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Optimization of microwave-assisted extraction (MAE) of coriander phenolic antioxidants - response surface methodology approach.
Zekovic, Zoran; Vladic, Jelena; Vidovic, Senka; Adamovic, Dusan; Pavlic, Branimir.
Afiliación
  • Zekovic Z; Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000, Novi Sad, Serbia.
  • Vladic J; Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000, Novi Sad, Serbia.
  • Vidovic S; Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000, Novi Sad, Serbia.
  • Adamovic D; Institute of Field and Vegetable Crops, Maksima Gorkog 30, 21000, Novi Sad, Serbia.
  • Pavlic B; Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000, Novi Sad, Serbia.
J Sci Food Agric ; 96(13): 4613-22, 2016 Oct.
Article en En | MEDLINE | ID: mdl-26916516
ABSTRACT

BACKGROUND:

Microwave-assisted extraction (MAE) of polyphenols from coriander seeds was optimized by simultaneous maximization of total phenolic (TP) and total flavonoid (TF) yields, as well as maximized antioxidant activity determined by 1,1-diphenyl-2-picrylhydrazyl and reducing power assays. Box-Behnken experimental design with response surface methodology (RSM) was used for optimization of MAE. Extraction time (X1 , 15-35 min), ethanol concentration (X2 , 50-90% w/w) and irradiation power (X3 , 400-800 W) were investigated as independent variables. Experimentally obtained values of investigated responses were fitted to a second-order polynomial model, and multiple regression analysis and analysis of variance were used to determine fitness of the model and optimal conditions.

RESULTS:

The optimal MAE conditions for simultaneous maximization of polyphenol yield and increased antioxidant activity were an extraction time of 19 min, an ethanol concentration of 63% and an irradiation power of 570 W, while predicted values of TP, TF, IC50 and EC50 at optimal MAE conditions were 311.23 mg gallic acid equivalent per 100 g dry weight (DW), 213.66 mg catechin equivalent per 100 g DW, 0.0315 mg mL(-1) and 0.1311 mg mL(-1) respectively.

CONCLUSION:

RSM was successfully used for multi-response optimization of coriander seed polyphenols. Comparison of optimized MAE with conventional extraction techniques confirmed that MAE provides significantly higher polyphenol yields and extracts with increased antioxidant activity. © 2016 Society of Chemical Industry.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Fenoles / Semillas / Extractos Vegetales / Coriandrum / Irradiación de Alimentos / Modelos Químicos / Antioxidantes Tipo de estudio: Prognostic_studies País/Región como asunto: Europa Idioma: En Revista: J Sci Food Agric Año: 2016 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Fenoles / Semillas / Extractos Vegetales / Coriandrum / Irradiación de Alimentos / Modelos Químicos / Antioxidantes Tipo de estudio: Prognostic_studies País/Región como asunto: Europa Idioma: En Revista: J Sci Food Agric Año: 2016 Tipo del documento: Article