Methods for the enzymatic modification of steviol glycosides, modified steviol glycosides obtainable thereby, and the use thereof as sweeteners
申请人:Rijksuniversiteit Groningen
公开号:US10731195B2
公开(公告)日:2020-08-04
The present invention relates generally to the production of steviol glycosides. Provided is a method for enzymatically providing a modified steviol glycoside, comprising incubating a steviol glycoside substrate in the presence of sucrose and the glucansucrase GTF180 of Lactobacillus reuteri strain 180, or a mutant thereof having the desired transglycosylation activity. Also provided are modified steviol glycosides obtainable by a method of the invention, and the use thereof as low-glycemic sweetener.
Methods for the Enzymatic Modification of Steviol Glycosides, Modified Steviol Glycosides Obtainable Thereby, and the Use Thereof as Sweeteners
申请人:Rijksuniversiteit Groningen
公开号:US20180044708A1
公开(公告)日:2018-02-15
The present invention relates generally to the production of steviol glycosides. Provided is a method for enzymatically providing a modified steviol glycoside, comprising incubating a steviol glycoside substrate in A the presence of sucrose and the glucansucrase GTF180 of
Lactobacillus reuteri
strain 180, or a mutant thereof having the desired transglycosylation activity. Also provided are modified steviol glycosides obtainable by a method of the invention, and the use thereof as low-glycemic sweetener.
Rational design of an improved transglucosylase for production of the rare sugar nigerose
作者:Jorick Franceus、Shari Dhaene、Hannes Decadt、Judith Vandepitte、Jurgen Caroen、Johan Van der Eycken、Koen Beerens、Tom Desmet
DOI:10.1039/c9cc01587f
日期:——
The sucrose phosphorylase from Bifidobacterium adolescentis (BaSP) can be used as a transglucosylase for the production of rare sugars. We designed variants of BaSP for the efficient synthesis of nigerose from sucrose and glucose, thereby adding to the inventory of rare sugars that can conveniently be produced from bulk sugars.
hydrolysis of six disaccharides having D-glucose units, i.e., cellobiose, laminarabiose, gentiobiose, maltose, nigerose, and isomaltose. β- d -Glucosidase from sweet almonds was used to hydrolyze the three β- d -glucosidic-linked disaccharides, and the three α- d -glucosidic-linked disaccharides were hydrolyzed by maltase from bakers yeast. The results showed that the rate of hydrolysis depends strongly on