Studies on α-amylase induced degradation of binary polymeric blends of crosslinked starch and pectin

被引：6

作者：

Bajpai, A. K. ^{[1
]}

Shrivastava, Jyoti ^{[1
]}

机构：

[1] Govt Autonomous Sci Coll, Dept Chem, Bose Mem Res Lab, Jabalpur 482001, MP, India

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 2007年 / 18卷 / 05期

关键词：

D O I：

10.1007/s10856-006-0003-3

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A blend matrix of crosslinked starch and pectin was prepared and characterized by infra-red (IR) spectroscopy, differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). The prepared blends were investigated kinetically for water sorption studies and alpha-amylase induced degradation adopting a gravimetric procedure. Based on the experimental findings, a plausible mechanism including both diffusion and surface enhanced degradation was suggested and degradation profiles were interpreted. The influence of various factors such as chemical architecture of the blend, pH and temperature of alpha-amylase solution were examined for the swelling and degradation kinetics of crosslinked starch-pectin blends. The effect of concentration of enzyme solution was also studied on the degradation profile of the blends. A correlation was established between the extent of degradation and water imbibing capacity of the degrading blends.

引用

页码：765 / 777

页数：13

共 49 条

[1]

AIMUHAMMEDOVA GB, 1984, FRUNZI ILIM, V131

[2]

ALIM SAM, 1993, BIOMATERIALS, V14, P648

[3] PHYSICOCHEMICAL ASPECTS OF DRUG RELEASE .10. INVESTIGATION OF THE APPLICABILITY OF THE CUBE ROOT LAW FOR CHARACTERIZATION OF THE DISSOLUTION RATE OF FINE PARTICULATE MATERIALS [J].

ANDERBERG, EK ;

NYSTROM, C .

INTERNATIONAL JOURNAL OF PHARMACEUTICS, 1990, 62 (2-3) :143-151

[4] Enzymatic degradation of starch-based thermoplastic compounds used in protheses:: identification of the degradation products in solution [J].

Araújo, MA ;

Cunha, AM ;

Mota, M .

BIOMATERIALS, 2004, 25 (13) :2687-2693

[5] Immobilization of α-amylase in vinyl-polymer-based interpenetrating polymer networks [J].

Bajpai, AK ;

Bhanu, S .

COLLOID AND POLYMER SCIENCE, 2003, 282 (01) :76-83

[6] Water sorption behaviour of highly swelling (carboxy methylcellulose-g-polyacrylamide) hydrogels and release of potassium nitrate as agrochemical [J].

Bajpai, AK ;

Giri, A .

CARBOHYDRATE POLYMERS, 2003, 53 (03) :271-279

[7] Enhanced water sorption of a semi-interpenetrating polymer network (IPN) of poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(ethylene glycol) (PEG) [J].

Bajpai, AK ;

Shrivastava, M .

JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 2002, 39 (07) :667-692

[8]

BREZA V, 1993, LIK SPRAVA, V8, P4

[9]

CHISTENSEN SH, 1985, FOOD HYDROCOLLOIDS, V3, P205

[10]

Clayton AB, 1997, POLYM INT, V42, P45, DOI 10.1002/(SICI)1097-0126(199701)42:1<45::AID-PI658>3.0.CO

← 1 2 3 4 5 →