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Research of rheological properties of fermented milk ice cream with high content of exopolysaccharides

机译:高含量含含量的发酵乳冰淇淋流变性能研究

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As a result of scientific and technological research, the ingredient composition and the feasibility of using complex bacterial starter cultures as part of fermented milk ice cream have been substantiated. The objects of the study were samples of mixtures for the production of fermented milk ice cream were considered, which included dairy and non-dairy components, including complex bacterial starter cultures: YF-L812 (Streptococcus thermophilus, Lactobacillus bulgaricus) - control sample and YO-PROX 777 (Streptococcus thermophilus, Lactobacillus delbrueckii ssp.bulgaricus), as well as pectin stabilizers “Grindsted Pektin LC 710” and “Cremodan SE 334” with a concentration of 0.1-0.7%. It was found that a prototype sample with starter culture YO-PROX 777 has increased values of dynamic viscosity compared with the control sample with similar stabilizers and their identical concentrations, which is evidence of the accumulation of exopolysaccharides in the fermented fermented milk mixture. A prototype of fermented milk ice cream has better shape stability during temperature control, the thawing rate is reduced by 1.6 times compared to the control. The degree of overrun of the prototype fermented milk ice cream is 37.6%, which is 1.2 times higher compared to the control.
机译:由于科技研究,成分组成及使用复杂细菌起动培养物作为发酵乳冰淇淋的一部分的可行性。该研究的目的是考虑发酵乳冰淇淋的混合物的样品,其中包括乳制品和非乳制品组分,包括复杂的细菌起始培养物:YF-L812(链球菌嗜热菌,乳杆菌保加利菌) - 对照样品和哟-Prox 777(链球菌嗜热杆菌,Lactobacillus delbrueckii Ssp.bulgaricus),以及果胶稳定剂“磨削Pektin LC 710”和“Cremodan Se 334”,浓度为0.1-0.7%。结果发现,与具有相似稳定剂的对照样品和它们相同浓度的对照样品相比,具有起动器培养YO-Prox 777的原型样品具有增加的动态粘度值,以及它们的相同浓度,这是发酵发酵乳混合物中的外核积累的证据。在温度控制期间,发酵牛奶冰淇淋的原型具有更好的形状稳定性,与对照相比,解冻率降低了1.6倍。原型发酵乳冰淇淋的过度程度为37.6%,与对照相比的比较高1.2倍。

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