Volume 10, Issue 41 (2013)
FSCT 2013, 10(41): 81-90 |
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Effects of inulin on the physicochemical, rheological, sensory properties and survival of probiotics in frozen yogurt
Rezaei, R.1, Khomeiri, M. 2 , Aalami, M.2, Kashaninejad, M.2. FSCT 2013; 10 (41) :81-90
URL: http://fsct.modares.ac.ir/article-7-6387-en.html
URL: http://fsct.modares.ac.ir/article-7-6387-en.html
Abstract: (6366 Views)
In present study, effects of different levels of inulin (0, 1 and 2%) on the physicochemical and sensory properties and probiotic survival in frozen yogurt was investigated. Results showed that inulin at concentration of 1% had no effect on pH but at level 2% had significant effect on pH. Addition of inulin increased overrun and viscosity. The flow behavior of all samples showed their pseudoplastic nature; power law was the best model to predict their flow behavior. In comparison of control sample, frozen yogurts containing inulin had better melting properties and inulin at concentration of 2% increased the time of first dripping, significantly. Total acceptability of samples revealed that frozen yogurt with 2% inulin had the most appealing sensory characteristics. In terms of probiotic survival, the sample with 2% inulin significantly improved the viability of Lactobacillus acidophilus and Bifidobacterium lactis.
Received: 2010/11/28 | Accepted: 2011/10/29 | Published: 2013/09/23
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