GELATIN FROM PARALICHTHYS OLIVACEUS RIND AND PREPARING METHOD OF THE SAME

摘要

A method of manufacturing gelatin from flatfish(Paralichthys olivaceus) skin is provided to obtain gelatin with excellent physical properties such as high gel strength. Flatfish skin is alkali treated with 0.22 to 1.78mol calcium hydroxide for 2 to 3hr, washed, acid treated with 0.10 to 0.98mol acetic acid for 2 to 3hr, washed and extracted with water at 40 to 80deg.C for 2 to 3hr to give gelatin. After the extraction process, the flatfish extract is subjected to filtering containing activated carbon treatment. The gelatin has a gel strength of 360g.cm or more using a plunger with a diameter of 10mm and a descent rate of 60mm/min at 5deg.C after 3.3% gelatin solution is gelled in a 100ml beaker. The gelatin also has a viscosity of 12.0cP or more and a melting point of 20.0deg.C or more.