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首页> 外文期刊>Food Science & Nutrition >Study to find the best extraction solvent for use with guava leaves (Psidium guajava L.) for high antioxidant efficacy
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Study to find the best extraction solvent for use with guava leaves (Psidium guajava L.) for high antioxidant efficacy

机译：研究寻找与番石榴叶（Psidium guajava L.）一起使用的最佳提取溶剂，以提高抗氧化功效

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AbstractThe effects of guava leaves extracted using solvents of water, ethanol, methanol, and different concentrations of hydroethanolic solvents on phenolic compounds and flavonoids, and antioxidant properties have been investigated. The antioxidant capability was assessed based on 2,2-diphenyl-1-picrylhydrazyl radical and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) radical-scavenging abilities, reducing power, and nitric oxide- and nitrate-scavenging activities. The results demonstrated that the antioxidant ability of guava leaf extracts has a strong relationship with phenolic compound content rather than flavonoid content. Phenolic compound content of water extracted guava leaves was higher compared to pure ethanol and methanol extracts. However, phenolic compound content extracted using hydroethanolic solvent was higher than water, whereas 50% hydroethanolic was observed to be the most effective solvent showing high antioxidant ability.
机译：摘要研究了用水，乙醇，甲醇和不同浓度的氢乙醇溶剂提取的番石榴叶对酚类化合物和黄酮类化合物的抗氧化性能。根据2,2-二苯基-1-吡啶并肼基和2,2'-叠氮基双-（3-乙基苯并噻唑啉-6-磺酸）清除自由基的能力，还原能力以及一氧化氮和硝酸盐评估抗氧化能力。清理活动。结果表明番石榴叶提取物的抗氧化能力与酚类化合物含量而不是类黄酮含量有很强的关系。与纯乙醇和甲醇提取物相比，水提取的番石榴叶中的酚类化合物含量更高。然而，使用氢乙醇溶剂萃取的酚类化合物含量高于水，而观察到50％氢乙醇是显示出高抗氧化能力的最有效溶剂。

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