Table 2.
TDC inhibition by different inhibition chemicals (enzyme assay)
| Chemicals | TDC inhibition ratio (%) |
|---|---|
| Control | 0 |
| Water-soluble vitamins | |
| Thiaminea (B1) | −23.2 |
| Riboflavin (B2) | 7.4 |
| Nicotinic acid (B3) | 6.3 |
| Pantothenic acid (B5) | 8.7 |
| Pyridoxin (B6) | −0.2 |
| Biotin (B7) | −16.6 |
| Ascorbic acid (C) | 4.0 |
| Organic acids | |
| Tartaric acid | 0.8 |
| Acetic acid | −12.8 |
| Lactic acid | −0.6 |
| Succinic acid | −3.7 |
| Oxalic acid | −13.6 |
| Malic acid | −9.5 |
| Citric acid | −7.3 |
| Shortchain fatty acids | |
| Formic acid | −27.0 |
| Propionic acid (C3:0) | 7.4 |
| Butyric acid (C4:0) | −36.7 |
| Valeric acid (C5:0) | 8.7 |
| Hexanoic acid (C6:0) | 10.9 |
| Sugars | |
| Glucose | −12.8 |
| Lactose | −14.9 |
| Sucrose | 8.3 |
| Salts | |
| K2SO4 | −21.6 |
| FeSO4·7H2O | −32.8 |
| MgSO4 | −25.2 |
| MnSO4.(nH2O) | −30.8 |
| ZnSO4 | −39.5 |
| (NH4)2SO4 | −6.0 |
| CuSO4 | 68.0 |
| CuClb2 | 82.2 |
| CuNO3 | 72.4 |
| CuBr2 | 74.4 |
| Na4P2O7 | 0.8 |
| CaCl2 | 0.6 |
| CaCO3 | −6.7 |
| CaSO4 | −0.6 |
| CaNO3 | −30.6 |
| AgNO3 | 98.6 |
| MgCl | 4.6 |
| CaCl | −6.0 |
| MnCl | 2.7 |
| LiCl | −7.4 |
| NaCl | 18.1 |
| Mimic | |
| ρ-cresol | 4.9 |
aInhibition chemical concentration 0.1%
bException chemicals as toxic effects at in vivo