Functional Properties of Emulsion-Type Pigskin Collagen

This study researches emulsification properties and nitrogen solubility index(NSI) of emulsiontype collagen which the molecular weight mainly distributes from 50,000 Dalton to more than 100,000 Dalton.Papers get the following results:Its solubility increases from 50% to 80% when the heating temperature initially increases,and the change is leveling off after 60℃;with the environmental pH value increasing the solubility increases from 76% to 61%.When the environmental pH value increases,its emulsification property decreases from 0.642 to 0.364,but when pH7.0 the tendency gets to flatten;as the sample concentration increases its emulsification property increases from 0.428 to 0.912,and the emulsification property is the maximum when sample concentration is 0.8%;with the electrolyte concentration increasing its emulsification property initially increases from 0.564 to 0.601,but when the electrolyte concentration is more than 0.1mol/L,its emulsi flcation property is declining as the electrolyte concentration increases.