Your Professional Amino Acids Supplier
Our Perspective:To become an excellent Chinese chemical distributor.
Our Mission:To promote the globalization of Chinese chemicals.
Since 2006, Longfeng has been dedicating itself as an active manufacturer and supplier of chemical products onan international scale. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
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L-leucine PowderLeucine (abbreviated as Leu or L) is a branched-chain α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. Leucine is classified as a hydrophobic amino acid due to its aliphatic isobutyl
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L-isoleucineIsoleucine (abbreviated as Ile or I)[1] is an α-amino acid with the chemical formula HO2CCH(NH2)CH(CH3)CH2CH3. It is an essential amino acid, which means that humans cannot synthesize it, so it must
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Providing the body with energy: Isoleucine and valine, in particular, are good sources of energy to fuel the body.
Enhancing the musculoskeletal system: Isoleucine and valine assist with healthy muscle function, while leucine works to repair muscles. Lysine promotes calcium absorption needed for bone growth.
Regulating digestion: Your body produces histamine to help your digestive system work properly. You need histamine to histidine to help generate histamine.
Enforcing healthy sleep/wake cycles: Erratic sleep habits caused by issues such as insomnia, sleep apnea, and stress, can take a toll on your overall health. Histidine and tryptophan help you maintain normal circadian rhythms for a good night’s sleep.
Supporting the immune system
Want to keep colds and flu at bay? histidine, lysine, and threonine help boost immunity so your body can better fight off viruses.
Producing neurotransmitters
These chemicals are the nervous system’s way of communicating with the body, regulating everything from appetite to mood. Phenylalanine not only produces some neurotransmitters but other types of amino acids, too.
Stimulating the growth of healthy skin, nails, and hair
Collagen and elastin keep your complexion looking soft and supple. These two proteins also encourage hair and nail growth. Lysine assists with collagen production, while threonine helps generate collagen and elastin.
Specification of Amino Acids
|
DESCRIPTION |
WHITE CRYSTALS OR CRYSTALLINE POWDER |
CONFIRMS |
|
ASSAY% |
98.5~101 |
99.5 |
|
PH |
5.5~7.0 |
6.2 |
|
SPECIFIC ROTATION |
+14.9°~+17.3° |
+16.3° |
|
RESIDUE ON IGNITION% |
≤0.2 |
0.06 |
|
LOSS ON DRYING% |
≤0.2 |
0.07 |
|
CHLORIDE (Cl) ppm |
≤500 |
<500 |
|
IRON(Fe) ppm |
≤30 |
<30 |
|
SULFATE ( SO4) ppm |
≤300 |
<300 |
|
HEAVY METALS ppm |
≤15 |
<15 |
|
LEAD (Pb) ppm |
≤5 |
<5 |
|
ARSENIC(As)ppm |
≤3 |
<3 |
|
CADMIUM (Cd) ppm |
≤1 |
<1 |
|
MERCURY (Hg) ppm |
≤1 |
<1 |
|
TOTAL PLATE COUNTcfu/g |
≤2000 |
<5000 |
|
YEAST AND MOLDSs cfu/g |
≤100 |
<100c |
|
E.COLI |
NEGATIVE IN 10G |
CONFIRMS |
|
STAPHYLOCOCCUS AUROUS |
NEGATIVE IN 10G |
CONFIRMS |
|
SALMONELLA |
NEGATIVE IN 10G |
CONFIRMS |

Leucine (abbreviated as Leu or L) is a branched-chain α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. Leucine is classified as a hydrophobic amino acid due to its aliphatic isobutyl side chain.
It is encoded by six codons (UUA, UUG, CUU, CUC, CUA, and CUG) and is a major component of the subunits in ferritin, astacin and other 'buffer' proteins. Leucine is an essential amino acid, meaning that the human body cannot synthesize it, and it therefore must be ingested.As a food additive, L-Leucine has E number E641 and is classified as a flavor enhancer.
Histidine: Histidine helps make a brain chemical (neurotransmitter) called histamine. Histamine plays an important role in your body’s immune function, digestion, sleep and sexual function.
Isoleucine: Isoleucine is involved with your body’s muscle metabolism and immune function. It also helps your body make hemoglobin and regulate energy.
Leucine: Leucine helps your body make protein and growth hormones. It also helps grow and repair muscle tissue, heal wounds and regulate blood sugar levels.
Lysine: Lysine is involved in the production of hormones and energy. It’s also important for calcium and immune function.
Methionine: Methionine helps with your body’s tissue growth, metabolism and detoxification. Methionine also helps with the absorption of essential minerals, including zinc and selenium.


Phenylalanine: Phenylalanine is needed for the production of your brain’s chemical messengers, including dopamine, epinephrine and norepinephrine. It’s also important for the production of other amino acids.
Threonine: Threonine plays an important role in collagen and elastin. These proteins provide structure to your skin and connective tissue. They also help with forming blood clots, which help prevent bleeding. Threonine plays an important role in fat metabolism and your immune function, too.
Tryptophan: Tryptophan helps maintain your body’s correct nitrogen balance. It also helps make a brain chemical (neurotransmitter) called serotonin. Serotonin regulates your mood, appetite and sleep.
Valine: Valine is involved in muscle growth, tissue regeneration and making energy.
Application of Amino Acids
Food industry
Amino acids are used either alone or in combination, as flavour enhancers. Monosodium glutamate is the most frequently used in food industry. Glycine and alanine also enhance taste and flavour. Tryptophan, in association with histidine, acts as an antioxidant to preserve milk powder.
Pharmaceutical industry
The amino acids can be used as medicines. Essential amino acids are useful as ingredients of infusion fluids, for administration to patients in post-operative treatment.
Chemical industry
Amino acids serve as starting materials for producing several compounds. Glycine is used as a precursor for the synthesis of glyphosate (a herbicide), while threonine is the starting material for the production of azthreonam (another herbicide).
Production Process of Amino Acids
Fermentation
In amino acid fermentation, amino acids are made by fermenting ingredients with a culture medium containing microorganisms such as probiotic bacteria. These microorganisms turn the ingredients into food and other substances that they need. An ingredient such as molasses is also added to are added to help the microorganisms multiply and make amino acids.
Enzymatic reaction proces
In the enzymatic reaction process, one or two enzymes are used to turn an amino acid precursor into the right amino acid. In this method there is no need to multiply microorganisms by converting the specific amino acid, and there is no long process starting from glucose. The enzymatic reaction process is ideal if the precursor substance has a low cost.
Packing and Shipping of Amino Acids
|
Packing |
Pp bag or kraft paper bag |
|
Shipping |
Shipped by road, sea, rail |
FAQ
As one of the leading amino acids manufacturers and suppliers in China, we warmly welcome you to buy high quality amino acids made in China here and get free sample from our factory. Good service and punctual delivery are available.
L leucine Powder, L-isoleucine, L-LEUCINE