食品科学 ›› 2022, Vol. 43 ›› Issue (16): 135-144.doi: 10.7506/spkx1002-6630-20220320-235

• 食品化学 • 上一篇    下一篇

卵清白蛋白-没食子酸-葡聚糖共聚物对白藜芦醇稳定性和抗氧化性的影响

孟令莉,张晗,侯惠静,张晓燕,雷丹丹,赵培,何雨薇,吴子健   

  1. (1.天津商业大学生物技术与食品科学学院,天津市食品生物技术重点实验室,天津 300134;2.天津职业大学生物与环境工程学院,天津 300410)
  • 出版日期:2022-08-25 发布日期:2022-08-31
  • 基金资助:
    天津市重点研发计划项目(19YFLHSN00080);天津市应用基础与前沿技术研究计划项目(19JCTPJC54600)

Effects of OVA-GA-DEX Conjugates on Stability and Antioxidant Activity of Resveratrol

MENG Lingli, ZHANG Han, HOU Huijing, ZHANG Xiaoyan, LEI Dandan, ZHAO Pei, HE Yuwei, WU Zijian   

  1. (1. Tianjin Key Laboratory of Food Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China;2. College of Biological and Environmental Engineering, Tianjin Vocational Institute, Tianjin 300410, China)
  • Online:2022-08-25 Published:2022-08-31

摘要: 采用碱法接枝和干热美拉德反应制备卵清白蛋白-没食子酸-葡聚糖(ovalbumin-gallic acid-dextran,OVA-GA-DEX)共聚物,并通过与卵清白蛋白-没食子酸(ovalbumin-gallic acid,OVA-GA)和卵清白蛋白-葡聚糖(ovalbumin-dextran,OVA-DEX)的比较,分析其理化性质以及对白藜芦醇稳定性和抗氧化性的影响。结果表明:GA或DEX与OVA共价结合,改变OVA的二级结构组成,并提高了其亲水性和乳化稳定性;3 种共聚物(OVA-GA、OVA-DEX以及OVA-GA-DEX)在Pickering乳液中的粒径分布较均匀,其中OVA-GA-DEX具有更小的平均粒径((85.07±10.74)nm)并显示出其更好的稳定效果;OVA-GA-DEX的包埋有效地保护了白藜芦醇,防止其氧化或降解,并使白藜芦醇具有较高的抗氧化能力。

关键词: 白藜芦醇;卵清白蛋白-没食子酸-葡聚糖共聚物;皮克林乳液;抗氧化性;稳定性

Abstract: Ovalbumin-gallic acid-dextran (OVA-GA-DEX) conjugate was prepared by alkali grafting and dry hot Maillard reaction and its physicochemical properties and effects on the stability and antioxidant activity of resveratrol (RES) were analyzed by comparing with those of ovalbumin-gallic acid (OVA-GA) and ovalbumin-dextran (OVA-DEX). Results showed that covalent binding of GA or DEX with OVA could change the secondary structure compositions of OVA and improve its hydrophilicity and emulsification stability. The particle size distribution of three conjugates (OVA-GA, OVA-DEX and OVA-GA-DEX) in the Pickering emulsion was more uniform. OVA-GA-DEX had a smaller average particle size ((85.07 ± 10.74) nm), suggesting its better stability. The encapsulated OVA-GA-DEX can effectively protect RES from oxidation or degradation, and provide RES with higher antioxidant capacity.

Key words: resveratrol; ovalbumin-gallic acid-dextran conjugate; Pickering emulsion; antioxidant; stability

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