Determination of transgenic organisms from non-transgenic using terahertz spectroscopy and chemometrics

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• 关键词：Spectroscopy ; Sugar beet ; Terahertz ; Distinguish ; Transgenic
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：131
• 期：Complete
• 页码：885-891
• 全文大小：1543 K
• 卷排序：131

文摘

A methodology is proposed to identify transgenic sugar beet from non-transgenic ones by using terahertz spectroscopy combined with chemometric techniques in this paper. Principal component analysis (PCA) is applied to reduce the dimension and extract the feature spectrum of original spectral information. instead of original spectral information, the characteristic spectrum is selected to fed into the model of weighted linear discriminate analysis (WLDA)which an improved linear discriminate analysis method. The experimental results indicates that the terahertz spectroscopy coupled to PCA-WLDA can provide a rapid, nondestructive and reliable method to distinguish transgenic and non-transgenic sugar beets.