TYROSINASE-MEDIATED QUINONE TANNING OF CHITINOUS MATERIALS

被引：53

作者：

MUZZARELLI, RAA ^{[1
]}

ILARI, P ^{[1
]}

XIA, WS ^{[1
]}

PINOTTI, M ^{[1
]}

TOMASETTI, M ^{[1
]}

机构：

[1] UNIV ANCONA,DEPT MECH,I-60100 ANCONA,ITALY

来源：

CARBOHYDRATE POLYMERS | 1994年 / 24卷 / 04期

关键词：

D O I：

10.1016/0144-8617(94)90074-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Stable and self-sustaining gels were obtained from tyrosine glucan (a modified chitosan synthesized with 4-hydroxyphenylpyruvic acid) in the presence of tyrosinase. Similar gels were obtained from 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde and 3,4-dihydroxybenzaldehyde: all of them were hydrolyzed by lysozyme, lipase and papain. Microcapsules were similarly obtained by introducing tyrosinase in a water-in-oil emulsion containing tyrosine glucan in the water phase. No cross-linking was observed for chitosan derivatives of vanillin, syringaldehyde and salicylaldehyde. Collagen-chitosan-tannin mixtures were also studied under the catalytic action of tyrosinase: partially crystalline, hard, mechanically resistant and scarcely wettable materials were obtained upon drying. By contrast, products obtained from albumin, pseudocollagen and gelatin, in the presence of a number of phenols and chitosan under comparable conditions, were brittle.

引用

页码：295 / 300

页数：6

共 13 条

[1] COMPARISON OF BLACK CORAL SKELETON AND INSECT CUTICLE BY A COMBINATION OF C-13 NMR AND CHEMICAL-ANALYSES [J].