Evaluation of nutritional values, phenolic profile, aroma compounds and biological properties of Pittosporum tobira seeds

Table 3 Antioxidant capacity of essential oil and methanolic extract of Pittosporum tobira seeds

	DPPH scavenging activity (IC₅₀, mg/mL)^*	Reducing power (EC₅₀, mg/mL)^**	(H₂O₂) scavenging activity (IC₅₀, μg/mL)^***	Anti-hemolytic activity (IC₅₀, μg/mL)
Essential oil	1.5 ± 0.21^c,d	0.982 ± 0.24^b	159.43 ± 2.7^c	116.54 ± 1.8^c
Methanolic extract	> 10	> 1	308.57 ± 8.14^f	–
Synthetic antioxidant
BHT	0.093 ± 0.004^a	0.384 ± 0.102^a	–	–
Vit C	0.0105 ± 0.001^b	–	20.73 ± 0.78^a	16.75 ± 0.61^a

Values are mean ± SD, n = 3 (three independent experiments)
Different letters for the same column indicate significant differences at p < 0.05
^* IC50 value was the effective concentrations at which DPPH were scavenged by 50%
^**EC50 value: the effective concentration at which the antioxidant activity was 50%; the absorbance was 0.5 for reducing power
^*** IC50 value was the effective concentrations at which H₂O₂ were scavenged by 50%
Vit C Vitamin C, BHT Butylated hydroxytoluene

ISSN: 1476-511X