Changsha Guanxiang Chemicals Trading Co., Ltd.
Main products:Pyrogallol,Propyl Gallate,Tannic Acid,Perilla Leaf Essential Oil,Absinthe Oil
Contact Us
  • Contact Person : Mr. Yan George
  • Company Name : Changsha Guanxiang Chemicals Trading Co., Ltd.
  • Tel : 86-731-8227 6617
  • Fax : 86-731-8219 3812
  • Address : Hunan,Changsha,Room 806, Dong Cheng Yi Pin, 629 Yuanda Yi Lu
  • Country/Region : China
  • Zip : 410016

Silk Amino Acids, Silk Essence, Silk 90

Silk Amino Acids, Silk Essence, Silk 90
Product Detailed
Silk Amino Acids Alanine, serine and glycin >85% Skin care.

Silk Amino Acids (Silk Essence)

Technical Data Sheet


The product is the water soluble mixing amino acid obtained after hydrolysis of Silk fibroin.

The average molecular weight is about 90 and the product is also called as “Silk 90”.

The product is white powder with pH value between 5 to 7 and positive ninhydrin reaction.



Requirement (Food Grade)

Requirement (Common Grade)


White or pale yellow powder, soluble in water, sweet taste.

White or pale yellow powder, soluble in water, sweet taste.


positive ninhydrin reaction

positive ninhydrin reaction

Total nitrogen

15% min

14.5% min

Weight Loss on drying

2.5% max

4% max

Residue on ignition

3.0% max

5% max

pH value



Total Glycin, L-alanine, L-serine

85% min

82% min

Heavy Metal (as Pb)

5ppm max

10ppm max


0.5ppm max

1ppm max


100 max

100 max

Coli group (MPN) (pcs/100g)

30 max

30 max

Pathogenic Bacteria

No detection

No detection



1. With silk from feed silkworm as raw materials, refined through biological process to get the mixed amino acid (silk essence), more than 85% of whose content are alanine, serine and glycin, is a functionally prominent nutrient with higher nutritional value.


2. Glycin and serine can not only be used as the essential materials of synthesizing protein in organism, but also be used as the predecessor of synthesizing the glutathione (GSH, SSG), which has certain preventive actions on heart disease and cancer. Meanwhile, the glycin also has the detoxication effects for some aromatics which can cause cancer. The rich alanine also helps promoting the metabolism of alcohol in human body and protecting liver. Moreover, tyrosine has obvious effect on preventing the old from Alzheimer disease.


3.  Silk amino acid is very easy to permeate the derma layer of skin and get absorbed, nurturing skin as well. Due to its action in the enzyme metabolism, silk amino acid can keep and adjust moisture, prevent skin from ultraviolet radiation, restrain splash generation, facilitate anti-aging for skin.

Packing:     20 kg drum

Shelf Life:   2 years in unopened container.

Process Flow Chart

Silk Amino Acids, Silk Essence, Silk 90

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