利用近红外透射光谱技术测定苹果糖度的研究

利用近红外透射光谱法对苹果糖度进行检测分析,表明在600￣1100nm的波长范围内建立对苹果糖度的预测模型是可行和有效的。苹果糖度的实际化学值和NIT测定值的相关系数为0.955335,标准误差为0.241307。此种方法测定苹果的糖度仅需十几秒钟,并且样品无需任何处理,具有快速、方便、无损伤等特点,对苹果的分级具有实际的意义。

Study on measurement of an apple''''s sugar degree by near infrared transmittance spectroscopy

Calibration model for prediction of an apple's sugar degree is feasible and effective by near infrared transmittance spectroscopy in the range of 600~1100nm. The correlation between actual chemical value and NIT prediction value is 0.936605, and the bias-corrected standard error of calibration is 0.271634. The method of detecting an apple's sugar degree needs a few seconds, having the characteristic of speeding, convenience, non-destruction and so on. Samples do not need any disposal. It is significant for the sortation of apples.