Discrimination of Wood Biological Decay by NIR and Partial Least Squares Discriminant Analysis (PLS-DA)
YANG Zhong1,REN Hai-qing1,JIANG Ze-hui1,2*
1. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China 2. International Center for Bamboo and Rattan, Beijing 100102, China
Abstract:Extensive research has demonstrated that near infrared spectroscopy (NIR) and partial least squares discriminant analysis (PLS-DA) can be used to rapidly discriminate or detect a wide variety of food, medicine and agricultural products. The use of NIR coupled with PLS-DA to detect wood biological decay was investigated in the present paper. The results showed that the correlation between the predicted category variable of calibration and validation and the measured category variable is significant with a correlation coefficient (r) over 0.94 and low SEC and SEP (<0.17); the discriminant accuracy for the non-decay, white-rot and brown-rot decay samples are 100% (deviation <0.5) by the PLS-DA model based on the test set of samples; the discriminant accuracy by PLS-DA model is better than that by SIMCA model. It’s suggested that NIR spectroscopy coupled with PLS-DA could be used to rapidly detect wood biological decay.
Key words:Near infrared spectroscopy(NIR);Partial least squares discriminant analysis(PLS-DA);Wood;Biological decay;Discrimination
[1] WANG Li, ZHUO Lin, HE Ying, et al(王 丽, 卓 林, 何 鹰, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004, 24(12):1537. [2] LI Qing-bo, YANG Li-min, LING Xiao-feng, et al(李庆波, 杨丽敏, 凌晓锋, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004, 24(4):414. [3] YANG Zhong, JIANG Ze-hui, FEI Ben-hua, et al(杨 忠, 江泽慧, 费本华, 等). Scientia Silvae Sinicae(林业科学), 2005, 41(4):177. [4] JIANG Ze-hui, FEI Ben-hua, YANG Zhong(江泽慧, 费本华, 杨 忠). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2007, 27(3):435. [5] HUANG Lan, DING Hai-shu, WANG Guang-zhi(黄 岚, 丁海曙, 王广志). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2002, 22(3):387. [6] LU Wan-zhen, YUAN Hong-fu, XU Guang-tong, et al(陆婉珍, 袁洪福, 徐广通, 等). The Modern Analysis Technique for Near-Infrared Spectra(现代近红外光谱分析技术). Beijing: Chinese Petrolic Oil and Chemical Industry Press(北京: 中国石化出版社), 2001. [7] Rene J. Process(流程工业),2005,(10):82. [8] Curling S F, Clausen C A, Winandy J E. Forest Product Journal, 2002, 52(7/8):34. [9] Lee H L, Chen G C, Rowell R M. Holzforschung, 2004, 58:311. [10] Backa S, Brolin A, Nilsson T. Holzforschung, 2001, 55(3):225. [11] Müller U,Bammer R, Teischinger A. Holzforschung, 2002, 56(5):529. [12] YANG Zhong, JIANG Ze-hui, FEI Ben-hua, et al(杨 忠, 江泽慧, 费本华, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2007, 27(4):686.