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- Title
Kinetic modelling of the solid–liquid extraction process of polyphenolic compounds from apple pomace: influence of solvent composition and temperature.
- Authors
Hobbi, Parinaz; Okoro, Oseweuba Valentine; Delporte, Christine; Alimoradi, Houman; Podstawczyk, Daria; Nie, Lei; Bernaerts, Katrien V.; Shavandi, Amin
- Abstract
This study aims to assess kinetic modelling of the solid–liquid extraction process of total polyphenolic compounds (TPC) from apple pomace (AP). In this regard, we investigated the effects of temperature and solvent (i.e. water, ethanol, and acetone) on TPC extraction over various periods. The highest TPC yield of 11.1 ± 0.49 mg gallic acid equivalent (GAE)/g db (dry basis) was achieved with a mixture of 65% acetone–35% water (v/v) at 60 °C. The kinetics of the solvent-based TPC extraction processes were assessed via first-order and second-order kinetic models, with an associated investigation of the kinetic parameters and rate constants, saturation concentrations, and activation energies. The second-order kinetic model was sufficient to describe the extraction mechanism of TPC from AP. This study provides an understanding of the mass transfer mechanism involved in the polyphenolic compound extraction process, thus facilitating future large-scale design, optimization, and process control to valorize pomace waste.
- Subjects
GALLIC acid; SOLVENTS; MASS transfer; TEMPERATURE effect; ACTIVATION energy; LIQUID-liquid extraction
- Publication
Bioresources & Bioprocessing, 2021, Vol 8, Issue 1, p1
- ISSN
2197-4365
- Publication type
Article
- DOI
10.1186/s40643-021-00465-4