XJ	Xijiang
DX	Dongxing
QH	Qinghua
HS-SPME	Headspace solid-phase microextraction
GC-MS	Gas chromatography–mass spectrometry
rOAV	Relative odor activity value
PCA	Principal component analysis
CH.P	The Pharmacopeia of the People’s Republic of China
VOCs	Volatile organic compounds
SD	Standard deviation
ANOVA	One-way analysis of variance
HCA	Hierarchical cluster analysis
VIP	Variable importance in projection
OPLS-DA	Orthogonal partial least squares discriminant analysis
Log2FC	Log2 fold change
DAVs	Differentially accumulated volatiles
TICs	Total ion chromatograms
GC-O	Chromatography–olfactometry