Effect of Ensilaging and Organic Solvent Treatment on Activity of Proteases from Chicken Intestine

Karuppannan, Rathinaraj and Patiram Zituzi, Sakhare and Sachindra, N. M. and Mahendrakar, N. S. (2010) Effect of Ensilaging and Organic Solvent Treatment on Activity of Proteases from Chicken Intestine. Food Bioprocess Technology.

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Abstract

Studies were carried out to assess the extractability of proteins from chicken intestine and to determine the activity of proteases in crude extract. Further, the activity of proteases was evaluated in acid and fermented chicken intestinal silage as well as in organic solventtreated intestinal samples. Extractability of proteins was in the range of 3.85–4.06 mg/ml and was not affected (p≥ 0.05) by the four different extractants, viz., distilled water, phosphate buffer, and 1% potassium chloride with or without 0.1 M Na2EDTA. The specific activity of acidic and alkaline proteases were in the range of 4.78–7.26 and 19.31–24.07 units, respectively, and was not affected (p≥ 0.05) by the type of extractant used. The pH profile for activity showed higher activity in the alkaline pH range. Addition of acid or ingredients for fermentation reduced the extractability of protein significantly (p≤0.05). During storage of silage, the reduction in enzyme activity was higher in acid silage compared with fermented silage. Treatment of chicken intestine with organic solvents enhanced the enzyme activity and higher increase was observed with isopropyl alcohol-treated intestine. During storage of solvent-treated powders up to 3 months, the activity of proteases reduced in all the solvent-treated samples highest being in acetone-treated powder.

Item Type:	Article
Uncontrolled Keywords:	Chicken intestine . Proteases . Ensilaging . Fermentation
Subjects:	600 Technology > 08 Food technology > 28 Meat, Fish & Poultry
Divisions:	Meat Fish and Poultry Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	26 Feb 2010 05:51
Last Modified:	28 Dec 2016 11:14
URI:	http://ir.cftri.res.in/id/eprint/9346

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