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"Premium Ingredient Co., Ltd specialize in producing, sales, marketing and distribution of innovative amino acids, vitamins, nutrition, food additives for more than 10 years.



With more than 10 years working experience, Premium Ingredient Co., Ltd offers highest quality products, up-to-the minute market information and trend, one-stop-shop solutions to the customers in the fields of food, beverage, diet supplements, pharmaceutical and feed cover in 120 countries and regions.



Based on the stable and continues producing, solid relationship with the factories, we can secure the higher quality, competitive prices, sustained service after sale, prompt reply and delivery in time and only delivery the products on a consistent basis from approved sources




We look forward to the opportunity to discuss with you what service Premium Ingredient co., ltd can do for you. We have confidence that our products will bring you success .

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Proline is a non-essential amino acid that is synthesized from glutamic acid in the body. It is used in the biosynthesis of proteins. L-Proline is often used to help grow healthy skin.

Premium Ingredient L-Proline

L Histidine is an essential amino acid (children should obtain it from food) needed in humans for growth and tissue repair, Histidine is important for maintenance of myelin sheaths that protect nerve cells and is metabolized to the neurotransmitter histamine.

Premium Ingredient L-Histidine

Taurine is an amino acid often added in energy drinks and functional drinks to help the body boost energy as well as supporting athletic performance.

Premium Ingredient taurine

N-Acetyl-L-Cysteine is short for NAC, is a modified form of a dietary amino acid known as L-cysteine. NAC acts as a precursor or in laymans terms, a raw material for the manufacture of the all-important endogenous antioxidant glutathione.

Premium Ingredient N-Acetyl L-Cysteine

L-Arginine is a nonessential amino acid that may play an important role in the treatment of heart disease and to increase blood flow through the coronary artery. As a health supplement claiming to improve vascular health and treat erectile dysfunction in men. L-arginine, which is promoted as a human growth stimulant, has also been used in bodybuilding.

Premium Ingredient L-Arginine

L-cysteine is as a protein amino acid. One of the main functions of l-cysteine is the promotion of stomach lining health and also the correction of situations where the absorption of essential nutrients from food sources takes place.

Premium Ingredient L-Cysteine

L-lysine is an amino acid that is essential for health. However, it cannot be manufactured naturally in the human body like other types of amino acids. Therefore, L-lysine is considered as one of the eight essential amino acids.

Premium Ingredient l-lysine base

L Valine is a branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.

Premium Ingredient L-Valine

L-Arginine Hydrochloride is a more stable form of L-arginine, one of the semi-essential Amino Acid, used in dietary supplement, used for exercise performance, erectile dysfunction, immune system performance and cardiovascular conditions, such as hypertension (high blood pressure). Ours conforms to USP, AJI, EP.

Premium Ingredient L-Arginine monohydrochloride

Premium Ingredient

"Premium Ingredient Co., Ltd specialize in producing, sales, marketing and distribution of innovative amino acids, vitamins, nutrition, food additives for more than 10 years.



With more than 10 year

Premium Ingredient - Amino Acids - Vitamins - Nutrition

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Premium Ingredient L-Cystine is the oxidized dimer form of the amino acid cysteine and has the formula (SCH₂CH(NH₂)CO₂H)₂. It is a white solid that is slightly soluble in water. It serves two biological functions: a site of redox reactions and a mechanical linkage that allows proteins to retain their three-dimensional structure. It's the main raw material of l-cysteine Hydrochloride.

L-Cystine Technical Data Sheet

L-Cystine Technical Data Sheet - Premium Ingredient

Premium Ingredient L-Cystine

L-Cystine is the oxidized dimer form of the amino acid cysteine and has the formula (SCH₂CH(NH₂)CO₂H)₂. It is a white solid that is slightly soluble in water. It serves two biological functions: a sit

Premium Ingredient L-Cystine - Knowde

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L-Cystine is the oxidized dimer form of the amino acid cysteine and has the formula (SCH₂CH(NH₂)CO₂H)₂. It is a white solid that is slightly soluble in water. It serves two biological functions: a site of redox reactions and a mechanical linkage that allows proteins to retain their three-dimensional structure. It's the main raw material of l-cysteine Hydrochloride.

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	Value	Units	Test Method / Conditions
Specific Rotation	-215 - -225	°	-
State of Solution (Transmittance)	Clear and colorless min. 98.0	-	-
Chloride	0.02	%	-
Ammonium	max. 0.02	%	-
Sulfate	max. 0.020	%	-
Iron Content	max. 20	ppm	-
Lead Content	max. 10	ppm	-
Arsenic	max. 1	ppm	-
Other Amino Acids	Conforms	-	-
loss on Drying	max. 0.20	%	-
Residue on Ignition (Sulfated)	max. 0.10	%	-
Assay	98.5-101.0	%	-
pH	5.0-6.5	-	-
Average Molar Mass	240.3	g/mol	-
Melting point	247.0	ºC	-

Premium Ingredient L-Cystine

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