Table 2. Chemical compounds whose levels were positively or negatively correlated with either taste or flavor quality.
| Taste quality (a) | Flavor quality (a) | ||
|---|---|---|---|
| Chemical compounds | R | Chemical compounds | R |
| Fumaric acid | 0.913 | Fumaric acid | 0.928 |
| γ-Butyrobetaine | 0.904 | Thr-Asp | 0.928 |
| Ophthalmic acid | 0.896 | Ophthalmic acid | 0.925 |
| Homoserine | 0.895 | γ-Butyrobetaine | 0.914 |
| Glutathione (GSSG)_divalent | 0.893 | O-Acetylcarnitine | 0.914 |
| O-Acetylcarnitine | 0.891 | Homoserine | 0.907 |
| Saccharopine | 0.889 | Saccharopine | 0.902 |
| Thr-Asp | 0.877 | Trp | 0.900 |
| 5'-Deoxy-5'-methylthioadenosine | 0.872 | Ala-Ala | 0.894 |
| 3-Amino-2-piperidone | 0.864 | N-Acetylornithine | 0.892 |
| Spermidine | 0.862 | His-Glu | 0.888 |
| N-Acetylornithine | 0.846 | Glu | 0.876 |
| His-Glu | 0.846 | 5'-Deoxy-5'-methylthioadenosine | 0.875 |
| Cysteine glutathione disulfide | 0.842 | Threonic acid | 0.874 |
| Ornithine | 0.836 | 3-Amino-2-piperidone | 0.873 |
| Trp | 0.836 | Spermidine | 0.873 |
| Ala-Ala | 0.833 | Asymmetry dimethyl arginine | 0.873 |
| Threonic acid | 0.819 | Glutathione (GSSG)_divalent | 0.866 |
| Glu | 0.818 | Phe | 0.864 |
| cis-Aconitic acid | 0.817 | Ile | 0.845 |
| Asymmetry dimethyl arginine | 0.813 | Cysteine glutathione disulfide | 0.843 |
| N-Acetylglucosamine 1-phosphate | 0.801 | His | 0.841 |
| N6-Acetyllysine | 0.798 | Ornithine | 0.838 |
| Phe | 0.794 | cis-Aconitic acid | 0.836 |
| Ile | 0.791 | N-Acetyllysine | 0.835 |
| Pyridoxamine | 0.790 | N-Acetylglucosamine 1-phosphate | 0.832 |
| Met | 0.789 | Leu | 0.830 |
| Ala | 0.787 | Met | 0.812 |
| Cytosine | 0.785 | Asp | 0.812 |
| His | 0.781 | Pyridoxamine | 0.811 |
| Val | 0.775 | Val | 0.809 |
| 1-Aminocyclopropane-1-carboxylic acid | 0.770 | Ala | 0.808 |
| γ-Glu-Val-Gly | 0.762 | γ-Glu-Val-Gly | 0.807 |
| γ-Glu-2-aminobutyric acid | 0.760 | N6-Acetyllysine | 0.806 |
| Leu | 0.757 | Cystine | 0.796 |
| Cystine | 0.756 | Thr | 0.794 |
| N-Acetyllysine | 0.752 | Ethanolamine | 0.786 |
| N5-Ethylglutamine | 0.749 | Tyr | 0.786 |
| Acetylcholine | 0.748 | N6,N6,N6-Trimethyllysine | 0.784 |
| Ethanolamine | 0.747 | Symmetry dimethyl arginine | 0.776 |
| 2-Isopropylmalic acid | 0.747 | Cytosine | 0.773 |
| 7-Methylguanine | 0.739 | Gly-Asp | 0.771 |
| 2-Amino-2-methyl-1,3-propanediol | 0.735 | 1-Aminocyclopropane-1-carboxylic acid | 0.767 |
| Thr | 0.733 | Choline | 0.759 |
| Tyr | 0.726 | γ-Glu-2-aminobutyric acid | 0.759 |
| Asp | 0.723 | Lys | 0.758 |
| Asn | 0.721 | Asn | 0.753 |
| N6,N6,N6-Trimethyllysine | 0.715 | N5-Ethylglutamine | 0.750 |
| Glucosaminic acid | 0.715 | 5-Oxoproline | 0.748 |
| Gly | 0.708 | Pro | 0.748 |
| Symmetry dimethyl arginine | 0.707 | Ser | 0.747 |
| 5-Oxoproline | 0.704 | 2-Amino-2-methyl-1,3-propanediol | 0.740 |
| Pro | 0.703 | Gly | 0.738 |
| Acetylcholine | 0.732 | ||
| 7-Methylguanine | 0.724 | ||
| 2-Isopropylmalic acid | 0.717 | ||
| Nω-Methylarginine | 0.710 | ||
| Shikimic acid | -0.206 | ||
| 3-Hydroxyanthranilic acid | -0.207 | ||
| Glycerol 3-phosphate | -0.212 | ||
| Phosphorylcholine | -0.226 | ||
| Arg | -0.244 | ||
| Hypotaurine | -0.266 | ||
| 5-Methyl-2'-deoxycytidine | -0.276 | ||
| Nicotinamide | -0.277 | ||
| Glycerophosphocholine | -0.287 | ||
| N-Methylglutamic acid | -0.290 | ||
| 3-Hydroxypropionic acid | -0.327 | ||
| Isovaleric acid | -0.327 | ||
| Pyridine | -0.327 | Glycerophosphocholine | -0.392 |
| Ethanolamine phosphate | -0.409 | Tyr-Glu | -0.392 |
| Tyr-Glu | -0.475 | Ethanolamine phosphate | -0.510 |
| 2'-Deoxycytidine | -0.527 | 2'-Deoxycytidine | -0.546 |
| Tyr-Arg_divalent | -0.619 | Mevalolactone | -0.632 |
| Mevalolactone | -0.670 | Leu-Leu-Tyr | -0.643 |
| Leu-Leu-Tyr | -0.682 | Tyr-Arg_divalent | -0.675 |
| Pyruvic acid | -0.712 | Octopamine | -0.728 |
| Octopamine | -0.724 | Glu-Glu | -0.753 |
| 2-Oxoglutaric acid | -0.733 | 2-Oxoglutaric acid | -0.772 |
| Glu-Glu | -0.783 | Pyruvic acid | -0.801 |
| Pyridoxine | -0.861 | Pyridoxine | -0.879 |
(a) Negative value of correlation coefficient shows high quality.