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J Food Drug Anal. 2018 Jul;26(3):973-984. doi: 10.1016/j.jfda.2017.11.009. Epub 2017 Dec 20.

Lactic acid bacteria-fermented product of green tea and Houttuynia cordata leaves exerts anti-adipogenic and anti-obesity effects.

Author information

1
Ph.D. Program of Nutrition and Food Sciences, Fu Jen Catholic University, Taipei, Taiwan; Continuing Education School, National Taitung Junior College, Taitung, Taiwan.
2
Department of Biochemical Science and Technology, National Taiwan University, Taipei, Taiwan; R&D Division, Sunway Biotech Co., Ltd., Taipei, Taiwan. Electronic address: tmpan@ntu.edu.tw.
3
Ph.D. Program of Nutrition and Food Sciences, Fu Jen Catholic University, Taipei, Taiwan; Department of Food Science, Fu Jen Catholic University, Taipei, Taiwan. Electronic address: tytsai@mail.fju.edu.tw.

Abstract

Obesity is associated with higher risks of developing diabetes and cardiovascular disease. Green tea, rich in polyphenolic compounds such as epigallocatechin gallate (EGCG) and epigallocatechin (EGC), has been shown to display anti-obesity effects. Houttuynia cordata leaves have also been shown to exhibit anti-obesity effects due to their chlorogenic acid content. Lactic acid bacteria are able to increase the production of polyphenolic compounds. This study aims to develop a novel anti-obesity fermentation product by combining H. cordata leaf tea with green tea, using Lactobacillus paracasei subsp. paracasei NTU 101 (NTU 101) for fermentation due to the advantages of bioconverting the polyphenolic compounds. The regulation of adipogenesis factors and the anti-obesity effect of the NTU 101-fermented tea were evaluated in an in vitro 3T3-L1 pre-adipocyte model and an in vivo obese rat model, respectively. The results show that the NTU 101-fermented tea, which contained higher EGCG, EGC, and chlorogenic acid levels than unfermented tea, was able to inhibit the lipogenesis of mature 3T3-L1 adipocytes by the stimulation of lipolysis. Furthermore, the body weight gain, body fat pad, and feeding efficiency of obese rats, induced with a high fat diet, were decreased by the oral administration of NTU 101-fermented tea. The significant anti-obesity effect was probably due to lipolysis. However, NTU 101 bacteria cells and EGCG may also act as functional ingredients to contribute to the anti-obesity effects of NTU 101-fermented products.

KEYWORDS:

Anti-adipogenesis; Anti-obesity; Green tea; Houttuynia cordata leaf; Lactic acid bacteria

PMID:
29976415
DOI:
10.1016/j.jfda.2017.11.009
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