Spectroscopy and Spectral Analysis, Volume. 38, Issue 8, 2529(2018)

Study on the Geographical Traceability of Boletus Tomentipes Using Multi-Spectra Data Fusion

ZHANG Yu1,2, LI Jie-qing1, LI Tao3, LIU Hong-gao1, and WANG Yuan-zhong2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    Currently, since the domestic and international food marketing on the safety supervision and traceability system is defective, as well as false labels used by agency, situation on the food safety is becoming more and more serious. In order to enhance food safety, it’s essential to establish a fast and efficient geographical traceability method to protect the agricultural brand of Yunnan plateau. A total of 77 fruit bodies of Boletus tomentipes were collected from 8 geographical origins. Raw of ultraviolet-visible (UV-Vis) and Fourier transform infrared (FTIR) spectra were preprocessed by multiplicative scatter correction (MSC), standard normal variate (SNV), second derivative (2D), Savitzky-Golay (SG) smoothing. Based on pretreatment of UV and FTIR spectra, low-level and mid-level data fusion strategy combined with partial least squares discriminant analysis (PLS-DA) and support vector machine (SVM) were used to identify Boletus in different regions. The results indicated that: (1) that the best pretreatment, was SNV+2D with highest R2Y (61.58%) and Q2 (95.09%) for UV-Vis spectra, and MSC+2D with highest R2Y (50.85%) and Q2 (82.16%) for FTIR spectra; (2) For UV-Vis, FTIR spectra, low-level and mid-level data fusion, the number of error samples in the classification of PLS-DA and SVM analysis were 24, 6, 2, 2, and 6, 1, 1, 0, respectively; (3) In the mid-level data fusion, the best classification of SVM with none error sample was better than that of the PLS-DA with 2 error samples; (4) The classification of HCA analysis in the mid-level data fusion with 4 error samples had the better performance than that in the low-level data fusion with 1 error sample. In addition, HCA analysis of mid-level data fusion showed that the distance of samples collected from same area were longer than that collected from different sites. It indicated that the differences of samples collected from different sites in the same area were less than that collected from different regions. Those results indicated that mid-level data fusion combined with SVM model using UV-Vis and FTIR spectroscopy can accurately identify Boletus collected from different geographical origins. It will provide a new strategy on the research of geographical traceability of wild edible fungus.

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    ZHANG Yu, LI Jie-qing, LI Tao, LIU Hong-gao, WANG Yuan-zhong. Study on the Geographical Traceability of Boletus Tomentipes Using Multi-Spectra Data Fusion[J]. Spectroscopy and Spectral Analysis, 2018, 38(8): 2529

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    Paper Information

    Received: Sep. 1, 2017

    Accepted: --

    Published Online: Aug. 26, 2018

    The Author Email:

    DOI:10.3964/j.issn.1000-0593(2018)08-2529-07

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