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Chemistry and Industry of Forest Products ›› 2024, Vol. 44 ›› Issue (2): 27-32.doi: 10.3969/j.issn.0253-2417.2024.02.004

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Preparation of Hydrolysates from Ginkgo biloba Seed Protein Isolate and Their Antioxidant Activity

Xiang WANG1,2,3, Caihong ZHANG1, Jianxin JIANG2, Pujun XIE1, Lixin HUANG1,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; Key Lab.of Biomass Energy and Material, Jiangsu Province; Key Lab.of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Nanjing 210042, China
    2. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
    3. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
  • Received:2023-02-15 Online:2024-04-28 Published:2024-04-23
  • Contact: Lixin HUANG E-mail:l_x_huang@163.com

Abstract:

Ginkgo biloba seed protein isolate(GBSPI) was hydrolyzed by alcalase, bromelain, and Aspergillus oryzae protease, and the antioxidant activity of the hydrolysates was evaluated through in vitro DPPH radical, hydroxyl radical, and superoxide anion radical scavenging experiments. The results showed that the yields of hydrolysates by alcalase, bromelain, and Aspergillus oryzae protease were 93.60%, 60.00% and 46.80%, with degrees of hydrolysis were 13.76%, 6.28% and 5.55%, respectively. The hydrolysates from three enzymes exhibited good inhibitory effects on DPPH radical, hydroxyl radical, and superoxide anion radical. Among them, the hydrolysate from alcalase showed the strongest antioxidant activity, with IC50 values of 5.29 g/L for DPPH radical, 0.35 g/L for hydroxyl radical, and 7.01 g/L for superoxide anion radical, respectively.

Key words: Ginkgo biloba seed, hydrolysate, hydrolysis degree, antioxidant activity

CLC Number: