Table 1.

Pure components comprising the VOCs of Bacillus velezensis L1, these substances were purchased for further experiments.

Compound	CAS	Source	Purity
2,3-butanedione	C431038	Macklin	≥99.0%
1-Hydroxy-2-propanone	C116096	Macklin	≥95.0%
Acetoin	C513860	Macklin	≥97.0%
2-pentanone	C107879	Macklin	≥99.0%
2-heptanone	C110430	Macklin	≥99.7%
Cyclohexanone	C108941	Macklin	≥99.0%
methyl 2-methylbutanoate	C868575	Macklin	≥98.0%
2-Pentylfuran	C3777693	Macklin	≥98.0%
2-methylpropyl butanoate	C539902	Macklin	≥98.0%