测试部位对猕猴桃近红外光谱响应特性的影响

应用近红外光谱漫反射技术,采集猕猴桃赤道附近不同测试部位的近红外光谱,对不同测试部位的平均吸光度和噪声进行差异性分析,对不同测试部位的近红外光谱波峰位置、不同波长处的吸光度以及近红外光谱糖度定量分析模型的预测精度进行了单因素方差分析.同一猕猴桃在赤道附近的不同测试部位,其近红外光谱平均吸光度及噪声的波动性较小,波峰位置差异不显著;同一猕猴桃在相同的波峰位置处,不同测试部位的吸光度差异不显著.越是靠近长波近红外区,吸光度的相对标准偏差越大,但是从总体上看,不同波长位置、不同测试部位吸光度的离散度都不大;用不同测试部位的光谱所建立的糖度定量分析模型检测精度差异不显著.猕猴桃赤道附近不同测试部位的近红外光谱都可以用来分析整个猕猴桃的品质.

Influences of Test Locations on Sugar Content Prediction of Kiwifruit with Near-infrared Diffuse Reflectance Technique

To find reasonable position on the kiwifruit to collect near-infrared spectrum information for quality evaluation,near-infrared spectrum was collected at different locations near the equator on the kiwifruit applying the near-infrared spectrum diffuse reflection technology.Difference analysis on the average absorbance and the noise of the spectrum on the tested locations was carried out.The single factor variance analysis was conducted to the near-infrared spectrum wave ridge position and the absorbance at ...