نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته کارشناسی ارشد، دانشگاه تبریز
2 استادیار، دانشگاه تبریز
3 دانشیار، دانشگاه تبریز
4 مربی، دانشگاه تبریز
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this research, the effects of three variables, whey protein concentrate, WPC (0.7- 2.8%), sodium caseinate, CAS(0.7-208%) as substitute for egg and carboxymethylcellulose, CMC(0.66-0.234 % w/w) as thickening agent on salad dressing emulsion stability during storage at room, refrigerated and frozen temperature were investigated. The central composite experimental design (CCD) was used and the data were analyzed using response surface methodology (RSM). The results of analysis of variance (ANOVA) showed that P values of all models were significant and lack of fit P values was not significant at the level of 95%. Therefore, the adequacy of models was acceptable. The results showed that the optimum level of hydrocolloids for producing salad dressing with highest stability during storage at room and refrigeration temperature were 2.8011% WPC, 1.75% CAS and 0.192% CMC and the optimum level of hydrocolloids for producing salad dressing with highest stability during freezing temperature were 1.68% WPC, 0.84% CAS and 0.84% CMC. The results indicated that using suitable concentrations of whey protein concentrate, sodiumcaseinate and carboxymethyl cellulose increased salad dressing stability during storage at room, refrigerated and frozen temperature
کلیدواژهها [English]