Purification and Identification of Antioxidant Peptides from Hydrolysates of Large Yellow Croaker (Pseudosciaena crocea) Scales
2020
Chen, Wenwei | Hong, Yao | Jia, Zhenbao | Huang, Guangrong
HighlightsThree antioxidant peptides were efficiently obtained from large yellow croaker scales.The molecular weights of the three peptides were 879.4, 952.5, and 1070.4 Da, respectively.The large yellow croaker scales’ hydrolysates are a good source of natural antioxidants.Abstract. The scales of large yellow croaker () are typically discarded as waste during processing. In this study, three peptides with high antioxidant properties were purified from the scales via ultrafiltration and column chromatography. Through matrix-assisted laser desorption ionization/time-of-flight mass spectrometry, the sequences of the three peptides were identified as Gln-Arg-Pro-Pro-Glu-Pro-Arg (M1N4-1, 879.4 Da), Glu-Lys-Val-Trp-Lys-Tyr-Cys-Asp (M1N4-2, 1070.4 Da), and Val-Gly-Leu-Pro-Gly-Leu-Ser-Gly-Pro-Val-Gly (M2N2-1, 952.5 Da). The antioxidant activity of the peptides was directly determined through 1-diphenyl-2-picrylhydrazyl scavenging assay. Results suggested that large yellow croaker scales are a good source of natural antioxidants. Keywords: Antioxidant peptide, Hydrolysis, Pseudosciaena crocea, Scale.
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