Table 2.
SC₅₀ value determined in the DPPH assay of essential oils and equivalence value compared to reference compounds

	SC50 (mg/mL)	Equivalence value
		Trolox	Ascorbic acid	Tocopherol
		C. unshiu	0.1	4.8	3.28	0.37
C. loureirii Nees	0.09	5.35	3.65	0.42
A. capillaris Thunb.	0.82	0.57	0.39	0.04
J. chinensis	1.25	0.37	0.26	0.03
Z. schinifolium S. et Z.	1.98	0.23	0.16	0.02
C. pseudogulgul hort.	7.41	n/a	n/a	n/a
Z. piperitum	8.42	n/a	n/a	n/a

n/a : not applicable
Equivalence value = SC₅₀ value of reference compound (µmol) / SC₅₀ value of essential oil (100 g)