Results 11 to 20 of about 1,138 (192)

Engineering and application of LacI mutants with stringent expressions [PDF]

open access: yesMicrobial Biotechnology
Optimal transcriptional regulatory circuits are expected to exhibit stringent control, maintaining silence in the absence of inducers while exhibiting a broad induction dynamic range upon the addition of effectors.
Jieyuan Wu   +9 more
doaj   +3 more sources

One-Pot Enzymatic Bioconversion of Native Whey for the Simultaneous Production of Galacto-Oligosaccharides and Antioxidant Peptides [PDF]

open access: yesFoods
The integrated valorization of whey into multifunctional food ingredients is constrained by sequential processing routes and the need for purified lactose and protein fractions.
Andrés Córdova-Suárez   +11 more
doaj   +2 more sources

A New β-Galactosidase from the Antarctic Bacterium Alteromonas sp. ANT48 and Its Potential in Formation of Prebiotic Galacto-Oligosaccharides [PDF]

open access: yesMarine Drugs, 2019
As an important medical enzyme, β-galactosidases catalyze transgalactosylation to form prebiotic Galacto-Oligosaccharides (GOS) that assist in improving the effect of intestinal flora on human health.
Shangyong Li, Xiangjie Zhu, Mengxin Xing
doaj   +2 more sources

Galacto-oligosaccharide production by Lactobacillus delbrueckii ssp. bulgaricus whole cells and lysates [PDF]

open access: yesJDS Communications
β-Galactosidase is currently applied in foods for reduction of lactose but can also be used for its transgalactosylation activity to synthesize galacto-oligosaccharides (GOS) as prebiotics.
Giselle K.P. Guron   +4 more
doaj   +2 more sources

Microwave-Assisted Synthesis of Glycoconjugates by Transgalactosylation with Recombinant Thermostable β-Glycosidase from Pyrococcus [PDF]

open access: yesInternational Journal of Molecular Sciences, 2016
The potential of the hyperthermophilic β-glycosidase from Pyrococcus woesei (DSM 3773) for the synthesis of glycosides under microwave irradiation (MWI) at low temperatures was investigated. Transgalactosylation reactions with β-N-acetyl-d-glucosamine as acceptor substrate (GlcNAc-linker-tBoc) under thermal heating (TH, 85 °C) and under MWI at 100 and ...
Dorothee Merker, Lothar Elling
exaly   +4 more sources

Study of the transgalactosylation activity of ß-galactosidase from a new strain Kluyveromyces lactis 3 [PDF]

open access: yesJournal of BioScience and Biotechnology, 2012
Beta-galactosidase (EC.3.2.1.23) is an important enzyme industrially used for the hydrolysis of lactose from milk and milk whey for several applications.
ILIA ILIEV, TONKA VASILEVA
doaj   +2 more sources

Rapid Transgalactosylation Towards Lactulose Synthesis in a Small-scale Enzymatic Membrane Reactor (EMR)

open access: yesChemical Engineering Transactions, 2014
A small-scale EMR system was developed with a reliable control design giving the possibility for continuous operation at constant flux (constant hydraulic residence time, tHRT).
A.B. Sitanggang, A. Drews, M. Kraume
doaj   +2 more sources

Enzymatic Building-Block Synthesis for Solid-Phase Automated Glycan Assembly. [PDF]

open access: yesAngew Chem Int Ed Engl, 2020
In a chemoenzymatic approach to oligosaccharide synthesis, the scalability potential of enzymatic synthesis was exploited for the preparative synthesis of a relevant N‐acetyllactosamine disaccharide building block. This disaccharide was then applied successfully to the automated synthesis of a target oligosaccharide using the glycan synthesizer ...
Marchesi A   +7 more
europepmc   +3 more sources

A GH42 β‑Galactosidase from the Human Isolate Bifidobacterium breve DSM 20213: Biochemical and Transgalactosylation Properties Reveal the Potential for Galacto-oligosaccharides Synthesis [PDF]

open access: yesACS Omega
Khanh-Trang Vu-Le   +9 more
doaj   +2 more sources

Site-directed mutation of β-galactosidase from Streptococcus thermophilus for galactooligosaccharide-enriched yogurt making

open access: yesJournal of Dairy Science, 2022
: β-Galactosidase is one of the most important enzymes used in dairy processing. It converts lactose into glucose and galactose, and also catalyzes galactose to form galactooligosaccharides (GOS), so-called prebiotics.
J.C. Zhao   +5 more
doaj   +1 more source

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