小麦胚芽蛋白糖基化产物抗氧化特性研究
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(德州职业技术学院,山东 德州 253034)

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牛秋云(1984—),女,德州职业技术学院讲师,硕士。E-mail:niuqiuyun2008@163.com

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德州市市级研发计划项目(编号:2020KJC-TZ-039-1250)


Study on antioxidant properties of glycosylated products of wheat germ protein
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(Dezhou Vocational and Technical College, Dezhou, Shandong 253034, China)

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    摘要:

    目的:探究小麦胚芽蛋白糖基化产物的抗氧化特性。方法:采用超声波辅助湿热法制备小麦胚芽蛋白(WGP)与葡萄糖(Glucose)的糖基化产物(WGP-G),通过测定不同超声时间(10,20,30,40,50,60 min)、不同反应温度(70,80,90 ℃)下WGP-G的褐变程度、接枝度、还原能力、羟自由基清除能力、超氧阴离子自由基、DPPH自由基清除能力和ABTS+自由基清除能力等指标,综合评价糖基化反应对WGP抗氧化能力的影响。结果:WGP-G褐变度随超声时间和反应温度的不断增大而增大,接枝度、还原能力、羟自由基清除能力、超氧阴离子自由基清除能力、DPPH自由基清除能力和ABTS+自由基清除能力均随反应温度的不断增大而增大,但随超声时间的延长呈先增大后减小趋势。结论:超声时间和反应温度均能影响WGP-G的抗氧化特性。

    Abstract:

    Objective: This study aimed to investigate the antioxidant properties of wheat germ protein glycosylation product. Methods: The glycation product (WGP-G) of wheat germ protein (WGP) and glucose was prepared by ultrasonic assisted moist heat method. Different ultrasonic time (10, 20, 30, 40, 50 and 60 min) and reaction temperature (70, 80 and 90 ℃) were measured. The browning degree, grafting degree, reducing power, hydroxyl radical scavenging capacity, superoxide anion radical scavenging capacity, DPPH radical scavenging capacity and ABTS+ radical scavenging capacity of WGP-G at 90 ℃ were evaluated comprehensively. Results: The browning degree of WGP-G increased with the increase of ultrasonic time and reaction temperature. The grafting degree, reducing power, hydroxyl radical scavenging ability, superoxide anion radical scavenging, DPPH radical scavenging ability and ABTS+ radical scavenging ability all increased with the increase of reaction temperature, but showed a trend of first increasing and then decreasing with the extension of ultrasonic time. Conclusion: The antioxidant properties of WGP-G were affected by ultrasonic time and reaction temperature.

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牛秋云.小麦胚芽蛋白糖基化产物抗氧化特性研究[J].食品与机械,2023,39(5):32-37.
NIU Qiu-yun. Study on antioxidant properties of glycosylated products of wheat germ protein[J]. Food & Machinery,2023,39(5):32-37.

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  • 收稿日期:2022-08-16
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  • 在线发布日期: 2023-06-09
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