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Physical, textural, and rheological properties of whipped cream affected by milk fat globule membrane protein

机译:受牛奶脂肪球膜蛋白影响的奶油的物理,纹理和流变性质

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摘要

This work aims at improving the textural and whipping properties of whipped cream by the addition of milk fat globule membrane protein. The determination of particle size distribution and average diameter of whipped cream showed that the small particle size was shifted to a larger range after milk fat globule membrane protein was added. The average particle size (d3,2) of whipped cream reached a maximum value of 5.05 µm at 1% milk fat globule membrane protein, while slowly decreased with increasing milk fat globule membrane protein levels from 2% to 5%. In addition, the partial coalescence of fat increased with the increase of milk fat globule membrane protein levels, and the correlation between the whipping time and the overrun of whipped cream was positive. The addition of milk fat globule membrane protein also altered the rheological behaviour of whipped cream, resulting in the increase of modulus G′ and the loss modulus G″. The results also indicated that higher milk fat globule membrane protein level decreased the serum loss of whipped cream while improved its stability. While milk fat globule membrane protein levels had no significant effect on viscosity, its increasing levels effectively improved the hardness, consistency, and viscosity of whipped cream.
机译:这项工作旨在通过添加乳脂肪球膜蛋白来改善奶油的纹理和鞭打性质。粒度分布的测定和搅打乳膏的平均直径显示,在加入乳脂肪球膜蛋白后,小的粒度偏移到较大的范围内。奶油的平均粒度(D3,2)在1%乳脂肪球膜蛋白下达到5.05μm的最大值,同时随着牛奶脂肪球膜蛋白水平的增加,慢慢降低,从2%达5%。此外,随着牛奶脂肪球膜蛋白水平的增加,脂肪的部分聚结会增加,搅打时间与奶油溢出之间的相关性是阳性的。添加乳脂球膜蛋白也改变了奶油的流变行为,导致模量G'和损耗模量G的增加。结果还表明,较高的乳脂球膜膜蛋白水平降低了奶油的血清损失,同时提高了其稳定性。虽然牛奶脂肪球膜蛋白水平对粘度没有显着影响,但其增加的水平有效提高了奶油的硬度,一致性和粘度。

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