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Updated: May 14, 2026

Visualization of Germinosomes and the Inner Membrane in Bacillus subtilis Spores
Published on: April 15, 2019
[Optical properties research of Bacillus subtilis spores by Fourier transform infrared spectroscopy]
Ming-Chun Feng1, Liang Xu, Min-Guang Gao
1Anhui Institute of Optics and Fine Mechanics, Key Lab of Environment Optics and Technology, Chinese Academy of Sciences, Hefei 230031, China. mcfeng@aiofm.ac.cn
Abstract:
The authors measured IR transmission spectra of two different concentrations of Bacillus subtilis spores by using Fourier transform infrared spectroscopy (FTIR) technology. The mass extinction cross section k of Bacillus subtilis spores was calculated according to Lambert-Beer law and the imaginary part n(i) of the complex refractive index was also calculated through k. The real part n(r) of the complex refractive index was derived from the KK (Kramers-Kronig) relationship and the experimental results were also analyzed and discussed with the study of measurement and analysis method of the complex refractive index on Bacillus subtilis spores, it is of great significance to further research the absorption and scattering characteristics, and to broaden the measurement and remote sensing technology method of the biological aerosols.
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