A natural preservative ε-poly-L-lysine: fermentative production and applications in food industry
ثبت نشده
چکیده
ε-Poly-L-lysine (ε-PL) is a homopolymer linked by the peptide bond between the carboxylic and the epsilon amino group of adjacent lysine molecules. It is naturally occurring, water soluble, biodegradable, edible and nontoxic towards humans and environment. ε-PL shows a wide range of antimicrobial activity and is stable at high temperatures. This review focuses on various ε-PL producing strains, screening procedure, production, synthesis, antimicrobial activity, and its various applications in food industry.
منابع مشابه
Optimization of Medium Components and Feeding Strategies for Epsilon Poly-l-lysine Production by Streptomyces Noursei Nrrl 5126
Epsilon poly-L-lysine (ε-PL) is a nontoxic biopolymer widely used in food and pharmaceutical industry. The present work reports the nutritional requirements for submerged fermentation of Streptomyces noursei NRRL 5126 using a combination of one factor at a time and statistical orthogonal array method. Two-fold increase in ε-PL productivity (74 mg/L) was observed using optimized medium containin...
متن کاملEfficient production of ε-poly-L-lysine by Streptomyces ahygroscopicus using one-stage pH control fed-batch fermentation coupled with nutrient feeding.
ε-Poly-L-lysine (ε-PL) is a homopolymer of L-lysine molecules connected between the ε amino and alpha carboxyl groups. This polymer is currently used as a natural preservative in food. Insufficient biomass is a major problem in ε-PL fermentation. Here, to improve cell growth and ε-PL productivity, various nitrogen-rich nutrients were supplemented into flask cultures after 16 h cultivation, mark...
متن کاملFermentative Production of Lysine by Corynebacterium glutamicum from Different Carbon Sources
Production of lysine by Corynebacterium glutamicum (PTCC 1532) from different agricultural by-products (molasses and pulpy waste date) was compared to glucose as raw materials. For this purpose, ammonium sulphate was selected as a constant nitrogen source. The effect of different nitrogen sources was also investigated with glucose as a constant carbon source. The production of L-lysine was exam...
متن کاملEnhancement of ε-poly-l-lysine (ε-PL) production by a novel producer Bacillus cereus using metabolic precursors and glucose feeding
Epsilon poly-L-lysine (ε-PL) is a homo-biopolymer with approximately 25-30 L-lysine residues. It is a promising natural biopolymer widely used in food and pharmaceutical industry. The present work reports enhanced production of ε-PL with a novel producer Bacillus cereus using amino acids and TCA cycle intermediates in the fermentation medium. Among the various amino acids and TCA cycle intermed...
متن کاملAntimicrobial, antioxidant, and antitumor activity of epsilon-poly-L-lysine and citral, alone or in combination
BACKGROUND Food safety is an important worldwide public health concern, and microbial contamination in foods not only leads to food deterioration and shelf life reduction but also results in economic losses and disease. OBJECTIVE The main aim of the present study was to evaluate the effect of epsilon-poly-L-lysine (ε-PL) and citral combination against Escherichia coli O157:H7 (E. coli O157:H7...
متن کامل