. 2016 Jun 2;17(6):866. doi: 10.3390/ijms17060866

Table 4.

Protonated masses, tentative identification, molecular formula, and references of the investigated volatile compounds.

Protonated Masses m/z	Tentative Identification	Chemical Formulae	Reference
27.022	Acetylene	C₂H₃⁺	[26]
33.033	Methanol	CH₅O⁺	[26]
45.033	Acetaldehyde	C₂H₅O⁺	[27]
49.000	methanethiol	CH₅S⁺	[28]
55.055	Alkyl fragment	C₄H₇⁺	[29]
57.033	hexenal fragments	C₃H₅O⁺	[30]
63.027	Dimethylsulfide (DMS)	C₂H₇S⁺	[31]
67.054	Terpene fragment	C₅H₇⁺	[32]
69.069	Isoprene	C₅H₉⁺	[30]
71.049	2-butenal	C₄H₇O⁺	[29]
73.065	Isobutanal/Butanone	C₄H₉O⁺	[29]
75.044	Methyl acetate/Propanoates	C₃H₇O₂⁺	[29]
81.069	Fragment/hexanal fragments	C₆H₉⁺	[27]
89.059	Ethyl acetate/Methyl-propanoate	C₄H₉O₂⁺	[29]
93.069	terpenes alkyl fragment	C₇H₉⁺	[32]