Preparation of barley protein using alkali extraction and acid precipitation method, determination of DPPH free radical scavenging rate, and detection of antioxidant activity of the product. The drying methods of barley protein include freeze-drying and ordinary low-temperature drying at 30¡ãC to maintain high antioxidant activity. Composite protease The obtained enzymatic hydrolyzate has higher antioxidant activity, followed by neutral protease and alkaline protease. The antioxidant capacity of the enzymatic hydrolyzate of barley is much greater than that of barley, and as the mass fraction of active peptides of barley increases, its antioxidant capacity also increases. Enhancement. Comparing the antioxidant activity of enzymatic hydrolysis of barley, barley, corn, and rice, it can be seen that the enzymatic hydrolysis product of barley has better antioxidant activity. The antioxidant activity of barley protein is greatly weakened at the drying temperature of 60¡ãC. .

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Original research was done by Li Cunzhi, Yan Ri’an, Ou Shiyi, Huang Caihuan, Liu Liu, Huang Huahong

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