Extracción de compuestos con actividad antioxidante de frutos de guayaba cultivada en Vélez-Santander, Colombia

Química Nova

Diana-chavely Restrepo-sánchez¹  Carlos-eduardo Narváez-cuenca¹  Luz-patricia Restrepo-sánchez¹ 

[1] ,Universidad Nacional de Colombia Facultad de Ciencias Departamento de QuímicaBogotá,Colombia

关键词: FRAP;    ABTS;    total phenolic compounds;   

DOI  :  10.1590/S0100-40422009000600030

来源: SciELO

【 摘 要 】

The effects of the extraction system (50% methanol or 50% methanol pH 2.0), volume/material ratio, temperature, time and extractions with 70% acetone were evaluated in the total phenolic compounds (TPC) extraction and in antioxidant activities (AA) using FRAP and ABTS assays in guava fruit. The best yield was obtained when 0.5 g of guava were extracted first with 20 mL 50% methanol and then four times with 20 mL 70% acetone during 30 min at 50 °C. Among the different trials guava fruit exhibited high levels of AA as well as TPC.

【 授权许可】

CC BY-NC   
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