Abstract
This article mainly focused on the hypoglycemic effects of green tea flower polysaccharides (TFPS) and their possible mechanisms about regulating concentration of blood glucose. An alloxan-induced Sprague–Dawley (SD) rat model was used to observe the change in blood glucose. Inhibition rate of α-amylase and α-glucosidase, and antioxidant ability of TFPS were also tested to explain the possible mechanism. The results showed that TFPS could reduce blood glucose in alloxan-treated rats. TFPS had strong hydrogen donor ability and could protect cell membrane from overoxidation. TFPS could also inhibit the activity of α-amylase and α-glucosidase in vitro. But the inhibition of α-amylase by TFPS was comparatively low. It suggested that TFPS could protect against rapid blood glucose rise in alloxan-induced SD rats. The possible mechanism was that TFPS not only could donate hydrogen to protect SD rats from oxidative damage, but also inhibit digestive enzymes activities.
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