بررسی تاثیر مخلوط سه روغن سویا، آفتاب گردان، کلزا بر پایداری اکسیداتیو و خواص ارگانولپتیکی و رئولوژیکی سس مایونز کم چرب
محورهای موضوعی : فصلنامه کیفیت و ماندگاری تولیدات کشاورزی و مواد غذاییمژگان بلالی 1 , علیرضا رحمن 2 , مریم فهیم دانش 3
1 - دانش آموخته کارشناسی ارشد علوم و مهندسی صنایع غذایی، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
2 - استادیار، گروه علوم و مهندسی صنایع غذایی، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
3 - دانشیار، گروه علوم و مهندسی صنایع غذایی، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
کلید واژه: مخلوط روغن, ارزیابی حسی, ویسکوزیته, پایداری اکسیداتیو, سس مایونز کم چرب,
چکیده مقاله :
هدف از این تحقیق، ارزیابی تأثیر روغن‌های خوراکی مختلف (روغن‌های سویا، آفتابگردان و کانولا در سطح 30 درصد وزنی) بر کیفیت و فساد اکسیداتیو سس مایونز کم چرب در مدت 6 ماه تحت دمای 10 درجه سلسیوس بود. نتایج نشان داد که میزان pH و اسیدیته همه نمونه‌ها، به ترتیب در محدوده 16/3-04/3 و 019/1-932/0 درصد قرار داشت. طی دوره نگهداری، میزان pH و ویسکوزیته نمونه‌های مایونز به تدریج کاهش یافت، در حالی که میزان اسیدیته افزایش پیدا کرد. نمونه‌های حاوی 15 درصد آفتابگردان و مخلوط برابر روغن‌ها، بیشترین میزان ویسکوزیته را داشتند. همه نمونه‌ها طی زمان نگهداری، از پایداری امولسیون مناسبی برخوردار بودند. ترکیب روغن‌های مختلف، اثر معنی‌داری بر شاخص‌های اکسیداسیون سس مایونز کم چرب داشت، به طوری که کمترین میزان شاخص‌های اکسیداسیون مربوط به نمونه‌های حاوی 15 درصد و 20 درصد روغن کانولا بود. با گذشت زمان، میزان اندیس‌های پراکسید، آنیزیدین و توتوکس همه نمونه‌های مورد بررسی، به طور معنی‌داری کاهش یافت. نتایج ارزیابی حسی نشان داد که نوع روغن، اثر معنی‌داری بر طعم، بافت، احساس دهانی، بو و پذیرش کلی سس مایونز کم چرب نداشت. کمترین امتیاز رنگ مربوط به نمونه حاوی 20 درصد روغن کانولا و تمام کانولا بود. با این حال، از لحاظ مشخصات حسی، همه نمونه های مایونز قابل پذیرش بودند. در نهایت، نتایج به دست آمده نشان داد که از مخلوط روغن‌های سویا، آفتابگردان و کانولا می‌توان برای تولید سس مایونز کم چرب استفاده کرد.
The purpose of this study was to evaluate the effect of various edible oils (soybean, sunflower and canola) at %30 weight using a separate and combination of oils in seven samples on the quality and oxidative degradtaion of low-fat mayonnaise during a pediod of 6 months at a temperature of 10 degree Celicus under controlled conditions. the results showed that the pH and acidity of all samples were in the range of 3.04-3.16% and 0.932-1.019%, respectively. During the maintenance period, the pH and viscosity of the mayonnaise samples decreased gradually, while acidity increased. The samples containing %15 sunflower (A5) and the equal mixture of oils (A3) of %10 each, had the highest viscosity. All samples had a perfect emulsion stability during maintenance. Combination of different oils influnced the oxidation indices of low-fat mayonnaise significantly so that the lowest oxidation index was related to the sample containing %15 canola oil (A6). Throughoput the time, the amount of peroxide, anisidine and totox of all studied samples decreased sifnificantly. the results of sensory evaluation showed that oil type did not have a significant effect on taste, texture, sense of mouth, smell and general acceptance of low-fat mayonnaise. The lowest taste rate was for the sample containing %30 canola oil or all canola(A2), followed by a %15 canola oil sample (A6). However, all the mayonnaise samples were acceptable in terms of sensory characteristics. finaaly, according to the obtained results, the sample of %15 canola oil (A6) was considered as an optimal sample.
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