Evaluation of antioxidant activity of extracts of banana inflorescences (Musa cavendishii)

被引:25
|
作者
Schmidt, Michele M. [1 ]
Prestes, Rosa C. [1 ]
Kubota, Ernesto H. [1 ]
Scapin, Gabrielle [1 ]
Mazutti, Marcio A. [2 ]
机构
[1] Univ Fed Santa Maria, Dept Sci & Food Technol, BR-97105900 Santa Maria, RS, Brazil
[2] Univ Fed Santa Maria, Ctr Technol, Dept Chem Engn, BR-97105900 Santa Maria, RS, Brazil
关键词
banana residue; phenolics; flavonoids; natural antioxidant; ultrasound; residuos de platanos; compuestos fenolicos; flavonoides; antioxidantes naturales; ultrasonido; ULTRASOUND-ASSISTED EXTRACTION; ORIGANUM-MAJORANA L; PHENOLIC-COMPOUNDS; OPTIMIZATION; ANTHRAQUINONES; FRUITS;
D O I
10.1080/19476337.2015.1007532
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
This study evaluated the content of phenolic compounds and flavonoids and the antioxidant potential of the banana inflorescence extract from the species Musa cavendishii as well as investigated the effects of extraction conditions (conventional and ultrasound) on obtaining these compounds. The extracts showed high contents of phenolics and flavonoids and potential as an antioxidant agent. The best results were found under the following extraction conditions: temperature 60 degrees C, ethanol concentration 50%, time 30minutes, and extraction using stirring, without the use of ultrasound. The total phenolic content was 1690mg equivalent of gallic acid/100g of the dry sample. Total flavonoids were 354.90mg equivalent of rutin/100g of the dry sample and IC50 (inhibitory concentration of the sample required to reduce 50% of DPPH (2,2-diphenyl-1-picrylhydrazyl)) of 0.31mg/ml. The banana inflorescence showed potential as a source of antioxidant compounds for industrial application besides adding value to waste generated in banana production. Este estudio evaluo el contenido de compuestos fenolicos y flavonoides y el potencial antioxidante de la inflorescencia del platanero de la especie Musa cavendishii, tambien como los efectos de las condiciones de extraccion (convencional y ultrasonido) en la obtencion de estos compuestos. Los extractos tuvieron alto contenido de compuestos fenolicos y flavonoides totales, y potencial como agente antioxidante. Se encontro los mejores resultados para las siguientes condiciones de extraccion: temperatura 60 degrees C, concentracion de etanol de 50% y un tiempo de 30minutos con extraccion bajo agitacion, sin el uso de ultrasonido. El contenido de fenolicos totales fue 1690.00mg equivalentes de acido galico/100g de la muestra seca, el de flavonoides totales fue 354.90mg equivalentes de rutina/100g de muestra seca y IC50 (inhibitoria concentracion de muestra requerida para reducir en 50% la concentracion inicial de DPPH) de 0.31mg/mL. La inflorescencia del platanero mostro ser una fuente potencial de compuestos antioxidantes con posible aplicacion industrial, que da valor a los desechos generados en la produccion del platano.
引用
收藏
页码:498 / 505
页数:8
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