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(a) In vitro α-amylase inhibitory activity of petroleum ether, methanol, and acetone extracts of Turbinaria ornata. Absorbance was measured at 540 nm. (b) In vitro α-glucosidase inhibitory activity of petroleum ether, methanol, and acetone extracts of Turbinaria ornata, acarbose is used as positive control and absorbance was measured at 405 nm. Values are means ± SD (n = 3) (a P < 0.0001 considered significant).
