysis in Flow: State‐of‐the‐Art and Future Directions for Sustainable Synthesis

open access: yesAngewandte Chemie, Volume 138, Issue 25, 15 June 2026.
This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis   +2 more
wiley   +2 more sources

Subunit Structure of L-Arabinose Isomerase from Escherichia coli

open access: yesJournal of Biological Chemistry, 1969
Abstract l-Arabinose isomerase, isolated from l-arabinose-induced cultures of Escherichia coli B/r, has a molecular weight of 362,000 and an s020,w of 12.6 x 10-13 sec. Protonation of purified l-arabinose isomerase at pH 2.0 or treatment with 8 m urea results in the dissociation of the native enzyme into subunits which are homogeneous in the ...
J W, Patrick, N, Lee
openaire   +2 more sources

Galactose to tagatose isomerization at moderate temperatures with high conversion and productivity

open access: yesNature Communications, 2019
Production of tagatose, a sugar substitute, by isomerization of galactose suffers from unfavorable enzymatic kinetics, low enzyme stability, and low equilibrium constant.
Josef R. Bober, Nikhil U. Nair
doaj   +1 more source

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