ナイシン

ナイシン 価格

MSDS Information

• Nisin

ナイシン 化学特性,用途語,生産方法

• 用途

  保存料等

• 化学的特性

  Crystals from ethanol. Derived from Streptococcus lactis Lancefield Group N.

• 使用

  Nisin is an antimicrobial agent derived from pure culture fermenta- tions of certain strains of streptococcus lactis lancefield group n. nisin preparation contains nisin, a group of related peptides with antibiotic activity. it is used to inhibit the outgrowth of clostridium botulinum spores and toxin formation in pasteurized cheese spreads and pasteurized process cheese spreads; pasteurized cheese spread with fruits, vegetables, or meats; and pasteurized process cheese spread with fruits, vegetables, or meats.

• 定義

  ChEBI: A type-A lantibiotic containing 34 amino acid residues (including lanthionine (Lan), methyllanthionine (MeLan), didehydroalanine (Dha) and didehydroaminobutyric acid (Dhb)) and five thioether bridges. It is obtained by fermentation of the bacterium L ctococcus lactis and shows particular activity against Clostridium botulinum. It is used in the production of various processed foods to suppress Gram-positive spoilage and pathogenic bacteria and so extend shelf life.

• 副作用

  Although Nisin E234 generally regarded as a very safe and effective supplement, there can be some minor side effects. Possible side effects: pruritus, nausea, and flushing. Other side effects include: pruritus, skin rash, and vomiting.

• 概要

  ペニシリンの発見以前に知られていた Streptococcus lactisの産生する抗生物質．ボツリヌス菌に対して強い活性を示し，食品添加剤としてとくにヨーロッパで乳製品に用いられる．デヒドロアミノ酸やランチオニンを含む代表的なペプチドとして知られる

• 純化方法

  This polypeptide from S. lactis is purified by crystallisation from 80% (v/v) EtOH and by countercurrent distribution. The synthetic polypeptide antibiotic can also be purified by preparative HPLC and assayed by HPLC on a Nucleosil 3007C18 (6 x 250mm) column using a MeCN—0.01M HCl gradient (30-50%), at 2%/minute, and flow rate of 1.5mL/minute to give a retention time of 8.1 minutes; or MeCN—0.3M guanidine-HCl gradient (30-50%), at 2%/minute, and flow rate of 1.5ml/minute to give a retention time of 10.9minutes. FAB-MS gave the pseudomolecular ion m/z at 3352.7 (M + H)+. It is soluble in dilute acid and is stable even on boiling. [Berridge et al. Biochem J 52 529 1952, synthesis by Fukase et al. Tetrahedron Lett 29 795 1988.]

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