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

Table 4

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

Leaf extract	(% Inhibition)
	Concentration (μg/mL)
	125	250	500	1000	2000	IC50 (μg/mL)
Immature	15.82 ± 0.46	26.22 ± 0.27	47.31 ± 0.57	61.66 ± 0.51	72.98 ± 0.56	525.18 ± 10.04
Partly mature	16.08 ± 0.58	30.26 ± 0.14	52.57 ± 0.27	67.76 ± 0.31	82.15 ± 0.57	473.95 ± 6.16
	15.62	31.25	62.50	125	250	IC50
Mature	29.21 ± 1.57	55.98 ± 0.46	74.41 ± 0.14	86.36 ± 0.27	91.25 ± 0.26	33.35 ± 0.78

Data represented as mean ± SEM (n = 4 for each 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: 1.00, 1.00, 0.92, and 1.00, respectively; IC₅₀: Trolox 8.68 ± 0.05 μg/mL.