| 摘要 |
PURPOSE:To obtain in high yield the title compound to be used as a food additive, little in harsh taste, having cholesterol level-suppressing and reducing activity, antifungal activity and antiphage activity by digesting epsilon-polylysine of a specific polymerization degree with a neutral protease. CONSTITUTION:epsilon-Polylysine of the formula ((n) is >=20) with a polymerization degree of >=20 is dissolved in water and the pH value of the resulting aqueous solution is adjusted to 6-8 with 6N HCl followed by addition of a neutral protease (e.g. denazyme AP) to be produced by Aspergillus (e.g. Aspergillus oryzae), and then hydrolysis at 40 deg.C for 24hr followed by keeping the system at 90 deg.C for 30min to deactivate the protease. The resulting liquor is put to spray drying, thus obtaining the objective epsilon-polylysine with a polymerization degree of 2-19, little in harsh taste, and useful as an additive for foods and beverages. |
