Back to Search Start Over

Heat and Light Stability of Pumpkin-Based Carotenoids in a Photosensitive Food: A Carotenoid-Coloured Beverage

Heat and Light Stability of Pumpkin-Based Carotenoids in a Photosensitive Food: A Carotenoid-Coloured Beverage

Authors :
Sharmaine Atencio
Sarah H. E. Verkempinck
Kai Reineke
Marc Hendrickx
Ann Van Loey
Source :
Foods, Vol 11, Iss 485, p 485 (2022), Foods; Volume 11; Issue 3; Pages: 485
Publication Year :
2022
Publisher :
Zenodo, 2022.

Abstract

This study aimed to evaluate carotenoid degradation kinetics in a beverage coloured with pumpkin juice concentrate during storage at dark and illuminated conditions at four temperatures (10, 20, 35 and 45 °C). Carotenoids were quantified by HPLC-DAD, and kinetic parameters for carotenoid degradation were estimated by one-step nonlinear regression analysis. During dark storage, degradation kinetics was modelled by fractional conversion (all-trans-β-carotene) and zero-order equations (all-trans-antheraxanthin, all-trans-lutein, all-trans-violaxanthin and all-trans-neoxanthin). Storage of samples in a climatic chamber with intense light intensity (1875–3000 lux) accelerated the carotenoid losses. At illuminated conditions, degradation followed a first-order (all-trans-lutein, all-trans-violaxanthin and all-trans-neoxanthin) and fractional conversion model (all-trans-β-carotene and all-trans-antheraxanthin). Carotenoid degradation followed an Arrhenius temperature-dependency, with Ea values lower than 50 kJ/mol. Degradation was shown to be mainly by oxidative reactions. Packaging under minimal oxygen conditions, use of antioxidants (e.g., ascorbic acid), and proper choice of light sources at retail shelves may be considered to optimize the pigment retention in a carotenoid-coloured beverage during storage.

Details

Database :
OpenAIRE
Journal :
Foods, Vol 11, Iss 485, p 485 (2022), Foods; Volume 11; Issue 3; Pages: 485
Accession number :
edsair.doi.dedup.....c12a83905d66d0bb181cae1b2dc4bb80
Full Text :
https://doi.org/10.5281/zenodo.5986980