Nondestructive rapid determination of natural toxin concentration in potato distribution using image processing

在马铃薯加工厂中，选种和整理是根据外观颜色、特征大小、腐烂程度和绿色度等外观品质来进行的。虽然绿色马铃薯块茎在工厂里是分拣的，但PGA土豆没有分拣，因为它们的表面颜色没有变化。因此，高PGA含量的马铃薯被广泛分布并用作食品原料，本研究探讨了利用图像处理技术对马铃薯中的天然毒素含量进行无损快速检测，以确定低绿度和高PGA的存在。实验装置由光源、光纤、暗盒和高光谱图像处理器组成。测定了马铃薯表面透射光的吸收特性，讨论了PGA浓度与透射光吸光度比的关系。每天光照1小时的马铃薯比不光照的马铃薯表现出更高的吸光度比，证实了低绿度和高PGA的存在。利用吸光度一阶导数分析的结果，提出了估算PGA浓度的可能性。

In potato processing factory, selection and resorting are done by external quality like as surface color, feature size, decay and greening. Although greened potato tubers are sorted in the factory, PGA potatoes are not sorted because of their unvaried color on the surface. As the result, potatoes including high PGA concentration are distributed and used as food materials,In this study, nondestructive rapid determination of natural toxin concentration in potato is discussed by using image processing in order to confirm the existence of low greening and high PGA. The experimental apparatus is consisted of light source, optical fiber, dark box and hyperspectral image processor. Absorption characteristics of transmitted light on of the potato surfaces are measured.The relationship between PGA concentration and absorbance ratio of the transmitted light was discussed. The existence of low greening and high PGA was confirmed by the result that the potatoes one hour light exposing a day showed the higher absorbance ratio than that of non light exposing. The possibility of estimation method for the PGA concentration was suggested by using the result of the analysis of first derivation of absorbance.