Enzymolysis Technology Optimization for Production of Antioxidant Peptides from Goat Milk Casein

Shu, Guowei; Wang, Zhuo; Chen, Li; Zhang, Qian; Xin, Ni

doi:10.1515/aucft-2017-0006

Abstract

Antioxidant peptides can inhibit lipid peroxidation and scavenging free radicals, maintain the balance of free radicals, and against a variety of diseases. Response surface methodology was used to optimize process conditions for producing antioxidative peptides from goat’s milk casein hydrolysate with Alcalase. The results suggested that the optimal process parameters were: temperature at 62.5°C, pH 8.9, E/S ration at 2.5%, substrate concentration at 4.4% and hydrolysis time was 173min). Metal-chelating effect, superoxide anion radical scavenging activity and 1, 1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity were shown to be 87.21±0.88%, 49.18±1.42% and 69.07±1.26% respectively under the optimal condition. The actual and predicated value were closely which indicated the optimized data fit well to model and the optimized parameters are reliable.

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Enzymolysis Technology Optimization for Production of Antioxidant Peptides from Goat Milk Casein

Abstract

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