Determination of Brix and POL in Sugar Cane Juice by Using Near Infrared Spectroscopy Coupled with BP-ANN
WANG Xin1, YE Hua-jun1, LI Qing-tao2, XIE Jin-chun1, LU Jia-jiong2, XIA A-lin3, WANG Jian3*
1. Focused Photonics (Hangzhou)，Inc，Hangzhou 310052，China 2. Institute of Light Industry and Food Engineering，Guangxi University，Nanning 530004，China 3. Electronic Information College，Hangzhou Dianzi University，Hangzhou 310018，China
Abstract：The models of quantitative analysis of brix and pol in sugar cane juice were established by using near infrared spectroscopy (NIR) coupled with the back propagation-artifical neural network method (BP-ANN). The spectra of cane juice samples were obtained by the way of 2 mm optical length transmission and using the NIR spectrometer of 1 000-1 800 nm wavelength. Firstly, the data of original spectra were pretreated by Savitzky-Golay derivative and mean-centering. Secondly, the wavelength range of model was optimized by using correlation coefficient method coupled with the characteristic absorbance of the spectrum. Finally, the principal components, obtained by PLS dimension-reducing, were inputed into BP-ANN. The calibration models were established by calibration set and validated by prediction set. The results showed that the related coefficients (R2) of prediction for brix and pol were 0.982 and 0.979, respectively; and the standard errors of prediction (SEP) for brix and pol were 0.159 and 0.137, respectively. BP-ANN was more accurate in the predition of brix and pol compared with the partial least square method (PLS). The method can be applied to fast and accurate determintaton of brix and pol in sugar cane juice.
王 欣1，叶华俊1，黎庆涛2，谢锦春1，卢家炯2，夏阿林3，王 健3* . 近红外光谱结合人工神经网络分析蔗汁的锤度和旋光度 [J]. 光谱学与光谱分析, 2010, 30(07): 1759-1762.
WANG Xin1, YE Hua-jun1, LI Qing-tao2, XIE Jin-chun1, LU Jia-jiong2, XIA A-lin3, WANG Jian3* . Determination of Brix and POL in Sugar Cane Juice by Using Near Infrared Spectroscopy Coupled with BP-ANN . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(07): 1759-1762.
[1] YAN Yan-lu, ZHAO Long-lian, HAN Dong-hai, et al(严衍禄，赵龙莲，韩东海，等). Foundation of Near Infrared Spectroscopy and Its Application(近红外光谱分析基础与应用). Beijing: China Light Industry Press(北京：中国轻工业出版社), 2005. 29. [2] YE Hua-jun, LIU Li-peng, XIA A-lin, et al(叶华俊，刘立鹏，夏阿林，等). Chinese Journal of Scientific Instrument(仪器仪表学报), 2009, 30(3): 531. [3] QIAN Ping, SUN Guo-qin, ZHANG Cun-zhou(钱 平，孙国琴，张存洲). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2008, 28(12): 2851. [4] Lü Hui-ying, REN Yu-lin, LIU Ming-yang(吕慧英，任玉林，刘明扬). Chemical Journal of Chinese Universities(高等学校化学学报), 2007, 28(5): 847. [5] CAO Gan, TAN Zhong-wen, LIANG Ji-nan, et al(曹 干，谭中文，梁计南，等). Scientia Agricultura Sinica(中国农业科学), 2003, 36(3): 254. [6] Madsen II L R, White B E. Journal American Society of Sugarcane Technologist，2003, 23: 80. [7] LU Wan-zhen, YUAN Hong-fu, XU Guang-tong, et al(陆婉珍，袁洪福，徐广通，等). Modern Near Infrared Spectroscopy Analytical Technology(现代近红外光谱分析技术). Beijing: China Petrochemical Press(北京：中国石化出版社), 2007. 37. [8] PENG Bang-zhu, LONG Ming-hua(彭帮柱，龙明华). Transaction of the Chinese Society of Agricultural Engineering(农业工程学报), 2006, 22(12): 216. [9] LI Wei, ZHANG Shu-hui, ZHANG Qian, et al(李 伟，张书慧，张 倩，等). Transaction of the Chinese Society of Agricultural Engineering(农业工程学报), 2007, 23(1): 55. [10] YANG Nan-lin, CHENG Yi-yu, QU Hai-bin(杨南林，程翼宇，瞿海斌). Chinese Journal of Analytical Chemistry(分析化学), 2003, 31(6): 664. [11] ZHANG Yin, ZHOU Meng-ran(张 银，周孟然). Infrared(红外)，2006，27(1): 1. [12] XU Lu(许 禄). Chemometrics: Principles and Applications of the Important Method(化学计量学一些重要方法的原理及应用). Beijing: Science Press(北京：科学出版社), 2004. 23.
