Journal
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
Volume 107, Issue 1, Pages 90-94Publisher
SOC BIOSCIENCE BIOENGINEERING JAPAN
DOI: 10.1016/j.jbiosc.2008.10.001
Keywords
Pollen; Pollen counting; Pollen classification; Autofluorescence; Microscopic image analysis; Hay fever
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A new method to classify pollen species was developed by monitoring autofluorescence images of pollen grains. The pollens of nine species were selected, and their autofluorescence images were captured by a microscope equipped with a digital camera. The pollen size and the ratio of the blue to red pollen autofluorescence spectra (the B/R ratio) were calculated by image processing. The B/R ratios and pollen size varied among the species. Furthermore, the scatter-plot of pollen size versus the B/R ratio showed that pollen could be classified to the species level using both parameters. The pollen size and B/R ratio were confirmed by means of particle flow image analysis and the fluorescence spectra, respectively. These results suggest that a flow system capable of measuring both scattered light and the autofluorescence of particles could classify and count pollen grains in real time. (C) 2008, The Society for Biotechnology, Japan. All rights reserved.
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