AOAC	Association of Official Agricultural Chemists
BMI	body mass index
ESI	electrospray ionization
FDR	false discovery rate
FTMS	Fourier transform mass spectrometry
HPLC	high performance liquid chromatography
HRMS	high-resolution mass spectrometry
IQR	interquartile range
LOD	limit of detection
LOQ	limit of quantification
LTQ	linear ion trap quadrupole
MeOH	methanol
ME	matrix effect
MPM	microbial phenolic metabolites
MS/MS	two-stage mass analysis
MSn	multi-stage mass analysis
PCA	principal component analysis
R2	coefficient of determination
RSD	relative standard deviation
SD	standard deviation
SEM	standard error of mean
S/N	signal-to-noise
SPE	solid-phase extraction
TPI	total (poly)phenol intake
UHPLC	ultra-high performance liquid chromatography