Bioaccessibility of Polyphenols from Plant-Processing Byproducts of Black Carrot (Daucus carota L.)

Senem Kamiloglu, Esra Capanoglu*, Fatma Damla Bilen, Gerard Bryan Gonzales, Charlotte Grootaert, Tom Van De Wiele, John Van Camp

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

71 Citations (Scopus)

Abstract

Plant-processing byproducts of black carrot represent an important disposal problem for the industry; however, they are also promising sources of polyphenols, especially anthocyanins. The present study focused on the changes in polyphenols from black carrot, peel, and pomace during in vitro gastrointestinal digestion. Total phenolic content (TPC), total monomeric anthocyanin content (TMAC), and total antioxidant capacity (TAC) were determined using spectrophotometric methods, whereas identification and quantification of polyphenols were carried out using UPLC-ESI-MSE and HPLC-DAD, respectively. TPC, TMAC, and TAC significantly decreased (23-82%) as a result of in vitro gastrointestinal digestion. Nevertheless, the amount of pomace anthocyanins released at all stages of in vitro gastrointestinal digestion was higher than black carrot anthocyanins, suggesting that pomace may be a better source of bioaccessible anthocyanins. Overall, the current study highlighted black carrot byproducts as substantial sources of polyphenols, which may be used to enrich food products.

Original languageEnglish
Pages (from-to)2450-2458
Number of pages9
JournalJournal of Agricultural and Food Chemistry
Volume64
Issue number12
DOIs
Publication statusPublished - 30 Mar 2016

Bibliographical note

Publisher Copyright:
© 2015 American Chemical Society.

Keywords

  • anthocyanins
  • antioxidant capacity
  • black carrot
  • Daucus carota L.
  • HPLC
  • in vitro gastrointestinal digestion
  • peel
  • phenolics
  • pomace
  • SCFA

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