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Natural Antioxidant Activity and Compounds Content from Wastes of Euterpe edulis Berries

Author

Listed:
  • Beatriz Frasao
  • Marion Costa
  • Bruna Rodrigues
  • Bruno Lima
  • Carlos Conte-Junior

Abstract

The Euterpe edulis (Juçara) is native to Brazil, which berries and wastes present high antioxidant content. Therefore, in this study, microwave-assisted extraction (MAE) was investigated for antioxidant compounds extraction from E. edulis waste and maximized antioxidant activities using response surface methodology coupled with a central composite design. Three factors were observed- microwave power (400/500/600 W), exposition time (30/60/90 sec) and ethanol concentration solvent (40/60/80%). The extracts were characterized by determination of total phenolic (TPC), flavonoids (TFC), monomeric anthocyanins (TAC), tannins content (TTC), and in vitro antioxidant assay (AA%). The yield of TPC, TFC, TAC, and TTC varied at 595.43-2171.34 mg GAE.100 g DM-1, 137.36-251.24 mg QE.100 g DM-1, 179.32-354.38 mg C-3-GE.100 g DM-1 and 0.23-1.00 µg TAE.100 g DM-1, respectively. The optimal MAE parameters for TPC was microwave power 668.18 W, exposition time 110.45 s and aqueous ethanol concentration 93.64%, for TFC same parameters observed; though for TAC the different parameters were 532.28 W, and for TTC 9.55 s. However, for antioxidant activity, the parameters were 668.18 W, 110.45 s time and 64.41% of aqueous ethanol solvent. Therefore, this methodology was successfully applied for optimal extraction of total phenolics, flavonoids, monomeric anthocyanins and tannins from juçara waste and obtain optimal antioxidant activity.

Suggested Citation

  • Beatriz Frasao & Marion Costa & Bruna Rodrigues & Bruno Lima & Carlos Conte-Junior, 2017. "Natural Antioxidant Activity and Compounds Content from Wastes of Euterpe edulis Berries," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 9(3), pages 178-178, February.
    • Handle: RePEc:ibn:jasjnl:v:9:y:2017:i:3:p:178
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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