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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB 5009.294-2023 |
National food safety standards Determination of tryptophan in food {译} 食品安全国家标准 食品中色氨酸的测定 |
China National Standards tryptophan |
 English PDF |
| GB/T 15400-2018 |
Determination of tryptophan in feeds 饲料中色氨酸的测定 |
China National Standards tryptophan |
English PDF |
| GB/T 25735-2010 |
Feed additive - L-tryptophan 饲料添加剂 L-色氨酸 |
China National Standards tryptophan |
English PDF |
| GB/T 15400-1994 |
Determination of tryptophan in feedstuffs--Spectrophotometry 饲料中色氨酸测定方法 分光光度法 |
China National Standards tryptophan |
English PDF |
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