Gelatin from yellowfin tuna (Thunnus albacares) dorsal skin was optimized for adhesive strength to plywood using surface response methodology of a central composite design with a dependent variable of adhesive strength (Y, kgf/cm2) and two independent variables of gelatin concentration (X1, %) and hardening time (X2, hrs). From the above design, a maximum adhesive strength of 49.84 kgf/cm2 was obtained under the optimal treatment condition of 15.85% gelatin concentration and 25.68 hr hardening time. The adhesive strength under optimum conditions was 50.93 kgf/cm2. The adhesive strength of the tuna gelatin was shown to be superior to that of bovine and porcine gelatins which had adhesive strengths of 34.75 and 34.9 kgf/cm2, respectively.
Osborne K, Voight MN, Hall DE, Lancaster, PA, Advances in fisheries technology and biotechnology for increased profitability, Technomic Publishing Co, 143-153, 1990
Jamilah B, Harvinder KG, Food Chem., 77, 81, 2002
Kim JS, Cho SY, Agric. Chem. Biotechnol., 39, 134, 1996
American Society of Testing Materials, Standard test method for apparent shear strength of lap joint adhesively bonded metal specimens by tension loading, 1995
Choi SY, Korean Inst. Rub. Indust., 25, 291, 1990
Kim JS, Choi SY, Ha JH, Lee EH, Korean J. Food Sci. Technol., 27, 483, 1995