Antielastase Activity of Macassar Kernels (Rhus javanica) Stem Extract and Skin Elasticity Evaluation of Its Topical Gel Formulation

Table 4

Antielastase activity of EGCG.

Sample (μg/mL)	Elastase inhibition (%)	Coefficient of variation	The regression equation and correlation value	IC50 (μg/mL)
8	28,34 ± 2,69	9,48	Y = 0,4408x + 24,668 R = 0,9958	57,43
16	32,75 ± 1,68	5,12
32	38,38 ± 2,30	5,98
48	43,78 ± 0,14	0,32
64	53,66 ± 2,40	4,47
80	60,53 ± 8,19	13,53