3. Pullulan
Microbiological source: Aureobasidium
pullulans
Chemical nature: Water soluble polysaccharide
Preservative action: It is used as a preservative
for various pharmaceutical products 91.
4. ε-Polylysine
Microbiological source: Streptomyces albulus
Chemical nature: Polypeptide
Preservative action: It is used as a food
preservative and inhibits the growth of Grampositive
and Gram-negative bacteria, yeasts,
molds, etc