2582023年第9期中国食品添加剂ChinaFoodAdditives分析测试光山油茶饼粕蛋白水解物的制备及功能活性分析朱静,吕静,邢淑婕,陈亚蓝,李亚钦,陈龙*(信阳农林学院食品学院,河南省大别山特色食物资源综合利用工程技术研究中心,信阳464000)摘要:从光山油茶饼粕中提取蛋白,以油茶粕多肽含量为指标,通过酶法生产油茶饼粕蛋白水解物,并对其功能活性进行验证。采用单因素试验优化酶解时间、加酶量和底物浓度,利用DesignExpert8.0.6统计分析软件得到油茶粕多肽含量随加酶量、底物浓度和酶切时间变化的标准回归模型,采用响应面分析得到最佳酶解条件,并做验证试验。最佳水解条件为:采用胃蛋白酶处理油茶粕,在加酶量6950U/g、底物浓度2.9%、时间为4.1h时为最佳酶解条件,油茶粕多肽含量为(6.20±0.15)µg/mL,通过检测发现,油茶粕蛋白多肽对羟自由基的清除能力为93.89%,对DPPH和ABTS+自由基的清除能力分别为61.29%和37.17%,对油脂吸附能力为0.414g/g,0.20µg/mL的多肽胆酸盐结合能力为0.9µg/mL,说明油茶粕蛋白水解物具有较好的抗氧化和降脂能力。关键词:油茶籽粕多肽;响应面分析;抗氧化活性;降脂能力中图分类号:TS202.3文献标识码:A文章编号:1006-2513(2023)09-0258-08doi:10.19804/j.issn1006-2513.2023.09.034PreparationandfunctionalactivityanalysisofproteinhydrolysatefromGuangshanCamelliaoleiferaoilextractionresiduesZHUJing,LÜJing,XINGShujie,CHENYalan,LIYaqin,CHENLong*(CollegeofFoodScience,XinyangAgricultureandForestryUniversity,EngineeringTechnologyResearchCenterforComprehensiveUtilizationofCharacteristicFoodResourcesinDabieMountain,Xinyang464000)Abstract:ProteinwasextractedfromGuangshanCamelliaoleiferaoilextractionresidues,anditshydrolysatewaspreparedbyenzymaticmethodusingpolypeptideastheindex.Thefunctionalactivityoftheproteinhydrolysatewastested.Thesinglefactordesignwasusedtooptimizetheenzymehydrolysistime,theenzymeamountandtheconcentrationofthesubstrate.ThestandardregressionmodelwasobtainedusingtheDesignExpert8.0.6statisticalanalysissoftware.Theoptimizedenzymehydrolysisconditionsbyresponsesurfaceanalysiswereasfollows:Camelliaoleiferamealtreatedwithpepsin,enzymeamount6950U/g,substrateconcentration2.9%,andreactiont...