Table 5.
Acidic components from the volatile compounds of soypaste.
| No | Name | RI | Smell description | Log3 FD | |
|---|---|---|---|---|---|
| WAX | DB-5 | ||||
| 1 | Acetic acid | 1413 | 671 | Acetic, vinegar odor | 2 |
| 2 | 2-Methylpropionic acid | 1468 | — | Pungent odor, rancid oil odor | 3 |
| 3 | Butyric acid | 1546 | — | Milk, cream, butter, cheese, fruity aroma | 2 |
| 4 | 3-Methylpentanoic acid | 1597 | 882 | Sour herbal aroma, slightly green grass aroma | 6 |
| 5 | Isovaleric acid | 1638 | 966 | Old sock odor | 7 |
| 6 | Hexanoic acid | 1826 | 1209 | Strong rancid cheese aroma | 1 |
| 7 | Lactic acid | >2000 | 1296 | Mild and pleasant cheese aroma | 5 |
| 8 | Nonanoic acid | >2000 | 1308 | Fats, wax, cheese, coconut fragrance | <1 |