Abstract

In this study, the effects of using dietary fiber barley and oat β-glucan as a prebiotic on the viability of Bifidobacterium bifidum in probiotic yoghurt and properties of yogurt during storage were investigated. The survival of B. bifidum was within biotherapeutic level (> 7 log cfu/g) as a result of the prebiotic effect of barley and oat based β-glucan. The addition of β-glucan to yogurt significantly affected physicochemical properties including pH, titratable acidity (LA %), whey seperation, color (L*, a*, b*) and sensorial properties of yogurts. In conclusion, β-glucan can be used on the development of cereal-based functional dairy products with sufficient viability and acceptable sensory characteristics.

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