TVB-N	Total volatile basic nitrogen
TBARS	Thiobarbituric acid reactive substances
TCA	Trichloroacetic acid
MDA	Malonaldehyde
QC	Quality control
GS I	Ion source gas I
GS II	Ion source gas II
CUR	Curtain gas
CAD	Collision-activated dissociation
QTRAP	Triple quadrupole
DP	Declustering potential
CE	Collision energy
VIP	Variable importance in projection
RSD	Relative standard deviation
KEGG	Kyoto Encyclopedia of Genes and Genomes
SD	Standard deviation