Abstract

Marcello Fidaleo¹, Roberto Lavecchia² and Antonio Zuorro²*

DOI : http://dx.doi.org/10.13005/ojc/320201

Bioactive polyphenols were extracted from the peel fraction of bilberry processing waste using aqueous ethanol as solvent. A response surface methodology was used to evaluate the effects of liquid-to-solid ratio (R), solvent composition (C), extraction time (E) and temperature (T) on the extraction yield. The following optimal conditions were determined: R = 30 mL/g, C = 57%, E = 160 min, T = 40 °C. Phenolic extracts with a polyphenol content of 83.75 ± 4.16 mg GAE/g and an antioxidant activity of 7.64 ± 0.43 mmol TE/g were also produced using a batch extractor operating under optimal process conditions.

Bilberry; Polyphenols; Extraction; Antioxidant activity; Agro-industrial wastes

[ View HTML Full Text]