Qingdao Fraken International Trading Co., Ltd.
Main products:Health food/OEM Tablet/Softgel/Capsule,Vitamin C Tablet,Glucosamine Chondroitin MSM Tablet,Calcium + Vit D3 Tablet,Spirulina/Chlorella
Contact Us
  • Contact Person : Ms. Wang Helen
  • Company Name : Qingdao Fraken International Trading Co., Ltd.
  • Tel : 86-532-83899718
  • Fax : 86-532-83623236
  • Address : Shandong,Qingdao,Room 1005, 220 Yan'an Three Road
  • Country/Region : China
  • Zip : 266024

Silk amino acid

Silk amino acid
Product Detailed
Silk amino acid Sericin is a kind of protein surrounding fibroin (silk protein), yellowy powder and soluble in water positive

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.


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1).10 years experience in plant extract

2). HACCP and KOSHER certificated

3). GMP factory

4). Large quantity in stock

Product characteristics

1). extracted from the natural Onion with a special process, the whole process

  Conforms to the GMP requirements strictly

2). we have gained ISO, HACCP, KOSHER, AND GMP certificate

3). water and ethanol as solvent, ensure the safety of the product

4). complete product tracing system and technical service

SECOND------ Our main products

1.Stevia extract


2.Pomegranate extract 

ellagic acid 90%

3.Onion extract powder


4.Wolfberry extract

polysaccharide 50%

5.Olive leaf extract

30% HPLC

6.Epimedium extract

icariin 10-90%

7.Amur cork-tree extract

8.Dodder seed extract


9.Lemon balm extract

flavone 3-5%

10.Coix seed extract

GMP factory

11.Platycodon root extract

12.Hawthorn extract

GMP factory

13.Angelica extract       

14.Smoketree extract

15.Horse chestnut extract


16.Senna lesf extract

17.Polygonum extract


18.Banaba leaf extract


19.Shiitake mushroom extract

polysaccharide 20%

20.Reishi extract

polysaccharide 30%

Silk amino acid

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