Rapid determination of S-(+)-linalool in leaf of Cinnamomum osmophloeum ct. linalool using ultrasound-assisted microextraction

Journal of Analytical Science and Technology

Table 1 Chemical composition (%) of LEOs extracted by hydrodistillation (HD) and ultrasound-assisted microextraction (UAME)

AI^a	rAI^b	Compound	HD-EO	UAME-EO	Identification method^c
932	932	α-Pinene	0.2 ± 0.0		AI, MS, ST
988	988	β-Myrcene	0.1 ± 0.0	0.2 ± 0.0	AI, MS
1028	1024	Limonene	0.3 ± 0.0		AI, MS
1034	1032	cis-β-Ocimene	0.1 ± 0.0	0.2 ± 0.0	AI, MS
1044	1044	trans-β-Ocimene		0.2 ± 0.0	AI, MS
1085	1084	trans-Linalool oxide (furanoid)	0.1 ± 0.0	0.3 ± 0.0	AI, MS
1100	1095	S-(+)-Linalool	97.8 ± 0.1	70.4 ± 0.6	AI, MS, ST
1194	1186	α-Terpineol	0.1 ± 0.0		AI, MS
1197	1195	4-Allylanisole	0.2 ± 0.0	0.2 ± 0.0	AI, MS
1270	1267	trans-Cinnamaldehyde	0.9 ± 0.2	2.2 ± 0.4	AI, MS, ST
1429	1432	Coumarin		26.1 ± 0.4	AI, MS, ST
		Monoterpenes hydrocarbons (%)	0.7	0.6
		Oxygenated monoterpenes (%)	98.0	70.7
		Other (%)	1.1	28.5
		Total identified (%)	99.8	99.8

Data were presented as mean ± SD (n = 3)
^aArithmetic index
^bReference arithmetic index
^cCompound identified by arithmetic index (AI), mass spectrum (MS), and standard compound (ST)