Some physical properties of milk powders
Some physical properties of milk powders
复制标题
奶粉的一些物理特性
DOI：
--
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
J. Tuohy
中科院分区：
文献类型：
--
作者：
J. Tuohy
给出了普通脱脂奶粉、速溶脱脂奶粉、全脂奶粉和加脂奶粉的一些物理性质的数据;堆积密度（包装、充气、平均和工作）、压缩性、休止角、空气中的湿度、粒度分布（筛分分析、均匀系数和分布指数）和重构性质（润湿性、润湿性和溶解度指数）。充气体积密度范围为0.30-0.62 g/cm 3，而填充体积密度范围为0.44-0.85 g/cm 3，压缩率范围为32- 40%。平均粒度（累积分布的中值）范围为常规SMP的85 μ m至230-250 μ m|我是FFMP。SMP在空气中的分散性（18-20%）比含脂肪粉末（7-11%）更好。休止角为33？- 38岁？40的SMP？五十八？对于含脂肪的粉末和在中试规模的输送试验中，观察到脱脂粉末更易流动。通常，在实验条件下的输送不会导致粒度减小，并且本发明粉末的重构性质不会受到不利影响。
Data for some physical properties of regular and instantised skim milk powder (SMP), whole milk powder (WMP) and fat-filled milk powder (FFMP) are presented; bulk density (packed, aerated, average and working), compressibility, angle of repose, dispersibility in air, particle size distribution (sieve analysis, coefficient of uniformity and distribution index) and reconstitution properties (wettability, dispersibility and solubility index). Aerated bulk density ranged from 0.30-0.62 g/cm3 compared with the range 0.44-0.85 g/cm3 for packed bulk density and compressibility ranged from 32-40%. Mean particle size (median value of cumulative distribution) ranged from 85 pm for regular SMPs to 230-250 |im for FFMPs. SMPs were more dispersible in air (18-20%) than the fat-containing powders (7-11%). The angle of repose ranged from 33?-38? for SMPs to 40?-58? for the fat-containing powders and in a pilot-scale conveying trial the skim powders were observed to be more flowable. In general, conveying under the experimental conditions did not result in particle size reduction and the reconstitution properties of the instant powders were not adversely affected.