با همکاری انجمن علوم و صنایع غذایی ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 -

2 دانشگاه تبریز

3 تبریز

چکیده

در این تحقیق، اثر سه تیمار کنسانتره پروتئین آب پنیر (WPC) ( در 5 سطح 7/0، 125/1، 75/1، 375/2 و 8/2 درصد) و کازئینات سدیم (SC) (در 5 سطح /0، 125/1، 75/1، 375/2 و 8/2 درصد) بعنوان جایگزین تخم مرغ و کربوکسی متیل سلولز (CMC) ( در5 سطح 066/0، 1/0، 15/0، 2/0 و 234/0 درصد) به عنوان پایدارکننده بر ویژگی های رئولوژیکی نوسانی و حسی سس سالاد بررسی شد. نتایج رئومتری در قالب طرح مرکب مرکزی (CCD) بررسی و به روش سطح پاسخ (RSM) مدل سازی و تجزیه شد. نتایج آنالیز واریانس نشان دادکه مقادیر P در سطح 95% برای مدل ها معنی دار و برای فاکتور عدم برازش غیر معنی دار بود. بنابراین کفایت مدل ها برای برازش داده ها قابل قبول بود. با توجه به نتایج بدست آمده، نقطه بهینه غلظت متغیرهای مستقل برای تولید سس سالاد با بالاترین ویژگی های رئولوژیکی،بصورت 27/2% WPC، 27/2% SC و 23/0% CMC به دست آمد. هم چنین ارزیابی حسی با شش تیمار حاصل از پیش آزمونها (صورت پذیرفته روی ویژگی های فیزیکو-شیمیایی و پایداری سس سالاد) و در مقایسه با نمونه شاهد تهیه شده با تخم مرغ، انجام شد. نتایج مقبولیت کلی نمونه ها حاکی از آن بود که بین نمونه شاهد تهیه شده با تخم مرغ و نمونه های بهینه تهیه شده با جایگزین ها تفاوت معنی داری وجود ندارد. بنابراین پروتئین های شیر می‌توانند بعنوان جایگزین مناسبی برای تخم مرغ در تهیه سس سالاد مورد استفاده قرار گیرد.

کلیدواژه‌ها

عنوان مقاله [English]

The Effect of Whey Protein Isolates, Sodium Caseinate and Carboxymethyl Celloluse on Sensory and Oscillatory Rheological Properties of Salad Dressing

نویسندگان [English]

  • Arezu Salmanpour 1
  • Babak Ghanbarzadeh 2
  • Mahood Sowti Khiabani 3
  • Seyed Hossein Jalali

1 -

2 University of Tabriz

3

چکیده [English]

In this research, the effects of three variables, whey protein concentrate, WPC (0.7- 2.8%), sodium Ceinate, SC (0.7-208%) as a substitute for egg and carboxymethyl cellulose, CMC (0.66-0.234 % w/w) as thickening agent on sensory (taste and texture) and rheological (Complex viscosity, η* , Storage modulus, G´ and Loss modulus, G˝ ) properties of salad dressing 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 no 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 rheological properties were 2.27% WPC, 2.27% SC and 0.2341% CMC. The sensory evaluation of six treatments with improved physicochemical properties and stability of salad dressing (data not shown) and control sample (prepared with eggs) was carried out. The results suggest that there is no significant difference in the overall acceptability between control samples and samples prepared with the alternatives. So milk proteins can be used as a suitable substitute for egg in the salad dressing.

کلیدواژه‌ها [English]

  • Salad dressing
  • Rheological Properties
  • Sensory Properties
  • Response surface methodology
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