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投稿时间:2018-11-26
投稿时间:2018-11-26
中文摘要: 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。
Abstract: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 antidigestion stability.
文章编号:201920006 中图分类号: 文献标志码:
基金项目: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)
作者 | 单位 |
戴梓茹,梁冬萍,秦海琼,张晨晓,王培 | 广西北部湾海洋生物多样性养护重点实验室,广西钦州535011;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,广西钦州535011;钦州学院食品工程学院,广西钦州535011 |
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