Abstract
The purpose of this study was to explore the antioxidant activity in vivo of dual-enzyme hydrolysates obtained from defatted walnut, and to purify and identify it. The walnut protein hydrolysates (WPH) were obtained through two-step enzymatic hydrolysis of alkaline protease and trypsin. The effects of WPH on the oxidative stress-related biochemical indexes of d-galactose-treated mice were investigated. Next, WPH was passed through a Sephadex G-25 gel chromatography, anion exchange chromatography and Sephadex G-15 gel chromatography. Subsequently, peptides in the high antioxidant activity fraction were identified by RP-nano-HPLC–MS/MS. Finally, 14 potential peptides of length 11 AAs to 21 AAs with antioxidant activity were identified from WPH.
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This work was supported by the National Natural Science Foundation of China under Grant [No. 31801568]; the Natural Science Foundation of Tianjin city of China under Grant [No. 18JCQNJC79300].
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Jia, Q., Yuan, JF., Liu, HP. et al. Purification and identification of dual-enzyme hydrolysates obtained from defatted walnut and its antioxidant effects on d-galactose-induced aging mice. Food Measure 15, 1034–1043 (2021). https://doi.org/10.1007/s11694-020-00702-y
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DOI: https://doi.org/10.1007/s11694-020-00702-y