Enzymatic synthesis, isolation, and analysis of novel alpha- and beta-galactosyl-cycloisomalto-octaoses.
Carbohydr Res
; 305(3-4): 393-400, 1997 Dec.
Article
em En
| MEDLINE
| ID: mdl-9648258
ABSTRACT
Novel branched cycloisomalto-octaoses (CI8s) were enzymatically synthesized by transgalactosylation with alpha-galactosidase from coffee bean and beta-galactosidase preparations from Penicillium multicolor and Bacillus circulans, using melibiose and lactose as donor substrates, and CI8 which is a cyclic homogeneous oligosaccharide composed of eight glucose units bound by alpha-(1-->6)-linkages, as an acceptor. alpha-Galactosyl-CI8s and beta-galactosyl-CI8s obtained were isolated and purified by HPLC. Their structures were elucidated by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDITOFMS) and NMR spectroscopy.
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Base de dados:
MEDLINE
Assunto principal:
Alfa-Galactosidase
/
Ciclodextrinas
/
Gama-Ciclodextrinas
/
Galactosídeos
Idioma:
En
Revista:
Carbohydr Res
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Japão