- Inbunden (Hardback)
- Antal sidor
- 2010 ed.
- Springer-Verlag Berlin and Heidelberg GmbH & Co. K
- Hamano, Yoshimitsu (ed.)
- 62 Illustrations, black and white; VII, 250 p. 62 illus.
- 234 x 155 x 15 mm
- Antal komponenter
- 1 Hardback
- 386 g
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Amino-Acid Homopolymers Occurring in Nature2439Skickas inom 10-15 vardagar.
Fri frakt inom Sverige för privatpersoner.Microorganisms are capable of producing a wide variety of biopolymers. Homopolymer peptides, which are made up of only a single type of amino acid, are far less ubiquitous. The only two amino-acid homopolymers known to occur in nature are presented in this volume. Poly-epsilon-L-lysine is a polycationic peptide and exhibits antimicrobial activity against a wide spectrum of microorganisms. It is both safe and biodegradable and is therefore used as a food preservative in several countries. In addition, there has been great interest in medical and other applications of poly-lysine and its derivatives. In contrast, poly-gamma-glutamic acid is an unusual anionic polypeptide. It is also water soluble, biodegradable, edible, non-toxic and non-immunogenic and can be chemically modified to introduce various drugs. These features are very useful for pharmaceutical and biomedical applications. Poly-glutamic acid is also a highly attractive as a food ingredient.
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Occurrence and Production of Poly-Epsilon-l-Lysine in Microorganisms.- Biochemistry and Enzymology of Poly-Epsilon-l-Lysine Biosynthesis.- Biochemistry and Enzymology of Poly-Epsilon-l-Lysine Degradation.- Biotechnological Production of Poly-Epsilon-l-Lysine for Food and Medical Applications.- Occurrence and Biosynthetic Mechanism of Poly-Gamma-Glutamic Acid.- Enzymatic Degradation of Poly-Gamma-Glutamic Acid.- Pharmaceutical and Medical Applications of Poly-Gamma-Glutamic Acid.- Food Applications of Poly-Gamma-Glutamic Acid.