Table 1 Load diagrams of 31 carbon sources on the first and second principal components
Type of carbon source | Substrate | Number | PC1 | PC2 |
|---|---|---|---|---|
Polysaccharides | D-xylose | B2 | 0.522 | − 0.381 |
|  | D-Lactose | H1 | 0.406 | − 0.604 |
|  | β-Methyl D-glucoside | A2 | 0.668 | − 0.597 |
|  | Glucose-1-Phosphate | G2 | 0.229 | − 0.566 |
|  | a-cyclodextrin | E1 | − 2.241 | − 0.082 |
|  | Glucose | F1 | − 2.229 | − 0.079 |
|  | D-Cellobiose | G1 | 0.715 | − 0.690 |
Amino acids | L-Arginine | A4 | − 0.640 | − 0.136 |
|  | L-Asparagine | B4 | 0.866 | − 0.598 |
| Â | L-Phenylalanine | C4 | 0.754 | 0.644 |
|  | L-Serine | D4 | 0.433 | − 0.618 |
| Â | L-Threonine | E4 | 0.629 | 0.115 |
|  | Glycosyl-L-glutamic acid | F4 | 0.764 | − 0.631 |
Esters | methyl pyruvate | B1 | 0.507 | 2.787 |
|  | Tween 40 | C1 | − 0.054 | 2.782 |
|  | Tween 80 | D1 | 0.975 | − 0.402 |
|  | D-galactonic acid gamma lactone | A3 | 0.447 | − 0.465 |
Alcohols | I-erythritol | C2 | − 2.239 | − 0.111 |
|  | D-Mannitol | D2 | 0.508 | − 0.645 |
|  | D, L-a-glycerol | H2 | − 0.299 | − 0.572 |
Amines | phenethylamine | G4 | 0.794 | 2.066 |
|  | putrescine | H4 | − 0.991 | − 0.145 |
|  | N-Acetyl-D-Glucamine | E2 | 0.481 | − 0.470 |
Hydroxy acids | D-galacturonic acid | B3 | 0.739 | 2.099 |
|  | D-Glucosamine | F2 | − 1.387 | 0.173 |
|  | 2-Hydroxybenzoic acid | C3 | − 0.695 | − 0.194 |
|  | 4-Hydroxybenzoic acid | D3 | − 0.295 | − 0.237 |
|  | R-Hydroxybutyric acid | E3 | 0.475 | − 0.523 |
|  | Itaconic acid | F3 | 0.629 | − 0.657 |
|  | A-butanone acid | G3 | 0.220 | − 0.919 |
|  | D-malic acid | H3 | 0.663 | − 0.646 |