Split Crystallization during Debranching of Maltodextrins at High Concentration by Isoamylase
- 29 June 2004
- journal article
- Published by American Chemical Society (ACS) in Biomacromolecules
- Vol. 5 (5), 1792-1798
- https://doi.org/10.1021/bm049881i
Abstract
Debranching and crystallization occurring during the enzymatic treatment of 25% (w/v) aqueous solutions of maltodextrins by isoamylase at 52 °C were studied. The morphology as well as the crystal and molecular structures of the precipitates formed at different stages of the reaction were characterized. Two types of resulting products, differing in terms of structure and morphology, were evidenced. A loose B-type network, containing linear and branched chains of highest molecular weight, was mainly formed during the first 12 h of reaction, whereas aggregates of A-type lamellar crystals, made of short linear chains, were predominantly obtained between 12 and 48 h. The aggregation behavior as a function of temperature and molecular weight distribution of such substrates was discussed and compared to that of related starch products.Keywords
This publication has 25 references indexed in Scilit:
- Network Formation in Dilute Amylose and Amylopectin Studied by TEMMacromolecules, 2000
- Effect of heat-moisture treatment on the structure and physicochemical properties of cereal, legume, and tuber starchesCarbohydrate Research, 1994
- ‘B’ to ‘A’ type phase transition in short amylose chainsCarbohydrate Polymers, 1993
- Hydrolysis of A- and B-type crystalline polymorphs of starch by α-amylase, β-amylase and glucoamylase 1Carbohydrate Polymers, 1992
- Microstructure of amylose gelsCarbohydrate Polymers, 1992
- Recent Advances in Knowledge of Starch StructureStarch ‐ Stärke, 1991
- Rheology of solutions of rodlike polymers: theory and comparison with experimentsMacromolecules, 1989
- The double-helical nature of the crystalline part of A-starchJournal of Molecular Biology, 1988
- Properties of Starches Isolated from Western Samoan Breadfruit Using a Traditional MethodStarch ‐ Stärke, 1988
- Single crystals of amylose with a low degree of polymerizationCarbohydrate Polymers, 1984