Table 3 Field sensory evaluation standards
Item | Grading | Scores | ||
|---|---|---|---|---|
Smell | No butyric acid odor, aromatic fruity | 14 | ||
Has a faint butyric acid odor | 10 | |||
The smell of butyric acid is quite strong | 4 | |||
Has a strong butyric acid or ammonia smell | 2 | |||
Structure | Stem and leaf structure maintained in good condition | 4 | ||
Leaf structure is poorly maintained | 2 | |||
The stem and leaf structure are extremely poorly preserved | 1 | |||
Stems and leaves are rotten or seriously contaminated | 0 | |||
Color | Similar to the raw materials | 2 | ||
Slightly discolored, light yellow or brownish | 1 | |||
Severe discoloration, dark green or fading to yellow | 0 | |||
Total score | 16–20 | 10–15 | 5–9 | 0–4 |
Grade | Excellent | Good | Medium | Corruption |