Optimization of the recovery of anthocyanins from chokeberry juice pomace by homogenization in acidified water

Maria Cinta Roda-Serrat*, Thalles Allan Andrade, Janus Rindom, Peter Brilner Lund, Birgir Norddahl, Massimiliano Errico

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Abstract: The recovery efficiency of waste valorization processes depends on an interplay of different conditions that are sometimes overlooked. Process optimization by the means of establishing mathematical relations between the process parameters and outputs is a strong tool to identify optimal operating conditions based on experimental data. In this study, the extraction of anthocyanins from chokeberry (Aronia melancocarpa) juice pomace using homogenization in acidified water was selected as a case study for process optimization using response surface methodology. The parameters studied were the citric acid content in the water, the temperature and the liquid–solid ratio. The optimal conditions to maximize both anthocyanin concentration and total anthocyanin content extracted were 1.5 wt% citric acid, 45 °C and 34 g solvent/g fresh pomace. Furthermore, the model developed predicted satisfactorily the overall anthocyanin content and anthocyanin concentration in the extract, as well as the final pH and total dissolved solids. The process optimization performed in this study sets the ground for further process design targeting the production of high-value products from byproducts or biowaste to be used in food ingredients or supplements. Graphic Abstract: [Figure not available: see fulltext.].

Original languageEnglish
JournalWaste and Biomass Valorization
Pages (from-to)1-13
Number of pages13
ISSN1877-2641
DOIs
Publication statusE-pub ahead of print - 20. Jun 2020

Keywords

  • Aronia melanocarpa
  • Bioactive
  • By-product
  • Extraction
  • Polyphenol
  • Valorization

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