Identification of antioxidant peptides released from defatted walnut (Juglans Sigillata Dode) meal proteins with pancreatin

被引：99

作者：

Gu, Mu ^{[1
]}

Chen, Hui-Ping ^{[1
]}

Zhao, Mou-Ming ^{[1
]}

Wang, Xi ^{[1
]}

Yang, Bao ^{[2
]}

Ren, Jiao-Yan ^{[1
]}

Su, Guo-Wan ^{[1
]}

机构：

[1] S China Univ Technol, Coll Light Ind & Food Sci, Guangzhou 510641, Guangdong, Peoples R China

[2] Chinese Acad Sci, South China Bot Garden, Key Lab Plant Resource Conservat & Sustainable Ut, Guangzhou 510650, Guangdong, Peoples R China

来源：

LWT-FOOD SCIENCE AND TECHNOLOGY | 2015年 / 60卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Walnut meal; Antioxidant peptides; Cytotoxicity; Radical scavenging activity; Electrospray ionization-tandem mass spectrometry; REGIA L; AMINO-ACIDS; PURIFICATION; CAPACITY; HYDROLYSATE; CHEMISTRY; APOPTOSIS; DIGESTS; EXTRACT; OXYGEN;

D O I：

10.1016/j.lwt.2014.07.052

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Defatted walnut (Juglans Sigillata Dode) meal (DWM) is the main by-product after oil extraction of walnut seed, which contains 40-45% proteins with abundant essential amino acids. In this research, the protein of defatted walnut meal was subjected to enzymatic hydrolysis by pancreatin. The hydrolysate was found to possess excellent antioxidant capacities. Also, high cytoprotective activities against H2O2-induced oxidative damage to PC12 cells were observed, with 83% cell viability at 0.1 mg/mL of peptides, and no cytotoxicity was detected against native PC12 cells. The peptides could scavenge total reactive oxygen species in rat pheochromocytoma cell line. Defatted walnut meal protein hydrolysates (DWMPH) were isolated and purified by gel filtration chromatography and reverse phase high performance liquid chromatography. By electron spray ionization-tandem mass spectrometry (ESI-MS/MS), the chemical structures of fourteen antioxidant peptides from two fractions were identified, and all of them were novel peptides were found from walnut protein hydrolysate. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：213 / 220

页数：8

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