鸡蛋新鲜度的光特性无损检测

光学特性正越来越广泛应用于农产品质量分析、新鲜度和成熟度检测中。本研究目的是探讨光特性无损检测鸡蛋新鲜度的原理和实现方法。试验以200个不同新鲜度的鸡蛋为研究对象，在温度为(28±2)℃，相对湿度为55%的贮藏条件下，在200～800 nm光谱测量范围内对鸡蛋的新鲜度与贮藏时间的相关性进行了追踪光透射特性试验，同时对鸡蛋新鲜度与不同贮藏时间的相关性进行了分析。通过Origin 6.0对光谱透射数据的统计分析建立了透射率与波长，透射率与贮藏时间的相关数学模型，其相关系数分别为0.86和0.94，并找出了用于检测新鲜度的特征波长为465 nm。试验结果表明鸡蛋的透射特性应用于鸡蛋新鲜度检测具有可行性和快速性。

Optical nondestructive inspection of chicken-egg freshness

Optical properties are widely applied in nondestructive inspection such as quality inspection, fresh degree and maturating differentiation of agricultural products. The principle and methods of transmittance technique for nondestructive inspection of chicken-egg freshness were investigated. The relationships between the freshness and the different storage days were also analyzed. A total of 200 chicken-eggs were tested in the wavelength range of 200～800 nm and all transmittance spectra were captured in a room with at (28±2)℃ and 55% relative humidity(R.H.). Using Origin 6.0, two correlation models including transmittance and wavelengths, transmittance and different storage days were developed. The models gave a correlation coefficient of 0.86 and 0.94, respectively and the sensitive wavelength used to inspect freshness was also found at 465 nm. It has been shown that optical transmittance technique can be feasible to rapidly inspect egg freshness.