Table 1 List of metabolite standards used to assess the effect of the analytical performance of chemical derivatization
From: Metabolic fingerprinting of Lactobacillus paracasei: the optimal quenching strategy
| Metabolite class | Compounds in the class |
|---|---|
| Neutral amino acids | Alanine, isoleucine, leucine, valine, glycine, asparagine, glutamine, γ-aminobutyric acid |
| Basic amino acids | Arginine, lysine |
| Acidic amino acids | Aspartate, glutamate |
| Aromatic amino acids | Proline, phenylalanine, tyrosine, tryptophan |
| Sulfur-containing amino acids | Serine, threonine, methionine |
| Monocarboxylic acids | Lactic acid, pyruvic acid |
| Dicarboxylic acids | α-Ketoglutaric acid, succinic acid, tartaric acid, malic acid, fumaric acid |
| Tricarboxylic acids | Citric acid |
| Nucleobase | Adenine, uracil, guanine, thymine, cytosine, xanthine, hypoxanthine |
| Nucleosides | Adenosine, 2’-deoxyadenoisine, uridine, 2’-deoxyuridine, guanosine, thymidine, cytidine, xanthosine, inosine, 2’-deoxyxanthine, adenosine triphosphate |
| Monosaccharides | Glucose, galactose, fructose, mannose |
| Disaccharides | Lactose, sucrose, maltose |
| Sugar alcohols | Mannitol, sorbitol |
| Vitamins | Thiamin, nicotinic acid, nicotinamide, pyridoxine, pyridoxamine, pantothenic acid, myo-inositol, biotin |
| Phosphylated sugar | Glucose-6-phosphate, fructose-1,6-biphosphate |
| Internal standards | d 4-Alanine, decane, tetracosane |