TABLE 6.
Principal component analysis results of the samples
| (a) Principal component eigenvalues and the variance contribution rate of monosaccharides | ||||
| Principal component | Eigenvalue | Contribution rate (%) | Cumulative contribution rate (%) | |
| F1 | 3.222 | 53.699 | 53.699 | |
| F2 | 1.763 | 29.388 | 83.087 | |
| (b) Principal component factor load matrix | ||||
| Component | F 1 | F 2 | ||
| Mannose | 0.905 | –0.187 | ||
| Ribose | 0.703 | 0.318 | ||
| Rhamnose | 0.744 | 0.467 | ||
| Glucose | 0.531 | 0.756 | ||
| Galactose | 0.892 | –0.421 | ||
| Arabinose | 0.527 | –0.813 | ||
| (c) The comprehensive evaluation results of samples were based on principal component analysis | ||||
| Sample | F 1 | F 2 | F | Ranking |
| S1 | 0.8831 | –0.4062 | 0.3548 | 3 |
| S2 | 0.9050 | ‐0.8410 | 0.2388 | 4 |
| S3 | –1.1032 | 0.3875 | –0.4785 | 12 |
| S4 | –1.1273 | 0.3449 | –0.5040 | 13 |
| S5 | –0.4507 | –0.2359 | –0.3113 | 8 |
| S6 | –0.8190 | –0.0151 | –0.4443 | 10 |
| S7 | –1.1390 | 0.0791 | –0.5884 | 14 |
| S8 | 0.9722 | –1.0077 | 0.2259 | 5 |
| S9 | 0.7226 | –0.7277 | 0.1742 | 6 |
| S10 | –1.0734 | 0.3358 | –0.4777 | 11 |
| S11 | 1.4688 | 1.7517 | 1.3035 | 1 |
| S12 | 1.0784 | 1.9689 | 1.1577 | 2 |
| S13 | 0.4545 | ‐1.7810 | –0.2794 | 7 |
| S14 | –0.7718 | 0.1468 | –0.3713 | 9 |