Journal of Innovative Optical Health Sciences, Volume. 7, Issue 4, 1350062(2014)

The application of near-infrared spectra micro-image in the imaging analysis of biology samples

Dong Wang1,2、*, Yun-Sheng Ding3, Zhong-Hua Guo1, and Shun-Geng Min1
Author Affiliations
  • 1Department of Applied Chemistry College of Science, China Agricultural University Beijing 100193, P. R. China
  • 2Beijing Research Center for Agri-Food Testing and Farmland Monitoring, Beijing 100097, P. R. China
  • 3Yunnan Tobacco Company Dali Branch Yunnan 671000, P. R. China
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    In this research, suitable imaging methods were used for acquiring single compound images of biology samples of chicken pectorales tissue section, tobacco dry leaf, fresh leaf and plant glandular hair, respectively. The adverse effects caused by the high water content and the thermal effect of near infrared (NIR) light were effectively solved during the experiment procedures and the data processing. PCA algorithm was applied to the NIR micro-image of chicken pectorales tissue. Comparing the loading vector of PC3 with the NIR spectrum of dry albumen, the information of PC3 was confirmed to be provided mainly by protein, i.e., the 3rd score image represents the distribution trend of protein mainly. PCA algorithm was applied to the NIR microimage of tobacco dry leaf. The information of PC2 was confirmed to be provided by carbohydrate including starch mainly. Compared to the 2nd score image of tobacco dry leaf, the compared correlation image with the reference spectrum of starch had the same distribution trend as the 2nd score image. The comparative correlation images with the reference spectra of protein, glucose, fructose and the total plant alkaloid were acquired to confirm the distribution trend of these compounds in tobacco dry leaf respectively. Comparative correlation images of fresh leaf with the reference spectra of protein, starch, fructose, glucose and water were acquired to confirm the distribution trend of these compounds in fresh leaf. Chemimap imaging of plant glandular hair was acquired to show the tubular structure clearly.

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    Dong Wang, Yun-Sheng Ding, Zhong-Hua Guo, Shun-Geng Min. The application of near-infrared spectra micro-image in the imaging analysis of biology samples[J]. Journal of Innovative Optical Health Sciences, 2014, 7(4): 1350062

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    Paper Information

    Received: Jul. 15, 2013

    Accepted: Sep. 30, 2013

    Published Online: Jan. 10, 2019

    The Author Email: Wang Dong (wangd@nercita.org.cn)

    DOI:10.1142/s1793545813500624

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