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Zhejiang Shenghua Group Imp. & Exp. Co.,Ltd
[China]
Address:
Rm.1406 Central Building No.271 South Hushu Road Hangzhou China Hangzhou Zhejiang 310005 China
Phone:
86-0571-56317185
Contact name:
nancy yan
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Zhejiang Shenghua Group Imp. & Exp. Co.,Ltd
 
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L-Tryptophan

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Feed and Pharma grade, non-animal source
L-Tryptophan is one of essential amino acids in human diet; it’s needed for normal growth in infants and for nitrogen balance in adults. The body uses tryptophan to help make niacin and serotonin. Serotonin is thought to produce healthy sleep and a stable mood.
Appearance: White to yellow crystalline powder
Method of production:Produced by microbial fermentation.
Standard: EP6, USP31, AJI97, FCC4
Packaging: 25kg net in Kraft bag or drum.

Items Requirements
Appearance White to yellow crystalline powder
Specific rotation -30.0° to -33.0°
Identification Corresponds to standard
Acidity or alkalinity 5.5 to 6.4
Loss on drying,% Not more than 0.2
Residue on ignition,% Not more than 0.1
Heavy metals(Pb),% Not more than 0.001
Arsenic (As),% Not more than 0.0001
Assay,% 98.5 to 101.0

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