Rapid Screening of Volatile Organic Compounds from Aframomum danielli Seeds Using Headspace Solid Phase Microextraction Coupled to Gas Chromatography Mass Spectrometry

Table 2

Top 30 most abundant VOCs extracted from A. danielli seeds annotated using the three libraries listed in Table 1.

Retention time (min)	Percentage abundance		Literature reported (Aframomum spp.)	Literature reported (other plant species)
4.02	0.15	α-Thujene	[27, 28]
4.134	7.58	α-Pinene	[28, 29]
4.898	22.11	β-Pinene oxide		[30]
5.886	58.10	Eucalyptol	[29]
6.173	0.08	γ-Terpinene	[31]
6.294	0.09	Sabinene hydrate	[28, 32]
6.768	0.08	Sabinene hydrate	[28]
7.187	0.12	α-Campholenal	[31]
7.388	0.39	Pinocarveol		[33]
7.743	0.11	Pinocarvone	[28, 34]
7.823	0.28	δ-Terpineol	[31]
7.976	0.11	Terpinen-4-ol	[34]
8.235	4.08	α-Terpineol	[28, 34]
8.594	0.21	Carveol	[28]
8.941	0.18	Carvone	[28]
10.271	0.21	Carvyl acetate		[35]
10.419	1.83	α-Terpinyl acetate	[28]
10.788	0.35	α-Copaene	[28, 29]
10.988	0.11	β-Elemene	[28, 36]
11.359	0.12	Caryophyllene		[37, 38]
11.553	1.17	α-Bergamotene	[34]
11.73	0.09	Valerena-4,7(11)-diene		[39]
11.789	0.12	β-Bergamotene	[28, 32]
12.05	0.15			[40–42]
12.168	0.34	Caryophyllene		[38]
12.356	0.21	Isodaucene		[43]
12.446	0.31	β-Bisabolene	[29, 34]
12.571	0.19	β-Selinene	[29, 34]
13.365	0.13	Caryophyllene oxide	[34]
14.493	0.07	α-Bergamotol		[44]

was made with the match of ≥85% from the NIST Library, with the lowest match of 85% obtained for the last three entries (sabinene hydrate , γ-terpinene, and α-bergamotol) with percentage abundances between 0.07 and 0.08%. E isomer has been reported elsewhere to elute earlier than the “Z” isomer [28, 32]. reported in bacteria.