VEGETOS: An International Journal of Plant ResearchOnline ISSN: 2229-4473
Print ISSN: 0970-4078

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Rice Bran Stabilization using Papain Enzyme

Rice Bran Stabilization using Papain Enzyme

Attempts were made to utilize papain enzyme for the stabilization of rice bran. Rice bran was treated with different concentrations of papain. Free fatty acid concentration (FFA), an indicator of hydrolytic rancidity, was measuredat different durations of storage. The effect of three factors viz. concenntration of enzyme (mg per 100g of rice bran), duration of nzymatic treatment (min.) and duration of storage (days) was studied on four responses viz. % FFA content, % oil content, % fibre and % protein content of rice bran. Experiments were conducted using Response Surface Methodology. Based on optimization, the recommended concentration was 50 mg papain enzyme per 100 g bran, with 60 min treatment duration and 15 days of storage at 4oC. The predicted value for FFA at 15th day was 9.27%, that of total fat, protein and fibre levels were 18.46, 16.27 and 8.21 % respectively. Key words: Free fatty acid, Hydrolytic rancidity, Lipases, Response Surface Methodology.

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