Effect of hydroxypropyl methyl cellulose phthalate coating on digestive stability and intestinal transport of green tea catechins

Autor: Jae-Hwan Chung, Sang-Jun Lee, Jin-Oh Chung, Yu-Jin Oh, Jeong-Ah Hwang, Young-Kyung Kim, Sanghoon Ko, Soon-Mi Shim
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Integrative Medicine Research, Vol 3, Iss 1, Pp 34-37 (2014)
Druh dokumentu: article
ISSN: 2213-4220
DOI: 10.1016/j.imr.2013.11.001
Popis: 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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