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Effect of hydroxypropyl methyl cellulose phthalate coating on digestive stability and intestinal transport of green
Jae-Hwan Chung1, Sang-Jun Lee2, Jin-Oh Chung2
1Department of Food Science and Technology and Carbohydrate Bioproduct Research Center, Sejong University, Seoul, Korea.
Background:
The purpose of this study was to investigate the effect of hydroxypropyl methyl cellulose phthalate (HPMCP) coating on the digestive stability and intestinal transport of green tea catechins (GTCs).
Methods:
Two types of HPMCP coating were prepared: one type with size smaller than 500 μm (S-HPMCP) and the other with size larger than 500 μm (L-HPMCP). An in vitro gastrointestinal model system coupled with Caco-2 cells was used for estimating the bioavailability of GTCs. Ultraperformance liquid chromatography with a photodiode array detector was performed to analyze GTCs.
Results:
The digestive stability of GTCs was enhanced up to 33.73% and 35.28% for S-HPMCP and L-HPMCP, respectively. Intestinal transport of the GTCs was increased to 22.98% and 23.23% for S-HPMCP and L-HPMCP, respectively. Overall, the bioavailability of GTCs increased by 4.08 and 11.71 times for S-HPMCP and L-HPMCP, respectively.
Conclusion:
The results of this study confirm that coating with HPMCP could be a way to improve the digestive stability and intestinal transport of GTCs.
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