IM	Intestinal Microbiota
NCD	Non-Communicable Disease
OA	Organic Acid
PBS	Phosphate-Buffered Saline
FOS	Fructooligosaccharides
TSB	Tryptone Soya Broth
RPS	Reduced Physiological Salt Solution
SSF	Simulated Salivary Fluid
SGF	Simulated Gastric Fluid
SIF	Simulated Intestinal Fluid
OA(s)	Organic Acid (s)
DNA	Deoxyribonucleic Acid
RNA	Ribonucleic Acid
UPLC-qTOF-MS/MS	Ultra-Performance Liquid Chromatography Coupled to Quadrupole Time-of-Flight Tandem Mass Spectrometry
ESI	Electrospray Ionisation
DAD	Diode-Array Detector
RA	Relative Abundance
α-diversity/β-diversity	Alpha and Beta Diversity