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Effect of Storage on the Changes in Cathepsin D Activity, Nucleotide Contents, Peptide Profiles and Muscle Ultrastructure of Aristichthys Nobilis, R


Citation

Bakar, Jamilah (1993) Effect of Storage on the Changes in Cathepsin D Activity, Nucleotide Contents, Peptide Profiles and Muscle Ultrastructure of Aristichthys Nobilis, R. PhD thesis, Universiti Pertanian Malaysia.

Abstract

Cathepsin D from the muscle of bighead carp (Aristichthys no bilis, R.)was extracted ,purified and partially characterized . The extract ion and purification o f the enzyme was achieved byautolysis of the muscle,acetone precipitation, gelfiltrat ion on Sephadex G100-120 and on ionexchange carboxymethyl cellulose (CMC)column chromatography . It had a molecular weight(m.w)of 37,500-38,000 dalton (D) with a pH optimum at 3.2 and temperature optimum of 50°C. Myofibril was also optimally digested at pH3.2. The purified enzyme had a single major peptideband on sodiumdodecyl sulfate polyacrylamide gelelectrophoresis SDS-PAGE )and was completely inhibited by pepstatin .


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Additional Metadata

Item Type: Thesis (PhD)
Subject: Bighead carp
Subject: Animal extracts
Subject: Peptides
Call Number: FSMB 1993 1
Chairman Supervisor: Yu Swee Yean, PhD
Divisions: Faculty of Food Science and Technology
Depositing User: Nurul Hayatie Hashim
Date Deposited: 11 Nov 2010 08:09
Last Modified: 24 Oct 2012 07:39
URI: http://psasir.upm.edu.my/id/eprint/8357
Statistic Details: View Download Statistic

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