These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Does kappa-carrageenan thermoreversible gelation affect β-carotene oxidative degradation and bioaccessibility in o/w emulsions?
    Author: Soukoulis C, Tsevdou M, Yonekura L, Cambier S, Taoukis PS, Hoffmann L.
    Journal: Carbohydr Polym; 2017 Jul 01; 167():259-269. PubMed ID: 28433161.
    Abstract:
    In the present work oil-in-gel (o/g) emulsions comprising 0.4-1% w/w κ-carrageenan in the absence and presence of Ca2+ (20mM) were investigated for their ability to hamper the oxidative degradation under isothermal (5, 20 and 37°C) ambient air storage conditions and promote the in vitro bioaccessibility of β-carotene. The mechanical and structure conformational aspects of the o/g emulsions throughout in vitro digestion were measured by means of oscillatory rheology and optical microscopy. Although the addition of κ-carrageenan reduced by more than 50% (from 0.85 to 0.40day-1) the β-carotene oxidative degradation rates, only minor differences were detected in terms of gelation method (ca. 0.42 and 0.39day-1 for ionotropic and coldset systems) and biopolymer concentration (0.38-0.42day-1). The bioaccessibility of β-carotene was significantly higher in coldset o/g emulsions (ca. 43%) compared to the ionically mediated ones (ca. 36%). With the exception of 0.4% κ-carrageenan containing o/g emulsions (55.4 and 49.7% for control and 0.4% κ-carrageenan respectively), the β-carotene bioaccessibility was significantly reduced with the increase in κ-carrageenan concentration (ranging from 34 to 38.9%).
    [Abstract] [Full Text] [Related] [New Search]