| 摘要 |
PURPOSE:To obtain the subject preservative having excellent antibacterial and antiseptic activities and composed of a partially decomposed protamine having a specific molecular weight, by partially decomposing protamine with an endopeptidase, etc. CONSTITUTION:The objective preservative composed of a partially decomposed protamine having a molecular weight of 500-3,500 can be produced by partially decomposing protamine which is a basic protein existing in the spermary of salmon, etc., with an endopeptidase or an enzyme preparation containing endopeptidase. |
