Qualitative Analysis of Fragrant Pear Class Based on Near Infrared Diffuse Reflectance Spectroscopy
MA Ben-xue1, 2, RAO Xiu-qin1*, YING Yi-bin1，SHEN Fei1, FAN Yu-xia1
1. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China 2. College of Machinery and Electric Engineering, Shihezi University, Shihezi 832003, China
Abstract：A method was developed to automatically discriminate the persistent calyx fruit and fruit without calyx of fragrant pear by means of near infrared spectroscopy (NIRS). The prediction performance of different band regions range, different principal component numbers and different preprocessing methods of the spectra (multiplicative signal correction, standard normal variate, and derivative spectra) together with discriminant analysis (DA) was also investigated, and The calibration model was established to classify the different kinds of fragrant pear. The research results for the fragrant pear classification showed that DA calibration models using these parameters with band regions between 9 091 and 4 000 cm-1 and original spectra are optimal, with the percentage of correct sample classification being 100% and 95% for the calibration and validation set，respectively.
马本学1, 2，饶秀勤1*，应义斌1，沈 飞1，樊玉霞1 . 基于近红外漫反射光谱的香梨类别定性分析[J]. 光谱学与光谱分析, 2009, 29(12): 3288-3290.
MA Ben-xue1, 2, RAO Xiu-qin1*, YING Yi-bin1，SHEN Fei1, FAN Yu-xia1 . Qualitative Analysis of Fragrant Pear Class Based on Near Infrared Diffuse Reflectance Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(12): 3288-3290.
