摘要
采用DPPH自由基清除能力(DPPH法)和氧自由基吸收能力(oxgen radical absorbance capacity,ORAC法)研究酸杨桃罗汉果复合饮料的抗氧化活性,并探讨温度、pH值、紫外线和NaCl等因素对其抗氧化活性的影响,了解其加工过程的稳定性,并通过模拟胃肠道消化,初步探讨其在体内的抗氧化活性变化规律。结果表明:酸杨桃罗汉果复合饮料具有较强的抗氧化活性,ORAC值和DPPH值分别为335.61(μmol TE/L)和113.96(μmol TE/L);温度、NaCl对复合饮料抗氧化活性没有显著影响,pH值和紫外线照射时间的改变对其抗氧化活性有减弱作用,但在pH值为6~8、紫外照射时间<45 min时,复合饮料仍保持较强的抗氧化活性;胃肠道消化后,ORAC值和DPPH值显著下降,但仍具有较强的抗氧化能力,说明复合饮料抗消化稳定性较好。
The DPPH free radical scavenging ability(DPPH method)and oxygen radical absorption capacity(ORAC method)were used to studied the antioxidant activity of the acid carambola and momordica grosvenori compound beverage and the effect of antioxidant activities by temperature,pH,ultraviolet light and NaCl were discussed.Besides,the change rules of antioxidant activity in vivo were discussed by understand the stability of the processing and simulating gastrointestinal digestion.The results showed that the acid carambola momordica grosvenori compound beverage had strong antioxidant activity,ORAC and DPPH values were 335.61(μmol TE/L)and 113.96(μmol TE/L),respectively.Temperature and NaCl had no significant effect on the antioxidant activity of the compound beverage.The changed of pH and ultraviolet irradiation time had a weakening effect on its antioxidant activity,but the compound beverage still maintains strong antioxidant activity at pH 6-8 and UV irradiation time<45 min;gastrointestinal digestion after in vitro digestion ORAC and DPPH values decreased significantly,but still had strong antioxidant capacity,indicating that the compound beverage has good anti-digestion stability.
作者
戴梓茹
梁冬萍
秦海琼
张晨晓
王培
DAI Zi-ru;LIANG Dong-ping;QIN Hai-qiong;ZHANG Chen-xiao;WANG Pei(Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation,Qinzhou 535011,Guangxi,China;Guangxi Colleges and Universities Key Laboratory of Development and High-value Utilization of Beibu Gulf Seafood Resources,Qinzhou 535011,Guangxi,China;College of Food Engineering,Qinzhou University,Qinzhou 535011,Guangxi,China)
出处
《食品研究与开发》
CAS
北大核心
2019年第20期31-35,共5页
Food Research and Development
基金
广西北部湾海洋生物多样性养护重点实验室自主项目(2019ZB06)
广西高校北部湾特色海产品资源开发与高值化利用重点实验室项目(2016ZA02)
大学生创新创业训练计划项目(201811607051)
关键词
酸杨桃
罗汉果
复合饮料
抗氧化
稳定性
carambola fruit
momordica grosvenori
compound beverage
antioxidation
stability
