Identify methionine by sensory

Identify  methionine by sensory:

1. True Methionine occurs white or light yellow crystalline powder with reflective, but false methionine occurs yellow or gray, little crystalline;
2. True methionine occurs special smell, false methionine smells not pure;
3. True methionine tastes slightly sweet, non-astringent sense; Adulteration of non-sweet smell while having impurities feeling;
4. pure methionine touch creamy texture, fake feel more rough;
5. hydroxysteroid methionine is a brown powder or granular, with hydroxyl group special smell.
6. aluminum products or plastic spoon inserted into methionine feed, a few turns out, there is static,  but fake not.
7. A small sample was added into 100ML water, stirred five seconds and stand, true methionine can be completely dissolved, if not, fake methionine.

Ningxia Unisplendour Tianhua Methionine Co.,Ltd

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Lisa
International Marketing
Email: lisazhang@unischem.com
Skype: Lisa CUC
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Ningxia Unisplendour Tianhua Methionine Co.,Ltd