Polygalacturonase treatment affects carotenoid absorption from veggie juice

Jianing Liu, Jinfeng Bi*, Xuan Liu, Dazhi Liu, Jian Lyu, Meng Liu, Ruud Verkerk, Matthijs Dekker, Vincenzo Fogliano

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)


The present study was conducted to investigate the effects of polygalacturonase (PG) treatment on carotenoid absorption upon digestion of HPH-treated combined peach and carrot juice (CJ) with or without the presence of lipids. Results showed that PG treatment reduced median particle diameter (D50) and viscosity of CJ, and increased total carotenoid bioaccessibility by 41%. In the presence of emulsion, the bioaccessibility of carotenoids was higher and it was not significantly affected by PG treatment. Xanthophylls (lutein and zeaxanthin) had higher bioaccessibility than the more lipophilic carotenes (β-carotene and α-carotene); also, uptake in Caco-2 cells and transport of lutein and zeaxanthin were higher than for β-carotene and α-carotene. Individual carotenoids bioaccessibility was negatively correlated with their transport. All together data showed digestion and absorption processes were two independent processes: factors improving carotenoid bioaccessibility did not necessarily affect their bioavailability.

Original languageEnglish
Article number135748
Number of pages10
JournalFood Chemistry
Publication statusPublished - 30 Jul 2023


  • Caco-2 cells
  • Carotenoid absorption
  • Carotenoid bioaccessibility
  • Emulsion
  • Pectin


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