Research Article Open Access

MICROWAVE-ASSISTED EXTRACTION OF PHENOLIC ANTIOXIDANTS FROM SEMIARID PLANTS

Jorge E. Wong-Paz1, Juan C. Contreras-Esquivel2, Diana Muñiz-Marquez1, Ruth Belmares1, Raul Rodriguez1, Patricia Flores2 and Cristobal N. Aguilar1
  • 1 Department of Food Research, DIA-UAdeC, Universidad Autônoma de Coahuila, 25280, Saltillo, Coahuila, Mexico
  • 2 Coyote Foods Biopolymer and Biotechnology, 25000, Saltillo, Coahuila, Mexico

Abstract

Microwave-Assisted Extraction (MAE) kinetic in three temperatures was investigated for extraction of antioxidant phenolic compounds from Jatropha dioica, Flourensia cernua, Eucalyptus camaldulensis and Turnera diffusa which are plants of semiarid regions of Mexico. The two-site kinetic model and saturation simple equation were used to describe the experimental data. The fit of the data demonstrated that saturation simple equation was better and could explain the data with a slight loss of goodness of fit. The results showed that MAE optimum conditions were extraction temperature of 60°C and extraction time in the range from 1 to 6 min. The MAE was more efficient than the conventional Heat Reflux Extraction (HRE). Maximal antioxidant potential was observed in E. camaldulensis extracts. Interestingly differences in phenolic composition and antioxidant activity were observed in the extracts obtained by MAE and HRE for all plants used. Quercetin and catechin were found to be the predominant phenolic compounds. The MAE procedure resulted in suitable alternative to obtain bioactive phenolic compounds from semiarid plants due to this technology is higher efficient than conventional methods increasing yield in shorter times.

American Journal of Agricultural and Biological Sciences
Volume 9 No. 3, 2014, 299-310

DOI: https://doi.org/10.3844/ajabssp.2014.299.310

Submitted On: 18 November 2013 Published On: 22 March 2014

How to Cite: Wong-Paz, J. E., Contreras-Esquivel, J. C., Muñiz-Marquez, D., Belmares, R., Rodriguez, R., Flores, P. & Aguilar, C. N. (2014). MICROWAVE-ASSISTED EXTRACTION OF PHENOLIC ANTIOXIDANTS FROM SEMIARID PLANTS. American Journal of Agricultural and Biological Sciences, 9(3), 299-310. https://doi.org/10.3844/ajabssp.2014.299.310

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Keywords

  • Plant-Extracts
  • Polyphenols
  • Antioxidants
  • Green Chemistry
  • Modeling Kinetics