بررسی پروفایل اسیدهای چرب آزاد و پایداری دوغ فرا سودمند تولید شده با استفاده از آنزیم ترانس گلوتامیناز میکروبی و لیپاز

نویسندگان
1 گروه علوم و صنایع غذایی، واحد کازرون، دانشگاه آزاد اسلامی، کازرون، ایران.
2 گروه علوم و صنایع غذایی، واحد کازرون، دانشگاه آزاد اسلامی، کازرون، ایران
چکیده
دوغ یک نوشیدنی لبنی است که در بین نوشیدنی های موجود در بازار جایگاه ویژه ای دارد. دو فاز شدن این فراورده در طول زمان نگهداری، مشکل عمده ای است که از پایین بودن pH و تجمع کازیین ها ناشی می شود. بنابراین در پژوهش حاضر کارایی آنزیم های ترانس گلوتامیناز میکروبی (در دوزهای 10، 15 و 20 ppm) و لیپاز (در دوزهای 30، 45 و 60 ppm) در پایدار سازی دوغ و تاثیر آنها بر خواص فیزیکوشیمیایی، میکروبی، حسی و اسید های چرب آزاد دوغ مورد بررسی قرار گرفت. برای مقایسه ی میانگین تیمارها از آزمون دانکن در سطح احتمال 5% استفاده گردید . تجزیه و تحلیل داده ها با استفاده از نرم افزار SPSS انجام گرفت.

نتایج، نشان داد که تیمار دهی با آنزیم های مذکور سبب بهبود پایداری شد.میزان اسید های چرب غیر اشباع در نمونه شاهد بیشتر از نمونه تیماردهی شده می باشد. نتایج حاصل از ارزیابی حسی، هیچگونه اختلاف معنی داری بین نمونه های تیماردهی شده و شاهد نشان نداد (p 0/05). اما پذیرش کلی توسط ارزیابان، با افزایش دوز آنزیم ها در دوغ افزایش یافت.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Evaluation of Free Fatty Acids Profiles and Stability of beneficial Doogh Produced Using Microbial Transglutaminase and Lipase Enzyme

نویسندگان English

Sedigheh Yazdanpanah 1
Shadi Jokar 2
1 Department of Food Scince and Technology, Kazerun Branch, Islamic Azad University, Kazerun, Iran.
2 Department of Food Scince and Technology, Kazerun Branch, Islamic Azad University, Kazerun, Iran.
چکیده English







Doogh is a dairy drink that has a special place among the drinks in the market. The two phases of this product during storage are a major problem due to the low pH and the accumulation of caseins.Therefore, in this study, the efficacy of microbial transglutaminase (at doses of 10, 15 and 20 ppm) and lipaseenzymes (at doses of 30, 45 and 60 ppm) in doogh stabilization and their effect on physicochemical, microbial, sensory and free fatty acids was investigated.To compare the mean of treatments, Duncan test was used at 5% probability level. Data analysis was done using SPSS software.

The results showed that treatment with these enzymes improved the stability.The amount of unsaturated fatty acids in the control sample is higher than the treated samples.The results of sensory evaluation showed no significant difference between treated and control samples (p> 0.05). But overall acceptance by evaluators increased with increasing dosages of enzymes in doogh.




کلیدواژه‌ها English

Dough
Transglutaminase and Lipase Enzyme
Sustainability
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