Alginate as immobilization material: I. Correlation between chemical and physical properties of alginate gel beads
作者:
A. Martinsen,
G. Skjåk‐Bræk,
O. Smidsrød,
期刊:
Biotechnology and Bioengineering
(WILEY Available online 1989)
卷期:
Volume 33,
issue 1
页码: 79-89
ISSN:0006-3592
年代: 1989
DOI:10.1002/bit.260330111
出版商: Wiley Subscription Services, Inc., A Wiley Company
数据来源: WILEY
摘要:
AbstractCalcium alginate gel beads were prepared from a range of well characterized alginates. The physical properties of beads depended strongly on the composition, sequential structure, and molecular size of the polymers. Beads with the highest mechanical strength, lowest shrinkage, best stability towards monovalent cations, and highest porosity were made from alginate with a content ofL‐guluronic acid higher than 70% and an average length of the G‐blocks higher than 15. For these “high G” alginates the critical overlap intrinsic viscosities have been determined, and for molecular weight higher than 2.4 × 105, the gel strength was independent of the molecula
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