Research Article
Quality Evaluation Based on Multivariate Statistical Methods
Table 4
The CR of 50 grape physicochemical indexes.
| Index | CR |
| Total amino acids | 2.49 | Aspartic acid | | Threonine | 19.18 | Serine | | Glutamic acid | 10.25 | Proline* | 0.89 | Glycine | 14.00 | Alanine | | Cystine | | Valine | | Methionine | | Isoleucine | 17.28 | Leucine | 20.47 | Tyrosine | | Phenylalanine | 1.56 | Lysine | −5.16 | Histidine | 8.77 | Arginine | | Protein | 45.29 | VC* | −0.78 | Anthocyanin* | 0.23 | Tartaric acid | −6.97 | Malic acid | 7.41 | Citric acid | −1.90 | POA† | 6.34 | Browning degree | | DPPH free radical | 6.54 | Total phenolic | | Tannin | 4.71 | Grape flavonoid* | | Resveratrol* | | Trans-RG†* | 0 | CIS-RG†* | 0.12 | Transresveratrol | 2.21 | CIS resveratrol* | 0 | Flavonol* | 0.38 | MC†* | 0.74 | Quercetin* | 0.29 | Kaempferol* | | Isorhamnetin* | 0 | Total sugar | | Reducing sugar | 10.67 | Fructose | 9.08 | Glucose | 10.72 | Soluble solids | | PH | | Titratable acid | 11.32 | Solid acid ratio | | Dry matter content | 39.92 | Ear weight | 1.43 |
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13 grepe physicochemical indexes which are ignored. POA: polyphenol oxidase activity; trans-RG: transresveratrol glucoside; CIS-RG: CIS resveratrol glucoside; MC: myricetin cannabiscetin.
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