Solvents effect on active chemicals and activities of antioxidant, anti-α-glucosidase and inhibit effect on smooth muscle contraction of isolated rat jejunum of Chaenomeles speciosa

Solvents effect of water, methanol aqueous, and ethanol aqueous on the active compositions (TFc, TPc, TTc, TCc, TPs and contents of eleven selected compounds) in Chaenomeles speciosa were studied, as well as effects on antioxidant activity, anti-α-glucosidase activity, and inhibit effect on Ach induced smooth muscle contraction of isolated rat jejunum. The results indicate that compositions and activities of extracts prepared with different solvents vary, and methanol, 60% methanol, 40% methanol, 20% methanol and 60% ethanol would be good choices for the industrial production of Chaenomeles speciosa extracts. Water extract displays the highest inhibit activity on the contraction of smooth muscle of isolated rat jejunum, and the result also indicates that condensed tannin is responsible for the inhibit activity. In summary, our study presents the solvents effect on chemical compositions and biological activities of Chaenomeles speciosa, and gives an insight into the potential application of Chaenomeles speciosa.