Table 2. Results of spiking test for biogenic amines in Cheonggukjang
| Analyte1) | Recovery (%) | R2 |
| 2 mg/kg | 4 mg/kg |
| TRP | 106.9±4.92) | 93.7±5.3 | 0.9986 |
| 2-PHE | 97.4±7.1 | 88.8±5.6 | 0.9998 |
| PUT | 98.2±5.9 | 104.8±6.7 | 0.9995 |
| HIS | 88.2±1.4 | 86.6±4.7 | 0.9999 |
| TYR | 97.3±6.9 | 91.5±2.7 | 0.9999 |
| SPD | 104.0±6.5 | 96.6±2.8 | 0.9999 |
| SPM | 94.9±6.0 | 96.9±5.1 | 0.9998 |
1)TRP, tryptamine; PHE, 2-phenylethylamine; PUT, putrescine; CAD, cadaverine; HIS, histamine; TYR, tyramine; SPD, spermidine; SPM, spermine.
2)All the data were expressed as mean±SD (n=3).