| 摘要 |
PURPOSE: A process for preparing gelatin from a fish is provided, thereby preparing high quality gelatin having high intensity and viscosity suitable for the production of hard capsules. CONSTITUTION: A process for preparing gelatin from a fish comprises the steps of: treating dried fish scales with alkali having pH 12.0 to 13.6; treating the alkali treated fish scales with acid having pH 1.3 to 2.5; extracting the acid treated fish scales with water having pH 5.5 to 6.5 at 45 to 55 deg. C in a tank; and filtering, concentrating and drying the extracted gelatin solution, wherein the alkali treatment time is 24 to 48 hours; the acid treatment time is 18 to 28 hours; and the water extracting time is 6 to 10 hours; the filtration process is carried out by using pulp in the first and second filtration and carbon filter in the third filtration; the concentration process is carried out by using two-step membrane system; and a sterilization process at 142 deg. C may be optionally carried out after the concentration process. |
