OPTIMIZATION OF EXTRACTION OF POLYPHENOLS FROM CHESTNUT WASTE PRETREATED BY OHMIC HEATING USING BOX-BEHNKEN DESIGN
OPTIMIZATION OF EXTRACTION OF POLYPHENOLS FROM PRETREATED CHESTNUT WASTE
Keywords:chestnut peel, extraction, ohmic heating, optimization, polyphenols
Chestnut processing produces a large amount of waste peels, which contain considerable polyphenols. The aim of this research was to optimize the extraction method for phenolic compounds from industrial chestnut peel pretreated by ohmic heating (OH) by using response surface methodology (RSM). Box-Behnken design (BBD) was used to investigate the effects of three independent variables; namely, extraction time, solid to solvent (S/S) ratio, and temperature, on total phenolic content (TPC) and antioxidant capacity (AC). All independent variables influenced the TPC and AC of the peel extracts. The optimum extraction conditions found were 22.02 min, 1/39.70 (w/v), and 60 Â°C for extraction time, S/S ratio, and extraction temperature, respectively, resulting in the highest TPC of 34.83 mg GAE/g dry matter (DM) and AC of 35621.38 mmol ascorbic acid equivalent (AEAC)/100 g DM by DPPH. This study showed that water was highly successful for the extraction of polyphenols from the pretreated chestnut peel.
Copyright (c) 2022 Latin American Applied Research - An international journal
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Once a paper is accepted for publication, the author is assumed to have transferred its copyright to the Publisher. The Publisher will not, however, put any limitation on the personal freedom of the author to use material from the paper in other publications. From September 2019 it is required that authors explicitly sign a copyright release form before their paper gets published. The Author Copyright Release form can be found here