Determination of Total Phenolics, Flavonoids, and Antioxidant Activity and GC-MS Analysis of Malaysian Stingless Bee Propolis Water Extracts

Table 3

Percentage of DPPH scavenging activity and IC₅₀ value of propolis water extracts.

Propolis	Concentration of sample (mg/mL)	Absorbance	DPPH scavenging activity (%)	IC50 (mg/mL)
T. apicalis	1	0.391	20.53	5.18
	2	0.364	26.02
	3	0.315	35.98
	4	0.282	42.68
	5	0.258	47.56
T. binghami	1	0.403	18.09	6.14
	2	0.356	22.64
	3	0.323	34.35
	4	0.312	36.59
	5	0.286	41.87
H. fimbriata	1	0.343	30.28	3.95
	2	0.313	36.38
	3	0.274	46.31
	4	0.245	50.20
	5	0.212	56.91
Ascorbic acid	1	0.355	19.17	5.08
	2	0.333	24.25
	3	0.275	37.19
	4	0.245	42.13
	5	0.227	48.22
	Blank	0.439	0.00