Chemical Characterization, Antioxidant, Antimicrobial, and Antibiofilm Activities of Essential Oils of Plumeria alba (Forget-Me-Not)

Table 4

Antioxidant activities of flower and leaf essential oils of Plumeria alba.

Sample	TAC μg/g AAE	H2O2 scavenging activity IC50 (μg/mL)	DPPH radical-scavenging activity IC50 (μg/mL)		TBARS assay IC50 (μg/mL)
P. alba flowers	57 ± 26.9	370.5 ± 0.5		1014 ± 0.6	1943 ± 0.9
P. alba leaves	83 ± 1.41	476.0 ± 0.4		2798 ± 1.1	3069 ± 0.9
Ascorbic acid	ND	5.30 ± 0.2		14.30 ± 4.3	ND
Gallic acid	ND	9.08 ± 1.6		2.26 ± 0.2	ND
BHT	ND	ND		ND	9.238 ± 1.7

Data are represented as a mean ± standard deviation. TAC: total antioxidant capacity; TBARS: thiobarbituric acid reactive substance assay; ND: not determined (compound not used in that experiment).