牛乳主要成分浓度超声快速检测技术

Ultrasonic Fast Measurement Technology for Major Components Density in Cow Milk

研究了应用超声参量和电学参量相结合,检测牛乳中主要成分浓度的理论基础和实现方法。重点讨论了牛乳超声特性参量测量方法,同时对构成测量系统必不可少的预测模型的建立方法进行了介绍,最后将超声法与参考法进行了比对。结果表明,超声法测量具有稳、准、快的特点。测量重复性变异系数(CV)优于0.02,测量相对精度小于2%,每个试样测量仅需30s,完全能够满足实际测量的需要。这一研究为乳品的无损、快速检测提供一种新的方法。

The technology has described the basic theory and implementation of assaying the major component density in cow milk by using the combination of ultrasonic and electronic parameters. It has discussed the assaying methods of ultrasonic natural parameter in cow milk especially. At the meantime, it has described the building methods of predictive model essential in the entire assay system. Finally, it has compared both ultrasonic and parametric methods. The result shows that ultrasonic method has got some advantages like stableness, correctness and quickness. The coefficient of variation for repeatability in assay is less than 0.02 and the relative accuracy is less than 2%. It only takes 30 seconds to test each sample. It can fully meet the demands of practical assay. The research provides a new method of no-wear fast assay for dairy products.