LB	Lycium barbarum L.
TPC	total phenolic compound
LBN	Lycium barbarum L. fruits from Ningxia
LBG	Lycium barbarum L. fruits from Gansu
LBQ	Lycium barbarum L. fruits from Qinghai
QAMS	quantitative analysis of multiple components by a single marker
UV-vis	ultraviolet-visible spectroscopy
LOD	limit of detection
LOQ	limit of quantification
RSD	relative standard deviations
RCF	relative correction factor
ATR	attenuated total reflection
IR	internal reference
PCA	principal component analysis