摘要
提取咖啡壳中的酚类物质,进行表征分析及酚羟基含量的测定,并对提取物进行抗氧化性研究。采用红外,GPC,核磁对提取出的样品进行表征。采用DPPH,ABTS,FRAP三种方法对样品的抗氧化性进行测定。结果表明:咖啡壳中多酚类物质的最佳提取工艺条件为乙醇体积分数为60%。样品酚羟基含量为4.392 mmol/g。抗氧化性研究表明,DPPH中样品抗氧化性略好于BHT,ABTS中样品抗氧化性明显高于BHT,FRAP中样品抗氧化能力与维生素C相差不大。
henolic compounds in coffee shell, characterization and determination of the phenolic hydroxyl contentoxidation resistance of the sample. F-FIR, GPCNMR to the sample, hree methods were used to determine the oxidationresistance. The results show that the best extraction technology conditions 60% ethanol. Phenolic hydroxyl content of thesample 4. 392 mmol/g. Oxidation resistance study showed that the antioxidant activity of sample was slightly better thanBHT in DPPH, the antioxidant activity of sample was significantly higher than BHT in ABTS, the antioxidant activity ofsample was similar to vitamin C in FRAP.
出处
《广州化工》
CAS
2017年第10期64-66,125,共4页
GuangZhou Chemical Industry
基金
东北林业大学大学生院级创新训练计划项目(CL1201627)
关键词
咖啡壳
多酚
抗氧化性
coffee shell
polyphenols
resistance to oxidation
