• Spectroscopy and Spectral Analysis
  • Vol. 33, Issue 9, 2354 (2013)
WEN Zhen-cai1、2、*, SUN Tong3, GENG Xiang4, and LIU Mu-hua3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
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    DOI: 10.3964/j.issn.1000-0593(2013)09-2354-05 Cite this Article
    WEN Zhen-cai, SUN Tong, GENG Xiang, LIU Mu-hua. Discrimination of Pressed and Extracted Camellia Oils by Vis/NIR Spectra Combined with UVE-PLS-LDA[J]. Spectroscopy and Spectral Analysis, 2013, 33(9): 2354 Copy Citation Text show less

    Abstract

    Camellia oil is a special and high quality edible oil in China, and quality of pressed camellia oils is superior to extracted camellia oils. The objective of the present research was to discriminate pressed and extracted camellia oils by visible/near infrared (Vis/NIR) spectroscopy. The transmission spectra of pressed and extracted camellia oil samples were acquired using a QualitySpec spectrometer in the wavelength range of 350~1 800 nm. Uninformative variable elimination (UVE) was used to select informative wavelength variables, and eliminate uninformative wavelength variables, then partial least squares combined with linear discriminant analysis (PLS-LDA) was used to develop classification model. At last, the classification model was used to discriminate 26 samples in the prediction set. The results indicate that UVE-PLS-LDA is an efficient discrimination and classification method, pressed and extracted camellia oils can be discriminated well by the classification model developed by UVE-PLS-LDA, the accurate rate is 100% for both samples in the calibration and prediction sets. So, Vis/NIR spectra combined with UVE-PLS-LDA is an effective method for discriminating pressed and extracted camellia oils.
    WEN Zhen-cai, SUN Tong, GENG Xiang, LIU Mu-hua. Discrimination of Pressed and Extracted Camellia Oils by Vis/NIR Spectra Combined with UVE-PLS-LDA[J]. Spectroscopy and Spectral Analysis, 2013, 33(9): 2354
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