| # Activity | Chemical | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|---|
| 22 | BETULINIC-ACID | Root | -- | 53000.0 | 3.82 | Jim Duke's personal files. |
| 15 | FIBER | Tuber | 74000.0 | 173709.0 | 2.16 | * |
| 29 | TRYPTOPHAN | Leaf | 1160.0 | 5011.0 | 2.05 | * |
| 2 | CYSTINE | Seed | 5450.0 | 5946.0 | 1.95 | * |
| 8 | TYROSINE | Seed | 14570.0 | 15896.0 | 1.89 | * |
| 4 | THREONINE | Tuber | 4510.0 | 10587.0 | 1.72 | * |
| 29 | TRYPTOPHAN | Seed | 7620.0 | 8313.0 | 1.7 | * |
| 3 | VALINE | Tuber | 5990.0 | 14061.0 | 1.68 | * |
| 4 | LYSINE | Tuber | 5920.0 | 13897.0 | 1.68 | * |
| 2 | LEUCINE | Tuber | 6400.0 | 15023.0 | 1.68 | * |
| 15 | METHIONINE | Tuber | 1430.0 | 3357.0 | 1.67 | * |
| 1 | SERINE | Tuber | 4640.0 | 10892.0 | 1.67 | * |
| 12 | COPPER | Seed | 28.0 | 33.0 | 1.65 | * |
| 8 | TYROSINE | Tuber | 3530.0 | 8286.0 | 1.64 | * |
| 7 | HISTIDINE | Leaf | 7900.0 | 8618.0 | 1.63 | * |
| 7 | PHENYLALANINE | Tuber | 4510.0 | 10587.0 | 1.62 | * |
| 15 | RIBOFLAVIN | Seed | 1.0 | 7.7 | 1.6 | * |
| 7 | HISTIDINE | Tuber | 2410.0 | 5657.0 | 1.6 | * |
| 3 | ISOLEUCINE | Tuber | 4250.0 | 9976.0 | 1.6 | * |
| 3 | ALANINE | Tuber | 3970.0 | 9319.0 | 1.56 | * |