Bioactive compounds, pigments, antioxidant activity and antimicrobial activity of yellow prickly pear peels

Luís M. G. Castro, Elisabete M. C. Alexandre*, Manuela Pintado, Jorge A. Saraiva

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The main goal of this research was to study the effects of pressure, extraction time and ethanol concentration on antioxidant activity, total phenolics, flavonoids, anthocyanins, carotenoids and betalains compounds extraction from yellow prickly pear peels. A Box–Behnken design and Response Surface Methodology were used to evaluate the effects and estimate the optimum extraction conditions. Antimicrobial activity was evaluated against Escherichia coli and Listeria innocua. Ethanol concentration was the variable that showed the highest effect on extraction yields but high-pressure increased extraction yields between 6% and 17%. Models showed good fitting and adequacy to the experimental data and the high correlation of models indicated that it can be employed to optimise extraction conditions. The experimental and predicted values differed
Original languageEnglish
Pages (from-to)1225-1231
Number of pages7
JournalInternational Journal of Food Science and Technology
Volume54
Issue number4
DOIs
Publication statusPublished - 4 Jan 2019

Keywords

  • Antibacterial activity
  • Antioxidant activity
  • Bioactive compounds
  • High-pressure extraction
  • Prickly pear peels

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