Química Nova | |
Extracción de compuestos con actividad antioxidante de frutos de guayaba cultivada en Vélez-Santander, Colombia | |
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
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
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RO202005130062886ZK.pdf | 306KB | download |