Instrumental texture profile analysis of gelatin gel extracted from grouper skin and commercial (bovine and porcine) gelatin gels.
Mechanical compression was used to study the gelling characteristics of gelatin gels. Texture profile analysis (TPA) showed that the hardness of fish and mammalian gelatin increased significantly as the concentrations of gels increased. TPA attributes of 10% fish skin gel showed significant differences from those obtained from 20% and 30% gels. In bovine and porcine cases, such generic trends were not observed. Mechanical characteristics of 10% gels of gelatin from fish skin, determined from one cycle compression, were significantly lower than other sources of gelatin gels, while bovine and porcine gels did not show any significant differences. In the case of TPA, hardness of bovine gelatin gel was highest at 41 N for 10% gel, followed by porcine (30 N) then fish skin (5 N) gelatin gels. The gels prepared from different sources did not show any generic trends when all other mechanical attributes were considered.
Rahman
Mohammad Shafiur
MS
Department of Food Science and Nutrition, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman. shafiur@squ.edu.om
Al-Mahrouqi
Abdullah Issa
AI
D000465:Algorithms; D000818:Animals; D001492:Bass; D002417:Cattle; D019245:Compressive Strength; D004040:Dietary Carbohydrates / Q000032:analysis; D004041:Dietary Fats / Q000032:analysis; D004044:Dietary Proteins / Q000032:analysis; D004548:Elasticity; D005504:Food Analysis / Q000379:methods; D005511:Food Handling; D005524:Food Technology; D005780:Gelatin / Q000737:chemistry* / Q000302:isolation & purification; D005782:Gels; D006244:Hardness; D055595:Mechanical Phenomena; D009994:Osmolar Concentration; D018583:Pliability; D012867:Skin / Q000737:chemistry*; D013045:Species Specificity; D013552:Swine; D014867:Water / Q000032:analysis
D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins; D005782:Gels; D014867:Water; D005780:Gelatin