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Corresponding Author(s)

王家星(1994—),女,浙江省海洋开发研究院中级工程师,硕士。E-mail:18868005756@163.com

Abstract

Objective: This study aimed to develop an auric-lowering peptide of skipjack byproducts (SPBp) with Xanthine oxidase (XOD) inhibition activity and improve the utilization rate of byproducts of skipjack. Methods: Based on the response surface methodology, several parameters affecting this process were investigated, including protease types and enzymatic dosages, pH, temperature, time and their interactions on the content of amino-nitrogen, solid content and XOD inhibition activity. Results: The results showed that trypsin was the best protease. The optimal process parameters were as follows: the dosage of the enzyme was 4%, pH 8.0, temperature 55 ℃, time 5 h, solid-liquid ratio 1∶3 (g/mL). Under the control of the optimal conditions, the solid content was 4.12%; XOD inhibition activity was 43.941%, which were all in good agreement with the predicted values. SPBp-XOIP showed strong radical scavenging activity against hydroxyl and DPPH radicals with ED50 values of 6.0 mg/mL and 10.0 mg/mL, respectively. Conclusion: The meat of Skipjack has the potential to prepare XOD inhibitory peptides, which can be used as dietary function factors in antioxidant stress and prevention of hyperuricemia.

Publication Date

4-25-2023

First Page

153

Last Page

160

DOI

10.13652/j.spjx.1003.5788.2022.90252

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