为了更好的对苹果的脆度进行检测,试验应用波长范围为643.26～985.11nm的Purespect近红外透射光谱仪对60个富士苹果的校正集样品和20个预测集样品进行了光谱扫描,比较了不同的光谱预处理方法和不同建模波段对模型的影响,最终确立的模型相关系数(Rc)为0.941,校正均方根误差(RMSEC)为0.390。对模型预测性能的验证结果表明:建立的苹果脆度模型性能较稳定,能满足实际应用的要求。

Purespect Near infrared transmittance spectroscopy with wavelength from 643.26 nm to 985.11nm were applied in scanning 60 calibration samples and 20 validation samples of Red Fuji apples(Malus domestica Borkh.).Influence of different pretreatment spectral method and different selected wavelengths on the crunchiness modeling prediction were compared.The validation test showed that the model had a correlation coefficient of 0.941 and RMSEC of 0.390.This indicated that the model established was stable and met the requirements of practical application.