期刊
FOOD & FUNCTION
卷 6, 期 5, 页码 1539-1546出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4fo01025f
关键词
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资金
- National Science Council [NSC 103-2330-B-040-017, NSC 102-2313-B-040-005]
Type 2 diabetes is mainly induced by environmental factors such as being overweight, decreased physical activity and inbalanced energy metabolism, such as pancreatic beta-cell dysfunction and peripheral insulin resistance. Acarbose, a microbial carbohydrate and an alpha-glucosidase inhibitor, is currently a useful agent for attenuating type 2 diabetes. However, it is usually accompanied by many side effects, such as abdominal distention, flatulence, diarrhea and meteorism. These side effects may be caused by its strong inhibition of alpha-amylase, leading to the accumulation of several undigested carbohydrates. The bacteria residing in the colon can further ferment the undigested carbohydrate to release gas. Finding a new alpha-glucosidase inhibitor with a low inhibitory effect on alpha-amylase is highly anticipated. In this report we describe a group of carbohydrates found in pu-erh tea polysaccharide (PTPS) that can inhibit alpha-glucosidase but have less of an inhibitory effect on alpha-amylase. The preliminary experiments on mice indicate that PTPS might be better than acarbose at suppressing blood glucose after oral administration of a carbohydrate diet; it is recommended that further clinical trials are required in type 2 diabetes in future studies.
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