Synonym: Polylysine hydrochloride
.
ε-Polylysine is a food preservative manufactured from a fermentation process using Streptomyces albulus under aerobic conditions. It can inhibit the growth of Gram-positive and Gram-negative bacteria, yeasts, moulds, bacteria, etc.
.
ε-Polylysine is a homopolymer of L-lysine, one of the essential amino acids. It is linked by peptide bond formed with α-carboxyl of L-lysine and ε-azyl from other L-lysine.
.
ε-Polylysine is hygroscopic, light yellow power. It is soluble in water, slightly soluble in ethanol, insoluble in organic solvent such as ethyl acetate, ether, etc. The molecular of ε-Polylysine is a straight chain polymer of lysine. It can decompose to lysine in human body, and can be completely digested to absorption by the human body. ε-Polylysine can inhibit the growth of G+ and G- bacteria, yeast, mould, virus, etc., especially inhibit the G- bacteria which can’t be easily inhibited by other preservatives, such as E.coli, Salmonella, and also can inhibit the thermophilics, such as B stearothermophilus. Its activity is not affected by pH, and stable when heated (120°C for 20min). Therefore, it can be sterilized along with the raw material.
.
However, ε-Polylysine antibacterial activity may be reduced due to the binding with acidic polysaccharides, hydrochlorides, phosphates, copper ions or others. ε-Polylysine antibacterial activity can be enhanced with hydrochloric acid, citric acid, malic acid, glycine and higher fatty glycerides.
.
ε-Polylysine is food grade and meets FAO/WHO specifications. It is certified as GRAS (Generally Recognized as Safe) by the US FDA with US GRAS No.: GRN000135. Currently, ε-Polylysine has approval as a food additive in China, Korea, Japan, USA and some more countries.
.
|
ITEM
|
DESCRIPTION
|
|
Strain
|
Streptomyces albulus
|
|
Appearance
|
White to creamy yellow powder
|
|
Chemical Formula
|
Molecular Formula: [C6H12N2O]n∙HCl
Molecular Weight: 4130-5776
|
|
CAS No.
|
28211-04-03
|
|
Solubility
|
soluble in water, slightly soluble in ethanol, insoluble in organic solvent such as ethyl acetate, ether, etc.
|
|
Stability
|
Its activity is not affected by pH, and stable when heated (120°C for 20min).
|
|
Moisture
|
8.0% Max.
|
|
Heavy Metals
|
Not more than 10mg/kg
|
|
Usage
|
The additive may be applied in bakery, confectionery, culinary, dairy, fruits and vegetables, meat, poultry, seafood as a preservative.
|
|
pH
|
pH=3.0-5.0, 1% water solution
|
|
Total colony count
|
Mesophillic aerobic not more than 10 CFU/g
|
|
Listeria monocytogenes
|
Not Detected
|
|
Saimonelia
|
Not Detected
|
|
Storage
|
ε-Polylysine is stable under room temperature. Sunlight, oxidant, heavy metal will hurt the activity of it. To be stored in dry , shady and cool place(below 20°C) with sealed packing
|
|
Shelf life
|
24 months
|
.
