| AAD | antibiotic-associated diarrhea |
| BB-12 | bifidobacterium animalis subsp. lactis strain bb-12 |
| EPS | exopolysaccharide |
| FDA | food and drug administration |
| FFAR2/3 | free fatty acid receptor 2/3 |
| FFAs | free fatty acids |
| FOSs | fructooligosaccharides |
| GALT | gut-associated lymphoid tissue |
| GLP-1 | glucagon-like peptide-1 |
| GOSs | Galactooligosaccharides |
| GPCRs | g-protein coupled receptors |
| GPR109A | hydroxycarboxylic acid receptor hcar2 |
| GPR41/43 | g protein-coupled receptor 41/43 |
| HDACs | histone deacetylases |
| HIF | hypoxia-inducible factor |
| IBD | inflammatory bowel disease |
| ICs | intestinal cells |
| IEB | intestinal epithelial barier |
| IL | Interleukin |
| ILC3 | innate lymphoid cells type 3 |
| INF | intestinal inflammation |
| ISAPPs | international scientific association for probiotics and prebiotics |
| ITFs | inulin-type fructans |
| LTA | lipoteichoic acid |
| MAPKs | mitogen-activated protein kinases |
| MUC2 | Mucin-2 |
| NF-κB | nuclear factor kappa-light-chain-enhancer of activated b cells |
| NGPs | next-generation probiotics |
| PDX | Polydextrose |
| PP | plasma protein |
| PS | Postbiotics |
| PYY | peptide YY |
| SCFAs | short-chain fatty acids |
| SIBO | small intestinal bacterial overgrowth |
| TJ | tight junction |
| TNF-α | tumor necrosis factor alpha |
| ZO-1 | zonula occludens-1 |