plant extract,Ingredients

Silk Amino Acids Powder

Appearance: light yellow powder
Other name: Silk Amino Acid, Silk Amino Acid power, Silk Amino Acids, Silk Amino Acids powder, SAAs

Source: natural silk

Water solubility: 100% water soluble

Certificates: ISO9001, HALAL, KOSHER

Molecular weight: about 90 Da

Main components: glycine, alanine, serine

Application range: cosmetics, health care products, food, sports nutrition and bodybuilding

Description:

Silk amino acids, also known as Fibroin-90 or Silk Essence, are mixed amino acids obtained through the enzymatic hydrolysis of silk fibroin. Due to their extremely small molecular weight of about 90 Da, silk amino acids powder can be absorbed rapidly without undergoing complex digestion, offering significantly higher bioavailability than conventional protein sources. The material is fully soluble in water and contains more than 83% glycine, alanine and serine, which are essential amino acids involved in protein formation, collagen synthesis and cellular metabolism. With excellent solubility, compatibility and skin permeability, silk amino acids are widely used in cosmetics, personal care formulations, nutritional supplements, functional foods and sports-related products. Their unique rapid absorption characteristics make silk amino acids suitable for applications requiring efficient amino acid delivery, especially in fields where endurance, lean muscle maintenance and metabolic performance are important. Silk amino acids bridge the gap between cosmetic bioactivity and performance nutrition science, making them one of the few amino acid ingredients capable of enhancing both physical appearance and athletic functionality.
Silk amino acids powder derived from enzymatically hydrolyzed silk fibroin, featuring low molecular weight amino acids rich in glycine, alanine and serine, with high water solubility for cosmetic, food and sports nutrition formulations

Specification:

Items	Silk Amino Acids Powder	Silk Amino Acid Liquid
Characters	Creamy white powder, easily dissolving in water and has sweet taste	faint yellow transparent liquid, with sweet taste
Identify	Ninhydrin reaction is positive	Ninhydrin reaction is positive
Total Nitrogen (%)	≥15	≥3
Drying Shrinkage (%)	≤4
Residue on Ignition (%)	≤3	≤1
Solid Content (%)		20%
PH Value	4.5.0-6.5	4.5.0-6.5
Total Content of Glycine, L-Alanine, L-Serine (%)	≥83	≥83
Heavy Metal (recorded with pb) /(mg/kg)	≤5	≤1
Arsenic (mg/kg)	≤0.5	≤0.1
Total Bacterial Count (CFU/g)	≤100	≤1000
Coliform (MPN) (entity/100g)	≤30	≤30
Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus)	Not Detectable	Not Detectable

Function:

1. Silk amino acids provide fundamental elements for protein synthesis and tissue regeneration, helping the body recover after physical exertion, reducing fatigue and supporting the maintenance of muscle structure. Their rapid absorption profile enables efficient nutrient utilization during periods of increased physiological need.

2. The amino acid composition consisting of glycine, alanine and serine participates in essential metabolic reactions, including those related to glutathione formation, cardiovascular support, neurological balance and detoxification pathways. In the human body, these amino acids contribute to energy conversion, stability of cellular activities and overall metabolic health.

3. Silk amino acids can penetrate into the skin and engage in enzyme-related activities that improve moisture retention, elasticity, texture and appearance. They assist in inhibiting melanin formation, promoting hydration and participating in collagen-related functions, which benefits products designed for anti-aging, nourishment and visual enhancement.

Silk amino acids powder produced from natural silk cocoons, offering rapid absorption, skincare benefits, and lean muscle support.

Application:

1. Cosmetics field

Silk amino acids are used in cosmetics and skin care products as whitening, moisturizing and anti-aging ingredients. They inhibit melanin formation, improve skin moisture retention and enhance skin nourishment.

2. Health care products field

Silk amino acids provide essential amino acids required by the human body. They can be absorbed by body tissues and support metabolic balance, antioxidant capacity and overall physical well-being.

3. Food field

Silk amino acids are used as a nutritional fortifier in dairy products, beverages, snacks and functional foods to increase protein utilization and improve the nutritional value of food.

4. Sports nutrition and bodybuilding field

Silk amino acids are applied in performance-oriented supplements due to their rapid absorption characteristics, helping improve endurance, enhance workout efficiency, support lean muscle development and accelerate post-training recovery.
Silk amino acids compared with silk peptides, highlighting lower molecular weight, free amino acid structure, high water solubility, and suitability for beverages, cosmetics, and sports nutrition formulations.

Silk amino acids compared with silk peptides, highlighting lower molecular weight, free amino acid structure, high water solubility, and suitability for beverages, cosmetics, and sports nutrition formulations.

Silk Amino Acids – FAQ Section

1. What are silk amino acids?

Silk amino acids are low-molecular-weight mixed amino acids produced through enzymatic hydrolysis of natural silk fibroin, mainly composed of glycine, alanine and serine.

2. What is the molecular weight of silk amino acids?

Silk amino acids have an average molecular weight of approximately 90 Da, supporting high solubility and formulation compatibility.

3. Are silk amino acids fully water soluble?

Yes, silk amino acids are 100% water soluble, making them suitable for liquid, beverage and aqueous formulations.

4. What are the main components of silk amino acids?

The primary components are glycine, alanine and serine, accounting for more than 83% of the total amino acid content.

5. What forms of silk amino acids are available?

Silk amino acids are available in both powder and liquid forms for different manufacturing and formulation needs.

6. Which industries commonly use silk amino acids?

Silk amino acids are widely used in cosmetics and personal care, functional foods, health care products, beverages, sports nutrition and bodybuilding formulations.

7. Are silk amino acids suitable for cosmetic and personal care formulations?

Yes, their small molecular size, water solubility and compatibility make them suitable for skin care and hair care formulations.

8. Can silk amino acids be used in beverages?

Yes, due to their full water solubility and neutral formulation behavior, silk amino acids are suitable for functional beverages, nutritional drinks, solid beverage powders, and liquid supplement systems.

9. Are silk amino acids used in sports nutrition and bodybuilding products?

Yes, silk amino acids are commonly incorporated into sports nutrition and bodybuilding formulations where fast-dissolving amino acid ingredients are required.

10. What quality and safety standards do silk amino acids meet?

Silk amino acids can be supplied with ISO9001, HALAL and KOSHER certifications, with controlled limits for heavy metals and microbial counts.

11. What is the difference between silk amino acids and silk peptides?

Silk amino acids consist of free amino acids with extremely low molecular weight, while silk peptides are short-chain peptides formed by linked amino acids and typically have higher molecular weight. Due to this structural difference, silk amino acids generally show higher water solubility. Silk amino acids are more suitable for beverage and food applications due to their extremely low molecular weight and full water solubility, allowing easy incorporation into drinkable and ingestible formulations, whereas silk peptides are often used in applications where peptide structure or film-forming properties are required.

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