Antioxidant and Glycemic Regulatory Properties Potential of Different Maturity Stages of Leaf of Ceylon Cinnamon (Cinnamomum zeylanicum Blume) In Vitro

Table 5

Dose response relationship of different maturity stages of leaf of Ceylon cinnamon for ABTS radical scavenging activity.

Leaf extract	(% Inhibition)
	Concentration (μg/mL)
	15.62	31.25	62.50	125	250	IC50
Immature	28.50 ± 2.17	67.39 ± 4.18	87.59 ± 2.29	96.25 ± 0.23	96.28 ± 0.39	45.28 ± 1.29
Partly mature	22.13 ± 2.54	59.42 ± 7.40	83.55 ± 5.47	94.81 ± 2.02	98.16 ± 0.71	28.51 ± 2.87
	1.95	3.90	7.81	15.62	31.25	IC50
Mature	5.59 ± 4.69	16.27 ± 2.10	46.32 ± 2.25	54.58 ± 3.56	96.43 ± 1.73	15.09 ± 0.51

Data represented as mean ± SEM (n = 4 each for leaf extracts and n = 3 for Trolox); values in the column superscripted by different letters are significantly different at p < 0.05; immature, partly mature, mature leaf extracts, and Trolox r²: 0.92, 0.94, 0.94, and 1.00, respectively; IC₅₀: Trolox 6.36 ± 0.03 μg/mL.