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Inhibition of raw starch digestion by one glucoamylase preparation from black Aspergillus at high enzyme concentration

Abstract

Raw starch digestion by glucoamylase I (Ab. G-I) preparation from black Aspergillus was inhibited significantly at relatively high concentration of the enzyme. The properties of this enzyme were studied together with those of another glucoamylase I (Nor. G-I), also from black Aspergillus. The two glucoamylases do not differ so much in their physico-chemical properties such as molecular weight, pH and thermal stability, pH and temperature optimum, substrate specificity, debranching activity, isoelectric point etc. The adsorption rate of both enzymes on raw starch increased by the increase of enzyme concentration. The raw starch digestion rate by adsorbed Ab. G-I, however, was decreased with the increase of concentration of enzyme whereas the same was increased in case of Nor. G-I. The inhibitory effect was weaker at 60 deg. Celcius or above. (Refs. 11).
Authors:
Publication Date:
Sep 01, 1981
Product Type:
Journal Article
Reference Number:
EDB-82-166292
Resource Relation:
Journal Name: Starch/Staerke; (Germany, Federal Republic of); Journal Volume: 33:9
Subject:
59 BASIC BIOLOGICAL SCIENCES; 09 BIOMASS FUELS; AMYLASE; CHEMICAL PROPERTIES; PHYSICAL PROPERTIES; BIOCONVERSION; INHIBITION; ASPERGILLUS; STARCH; CARBOHYDRATES; ENZYMES; FUNGI; GLYCOSYL HYDROLASES; HYDROLASES; O-GLYCOSYL HYDROLASES; ORGANIC COMPOUNDS; PLANTS; POLYSACCHARIDES; REAGENTS; SACCHARIDES; 550700* - Microbiology; 140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
OSTI ID:
6843006
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: STARD
Submitting Site:
HEDB
Size:
Pages: 313-316
Announcement Date:
Jun 01, 1982

Citation Formats

Saka, B C, and Veda, S. Inhibition of raw starch digestion by one glucoamylase preparation from black Aspergillus at high enzyme concentration. Germany: N. p., 1981. Web.
Saka, B C, & Veda, S. Inhibition of raw starch digestion by one glucoamylase preparation from black Aspergillus at high enzyme concentration. Germany.
Saka, B C, and Veda, S. 1981. "Inhibition of raw starch digestion by one glucoamylase preparation from black Aspergillus at high enzyme concentration." Germany.
@misc{etde_6843006,
title = {Inhibition of raw starch digestion by one glucoamylase preparation from black Aspergillus at high enzyme concentration}
author = {Saka, B C, and Veda, S}
abstractNote = {Raw starch digestion by glucoamylase I (Ab. G-I) preparation from black Aspergillus was inhibited significantly at relatively high concentration of the enzyme. The properties of this enzyme were studied together with those of another glucoamylase I (Nor. G-I), also from black Aspergillus. The two glucoamylases do not differ so much in their physico-chemical properties such as molecular weight, pH and thermal stability, pH and temperature optimum, substrate specificity, debranching activity, isoelectric point etc. The adsorption rate of both enzymes on raw starch increased by the increase of enzyme concentration. The raw starch digestion rate by adsorbed Ab. G-I, however, was decreased with the increase of concentration of enzyme whereas the same was increased in case of Nor. G-I. The inhibitory effect was weaker at 60 deg. Celcius or above. (Refs. 11).}
journal = []
volume = {33:9}
journal type = {AC}
place = {Germany}
year = {1981}
month = {Sep}
}