ε- Biological properties of polylysine

ε- Polylysine is a peptide with antibacterial properties, and this biological preservative was first applied in food preservation in the 1980s. ε- Polylysine can be broken down into lysine in the human body, which is one of the eight essential amino acids for the human body and is also an amino acid allowed to be fortified in food by countries around the world. therefore ε Polylysine is a nutritional antibacterial agent with higher safety than other chemical preservatives, and its acute oral toxicity is 5g/kg. ε- Polylysine has a wide antibacterial spectrum, suitable for Candida acuminata, Rhodotorula, Pichia pastoris, and Rosa pastoris of the yeast genus; Gram positive bacteria include heat-resistant Bacillus fatus, Bacillus coagulans, and Bacillus subtilis; The Gram negative bacteria, such as Arthrobacter and Escherichia coli, have significant inhibitory and killing effects. Polylysine has a significant inhibitory effect on the growth of Gram positive Micrococcus, Lactobacillus bulgaricus, Streptococcus thermophilus, Gram negative Escherichia coli, Salmonella, and yeast. The composite reagent of polylysine and acetic acid has a significant inhibitory effect on Bacillus subtilis.