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Product Name L-Methionine Powder
Other Names (S)-2-Amino-4-(methylthio)butanoic acid, Methionine, L-2-Amino-4-(methylthio)butyric acid, (S)-Methionine, (S)-2-Amino-4-methylthiobutanoic acid, L-Met
CAS Number 63-68-3
Molecular Formula C5H11NO2S
Molecular Weight 149.21 g/mol
Applications Personal Care, Dietary Supplements, Functional Foods, Animal Nutrition, etc.
Package 1kg,5kg/bag, 25kg/drum


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What Is Methionine?

Methionine is a key amino acid not endogenously synthesized by the human body, necessitating its exogenous intake. Peptides are fundamental protein constituents and crucial in various biological processes.

Chemically classified as an alpha-amino acid, methionine consists of an amino group (-NH2), a carboxyl group (-COOH), and a side chain containing a sulfur atom (-SCH3). It is denoted by the single-letter code “M” and the three-letter code “Met.”

Methionine serves several essential functions. Firstly, it is involved in protein synthesis, acting as the initial amino acid in constructing protein chains. It makes it necessary to grow, repair, and maintain body tissues.

Secondly, methionine is a precursor for S-adenosylmethionine (SAM), which is involved in various methylation reactions. Methylation is vital in gene expression, cellular signaling, detoxification, and other metabolic processes. It helps regulate the activity of genes, contributes to the formation of specific molecules, and supports the breakdown and elimination of harmful substances in the body.

Additionally, methionine contributes to antioxidant activity through the production of glutathione. Glutathione is a highly effective antioxidant that safeguards cells from free radical-induced oxidative injury. It helps maintain cellular health, supports the immune system, and may have a role in preventing chronic diseases.

Methionine also plays a role in lipid metabolism. It aids in the synthesis of phospholipids, which are essential components of cell membranes. Additionally, methionine is involved in the production of choline, which is necessary for the metabolism of fats and cholesterol. It highlights methionine’s importance in maintaining healthy lipid levels in the body.

Good dietary methionine sources include meat, fish, poultry, dairy products, eggs, nuts, seeds, and legumes. To support proper bodily functions, it is vital to ensure a well-balanced diet to meet the body’s needs for all essential amino acids, including methionine.

What Types Does Methionine Have?

Methionine primarily exists in two enantiomeric forms: L-methionine and D-methionine.

L-Methionine is the naturally occurring and biologically active form of methionine. It is commonly found in dietary sources and is the form utilized by the body for various physiological processes. L-methionine is involved in protein synthesis, methylation reactions, antioxidant activity, and other functions.

D-Methionine, on the other hand, is the mirror-image isomer of L-methionine. It is not naturally occurring in the body or commonly found in dietary sources. D-methionine is primarily used in laboratory research and pharmaceutical applications. It may have distinct properties and uses compared to L-methionine.

It’s worth noting that in most contexts when referring to methionine, it generally refers to L-methionine unless otherwise specified. L-methionine is commonly discussed with dietary intake, nutritional supplements, and its roles in the body.

Common Pure L Methionine Powder Specifications

Pure L-Methionine powder is typically available in various purities.

  1. Bulk L-Methionine ≥ 98% pure powder
  2. Bulk L-Methionine ≥ 99% pure powder
  3. Bulk L-Methionine ≥ 99.5% pure powder
TypeAmino acid
AppearanceWhite crystalline powder
Content≥ 99%
Purity≥ 99%
Particle SizeFine powder
Other IngredientNone
CertificationsGMP, ISO 9001
Water Content≤ 1%
Test   MethodHPLC, Titration
MOQ (minimum order quantity)1kg
SampleAvailable (10-20g/bag)
OEM ServiceAvailable, such as capsules, tablets, pills, etc.
ODM ServiceAvailable
Private LabelAvailable
Contract ManufacturingAvailable

What Is The Source Of L-Methionine Powder?

L-Methionine powder, a form of the amino acid methionine, can be sourced from various natural and synthetic methods.

The primary natural source of L-Methionine is protein-rich foods. Foods such as meat, poultry, fish, eggs, dairy products, nuts, seeds, legumes, and grains contain varying amounts of methionine. Extracting L-Methionine from these natural sources involves isolating and purifying the amino acid through hydrolysis or enzymatic reactions.

Synthetic production methods are also employed to produce L-Methionine powder. These methods involve chemical synthesis in a laboratory setting. Synthetic L-Methionine is typically made through fermentation or chemical transformations, starting from precursor molecules. Synthetic L-Methionine has the same chemical structure and properties as naturally occurring L-Methionine.

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What are the L-Methionine benefits?

L-Methionine offers several potential benefits to the body. Here are some of the commonly discussed benefits:

  1. Protein synthesis: As an essential amino acid, L-Methionine is crucial for protein synthesis, necessary for the growth, repair, and maintenance of body tissues. It ensures an adequate supply of methionine for building and maintaining muscle, organs, skin, hair, and nails.
  2. Methylation reactions: L-Methionine is a precursor for S-adenosylmethionine (SAM), which is involved in methylation reactions. Methylation is vital in various processes, including gene expression, cellular signaling, detoxification, and neurotransmitter synthesis. By supporting methylation, L-Methionine helps regulate biological functions and maintain overall health.
  3. Antioxidant activity: L-Methionine contributes to producing glutathione, a powerful antioxidant. Glutathione helps protect cells from oxidative damage caused by free radicals. L-Methionine has been found to aid in maintaining cellular health by counteracting the detrimental effects of free radicals. As a result, it may mitigate the incidence of chronic illnesses linked to oxidative stress.
  4. Liver function: L-Methionine has been suggested to support liver health. It synthesizes phospholipids, essential for maintaining the structural integrity of liver cell membranes. L-Methionine also aids in the liver’s detoxification processes by supporting the production of molecules that eliminate toxins.
  5. Mood and brain function: L-Methionine serves as a precursor for neurotransmitters, namely dopamine, serotonin, and norepinephrine, which regulate an individual’s mood, emotions, and overall mental well-being. Several studies indicate that administering L-Methionine may benefit mood disorders, including depression and anxiety.

Who is the best bulk pure L-Methionine supplier?

Discover the secret to top-quality bulk pure L-Methionine: Nutri Avenue! We pride ourselves on being the best supplier in the market. Our unwavering commitment to purity, stringent quality control, and unmatched customer satisfaction guarantees you the finest L-Methionine for all your needs. Choose Nutri Avenue and experience excellence today!

How To Manufacture L-Methionine Powder?

The manufacturing process of L-Methionine powder typically involves the following steps.

L-methionine powder manufacturing process


L-Methionine synthesizes proteins, which are essential for hair growth and maintenance. It offers the vital constituents required for synthesizing keratin, the fibrous protein that constitutes the architectural framework of the hair.

L-Methionine is not typically considered a fat burner. While it plays a role in lipid metabolism and the breakdown of fats, its impact on weight loss or fat burning is insignificant.

L-Methionine is a naturally occurring amino acid not expressly subject to FDA approval as a dietary ingredient. However, nutritional supplements containing L-Methionine may fall under FDA safety, labeling, and quality control regulations.

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