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基于近红外光谱分析法的奶粉品质快速检测（Quick Determination Method of Milk Powder Quality by Near-infrared Spectroscopy）
奶粉 品质检测 近红外光谱
2009/8/11
选择11个品牌的10多种配方奶粉，共80个样品，使用PDA型近红外光谱仪采集奶粉漫反射光谱，波长范围1089～2219nm。对光谱进行了SNV、软阈小波消噪及一阶微分预处理，通过比较主成分在不同波长上的权重分布，选择不同波段建立校正模型和进行预测精度分析。结果表明，奶粉的蛋白质和脂肪的近红外光谱信息主要分布于1100～1400nm和1800～2200nm波段内，采用小波消除原始光谱的噪声能提高校正...
Glass Transition, Water Plasticization, and Lactose Crystallization in Skim Milk Powder
lactose crystallization milk powder glass transition relative humidity
2008/3/28
Effects of water content, storage time, and glass transition (physical state) on lactose crystallization and the resultant crystal forms in skim milk powder were investigated. Samples of freeze-dried ...
Physicochemical and Structural Properties of Ultrafiltered Buffalo Milk and Milk Powder
buffalo milk rennet coagulation microstructure
2008/3/27
Buffalo skim milk containing 10.20% total solids (TS), 3.96% protein, and 5.22% lactose was ultrafiltered at 50°C to 23.50% TS and 16.44% protein. Contents of TS, fat, ash, and protein increased durin...