The Correlation Between In Vitro Antioxidant Activity and Immunomodulatory Activity of Enzymatic Hydrolysates from Selenium-Enriched Rice Protein

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• 作者：Yong Fang ; Xi Chen ; Peizhu Luo ; Fei Pei ; Benard Muinde Kimatu ; Kunlun Liu ; Mengjia Du ; Weifen Qiu and Qiuhui Hu
• 刊名：Journal of Food Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：82
• 期：2
• 页码：517-522
• 全文大小：380K
• ISSN：1750-3841

文摘

The antioxidant and immunomodulatory activities of selenium-enriched rice protein hydrolysates (Se-PH) were evaluated by a cellular antioxidant activity test and macrophage proliferation and phagocytosis assays, respectively. The results showed that trypsin hydrolysate provided the highest proliferation rate of 60.91% at a concentration of 100 μg/mL. Moreover, a remarkable rise in the phagocytosis rates for trypsin hydrolysate (64.1%) and pepsin–trypsin hydrolysate (54.5%) was observed when the sample concentrations were increased to 50 μg/mL. A positive correlation was found between the phagocytic ability of macrophages and both the selenium concentration and the degree of hydrolysis of Se-PH, and the correlation coefficients R obtained were 0.792 and 0.930 (P < 0.05), respectively. The capacity of Se-PH to inhibit the oxidation of dichlorodihydrofluorescein had a significant negative correlation with the phagocytic ability of macrophages (R = –0.840, P < 0.05). In conclusion, a positive correlation was found between the antioxidant activity and the immunomodulatory activity of Se-PH, which could be used as potential functional food additives for improving human health.