神秘果果皮的抗氧化性

目的]研究神秘果果皮总酚含量与抗氧化性的关系。方法]综合各种数据,选分别取60%乙醇和0.1%HCl为最佳浸泡溶剂和酸度条件,采用2×3因素均匀设计法,时间为0.5～5.0h,温度为30～50℃,研究神秘果的总酚与还原力和DPPH清除率之间的关系。结果]在不同温度与时间条件下,干燥果皮的总酚含量与其抗氧化性相关性不大。基于均匀设计的提取花青素工艺筛选试验表明,在用60%乙醇和0.1%HCl的提取条件下,温度对神秘果果皮的抗氧化性有促进作用,其抗氧化性随温度升高而增大,且1.0h为提取花青素的最佳提取时间。结论]该研究为进一步探究神秘果果皮的抗氧化性提供参考。

Investigation on Oxidation Resistance of Peel in Synsepalum dulcificum Denill

Objective]The study aimed to compare the oxidation resistance of peel in Synsepalum dulcificum and research the relationship between its total phenol content and the oxidation resistance. Method]Based on synthesizing the various data,with 60% ethanol and 0. 1% HCl as the optimum soaking solvent and acid condition resp. ,the uniform design with 2 ×3 factors including time of 0. 5 -5. 0 h and temperature of 30 -50 ℃ was used to study the relation of the total phenol content to the reducing power and DPPH scavenging rate of S. dulcificum. Result]Under different temperature and time,the total phenol content in the dry peel had little correlation to its oxidation resistance. The screening test on the technology of extracting the anthocyanidin based on the uniform design showed that under the condition of extracting the anthocyanidin with 60% ethanol and 0. 1% HCl,the temperature had some promoting effect on the oxidation resistance of peel in S. dulcificum,the oxidation resistance was increased with the rising of the temperature and 1. 0 h was the best time for the extraction of anthocyanidin. Conclusion]This study provided the reference for further exploring the oxidation resistance of peel in S. dulcificum.