Basic Info.
Model NO.
Food grade
Nutrient Composition
Amino Acid
Resource
Natural
The content of active substances
＞90%
Specific Rotation
+38.9-+41.8
Manufacturer
Yes
Shipment
5-15 Days
Physical Characteristics
White Crystalline Powder
Identification
Meets The Requirements
Residue on Ignition
<=0.2%
Loss on Drying
<=0.2%
Chloride
<= 0.05%
Sulfate
<=0.30%
Iron
<= 0.003%
Heavy Metals
<=0.0015%
Assay
98.0%-102.0%
Bacterial Endotoxins
<=10EU/G
Transport Package
25kg Drum
Specification
GB
Trademark
Keynovo
Origin
China
Production Capacity
10000 Kg/Per Month
Product Description
Serine plays an important role in the catalytic function of many enzymes. It has been shown to occur in the active sites of chymotrypsin, trypsin, and many other enzymes. The so-called nerve gases and many substances used in insecticides have been shown to act by combining with a residue of serine in the active site of acetylcholine esterase, inhibiting the enzyme completely. 
| Item | Specifications |
| Description | White crystals or crystalline power |
| Assay ,% | 98.5~101.5 |
| Transmittance, % | ≥95.0 |
| Specific rotation | +14.0°~+15.6° |
| Chloride,% | ≤0.02 |
| Sulfate,% | ≤0.02 |
| Ammonium,% | ≤0.02 |
| Iron, % | ≤0.001 |
| Heavy metals ,% | ≤0.001 |
| Arsenic, % | ≤0.0001 |
| Loss on drying, % | ≤0.2 |
| Residue on ignition,% | ≤0.1 |
| PH | 5.2 -6.2 |
Amino acids l-serine used as a biochemical reagent and food additives. Medicine used for amino acids on nutrition medicine,Nutritional supplement.
1:We have 20 years of experience in exporting products, strong market response capabilities and a wide range of trading partners.2:We have a variety of certified factories to produce high quality products.
3:We offer full link hosted services from production to delivery.
4:We provide testing services prior to shipment of the product.
5: We will cultivate customers in every country market, let customers develop quickly with us, and win-win cooperation.
6:Stable supply, delivery on time, quality assurance
FAQ&PaymentQuestion 1:Can you supply free samples ?
Answer:Because so many free sample orders everyday to us, sorry, we need to supply sample with charge, but sample charge can be deducted from future orders.Hope you can understand.
Question 2: How to assure your delivery same good quality as sample?
Answer: We just take sample from mass production. So same production line,same quality. Even we can supply you preshipment batch sample approval.
Question3. How to assure our delivery and quality after prepayment? If there is a dispute about quality etc, how to solve the problem?
Answer: We are committed to ingredient industry for nearly 20 years. Our products sold popular to European, american, russia and asian market.
The most important is pls book order directly in Alibaba order.You can get extra Ali trade assurance. Our current assurance limit is USD104000 and will still up in future.
We welcome use Trade Assurance, you'll enjoy:
100% product quality protection
100% on-time shipment protection
100% payment protection for your covered amount
Question 4:What kind of payment do you prefer?
Answer: We can accept TT, DP,LC,Westunion etc.
Payment
Payment Term | T/T | 30% T/T in advance, paid the balance before shipment | |
| CFR(C&F) | |||
| 30% T/T in advance, paid the balance against copy of B/L | |||
| CIF | |||
| L/C | L/C amount above 20,000 usd, we can accept L/C at sight after the issuing bank approved by us | ||
| West Union | |||
| Amount lower than 5000usd | |||