Thien T. Le * , Thuy T. Bui , & Ngan N. T. Trinh

* Correspondence: Le Trung Thien (email:

Main Article Content


The study was carried out to compare types of enzymes and to evaluate effects of conditions for hydrolysis of Tra fish flesh scraps. Among the four experimented enzymes including protamex, papain, neutrase, and alcalase, the last one was the most efficient in term of protein recovery yield and hydrolysis degree. The hydrolysis efficiency was at the maximum at conditions of pH 8.0, the temperature 55oC and the rate of enzyme/material 1.0%. At these conditions, the protein recovery yield was over 70%, and hydrolysis degree was over 18%. The results of the research provide a background to apply enzymes to convert Tra fish flesh scraps into a protein hydrolysate to be used as a functional ingredient or to be used in functional foods.

Keywords: Alcalase, Enzymes, Hydrolysis, Tra catfish

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