MOISTURE SORPTION OF GELATIN POWDER AND COLLAGEN-FIBERS

被引：3
作者：
BOKI, K
KAWASAKI, N
MINAMI, K
机构：
[1] Faculty of Pharmaceutical Sciences, Kinki University, Higashi-Osaka, Osaka 577
来源：
YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN | 1994年 / 114卷 / 09期
关键词：
MOISTURE SORPTION; GELATIN; COLLAGEN; HEAT; SORPTION; ENTROPY;
D O I：
10.1248/yakushi1947.114.9_704
中图分类号：
R9 [药学];
学科分类号：
1007 ;
摘要：
Moisture sorption properties of gelatin powder and collagen fibers were investigated on the basis of the moisture sorption isotherm, the differential heat of moisture sorption, the decrease in entropy of moisture sorption and the parameter constants of the applicable isotherm equation. The amount of moisture sorbed on collagen fibers was larger than that on gelatin powder. The water molecules were absorbed on gelatin itself rather than on the active sites of gelatin. They were adsorbed on the polar groups of constitutive amino acids at amounts of moisture sorbed up to one or two monolayers and then were absorbed into collagen fibers at higher monolayers. They were kept loosely in gelatin and tightly in collagen. The structural stability of collagen to moisture was higher than that of gelatin.
引用
收藏
页码：704 / 709
页数：6
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