Abstract
This study aimed to evaluate the impact in nutritional and rheological parameters on sheep milk ice cream by fat replacement for different prebiotic fibers (inulin, fructo-oligosaccharide, galacto-oligosaccharide, short-chain fructo-oligosaccharide, resistant starch, soluble corn fiber, and polydextrose), also consumer perception (Pivot Profile). Low caloric content, around 98kcal/100g, were observed due to prebiotic fibers supplementation; without loss on moisture, carbohydrates or protein values. Sheep milk ice creams presented a pseudoplastic behavior when submitted to flow curve analysis. Moreover, inulin and fructo-oligosaccharide have proven to be a promising alternative as fat substitutes in sheep milk ice cream formulation, due to the similar rheological properties, such as hardness, viscoelasticity and consistency. Sheep milk ice creams containing inulin or fructo-oligosaccharide were also perceived creamier and brighter than control full-fat ice sheep milk ice cream. In addition, most prebiotic ice creams were cited as sweeter than control, meaning those fibers could act as sweeteners. In conclusion, the replacement of sheep milk fat by prebiotics to manufacture sheep milk ice cream can be an effective alternative to improve the nutritional and physiological aspects due to low caloric value and functionality provided by prebiotics.
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