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Arabinoxylans Gels as Lycopene Carriers: in vitro Degradation by Colonic Bacteria

  • A. Rascón-Chu (a1), A. L. Martínez-López (a2), C. Berlanga-Reyes (a2), E. Carvajal-Millan (a2), A. C. Campa-Mada (a2), A. A. Gardea (a3) and A. Orozco-Avitia (a3)...

Abstract

Arabinoxylans are polysaccharides constituted of a linear backbone of xylose in which arabinose substituents are attached, some ferulic acid esterifies arabinose. Arabinoxylan can form covalent gels by oxidative coupling of ferulic acid. Arabinoxylan gels could have potential applications for colon-specific biomolecules delivery due to their macroporous structure, and their aqueous environment and their dietary fiber nature. Lycopene has received increasing attention for its possible role in the prevention of colon cancer. It has been previously reported that arabinoxylan gels could be formed in presence of lycopene with no detriment on the lycopene antioxidant activity. The objective of this research was to investigate the in vitro degradation of arabinoxylan gels (AX gels) by two human colon bacterial species (Bacteroides ovatus and Bifidobacterium longum). Bacterial counts (CFU ml-1) and metabolic heat production (p) followed a similar pattern with a high response during the first 24 h at 37 °C. A regression model related CFU ml-1 and p (r2= 0.98). These results show that AX gels could be carriers for lycopene delivery in colon due structure degradation by gut microbiota.

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Keywords

Arabinoxylans Gels as Lycopene Carriers: in vitro Degradation by Colonic Bacteria

  • A. Rascón-Chu (a1), A. L. Martínez-López (a2), C. Berlanga-Reyes (a2), E. Carvajal-Millan (a2), A. C. Campa-Mada (a2), A. A. Gardea (a3) and A. Orozco-Avitia (a3)...

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