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Optical properties of Erwinia herbicola bacteria at 0.190–2.50 μm
Author(s) -
Arakawa E. T.,
Tuminello P. S.,
Khare B. N.,
Milham M. E.
Publication year - 2003
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.10438
Subject(s) - pantoea agglomerans , chemistry , refractive index , pantoea , wavelength , enterobacter , measure (data warehouse) , refraction , analytical chemistry (journal) , bacteria , optics , mineralogy , chromatography , physics , escherichia coli , geology , paleontology , biochemistry , 16s ribosomal rna , database , computer science , gene
We measure the complex index of refraction of Erwina herbicola (also known as Enterobacter agglomerans or Pantoea agglomerans ) bacteria (ATTC 33243) over the spectral region from 0.190 to 2.50 μm (4000–52,632 cm −1 ). Transmission measurements are made on solid films of E. herbicola and on suspensions of the bacteria in water. These measurements, combined with spectral reflectance and Kramers–Krönig analysis, allow the determination of the real and imaginary parts over the entire wavelength interval. Accurate and consistent results are obtained for this complex and difficult to measure material. This is part of a continuing series of measurements of the optical constants of representative biological materials that are applicable to the development of methods for detection of airborne biological contaminants, where the material under study is used as a surrogate for a pathogenic agent. © 2003 Wiley Periodicals, Inc. Biopolymers (Biospectroscopy) 72: 391–398, 2003