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Title: Characterization of pigmented microbial isolates for use in material applications
Authors: Corriveau, Elizabeth J.
Thornell, Travis L.
Ucak-Astarlioglu, Mine G.
Wedgeworth, Dane N.
Hanna, Hayden A.
Jones, Robert M.
Thurston, Alison K.
Barbato, Robyn A.
Keywords: ATR-spectroscopy
Coating analysis
Material analysis
Microbial analysis
Pigments (Biology)
Spectral sensitivity
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC TR-23-3
Abstract: Organisms (i.e., plants and microorganisms) contain pigments that allow them to adapt and thrive under stressful conditions, such as elevated ultraviolet radiation. The pigments elicit characteristic spectral responses when measured by active and passive sensors. This research study focused on characterizing the spectral response of three organisms and how they compared to background spectral signatures of a complex environment. Specifically, spectra were collected from a fungus, a plant, and two pigmented bacteria, one of which is an extremophile bacterium. The samples were measured using Fourier transform infrared spectroscopy and dis-criminated using chemometric means. A top-down examination of the spectral data revealed that organisms could be discriminated from one an-other through principal component analysis (PCA). Furthermore, there was a strong distinction between the plant and the pigmented microorganisms. Spectral differences resulting in samples with the highest variance from the natural background were identified using PCA loading plots. The outcome of this work is a spectral library of pigmented biological candidates for coatings applications.
Description: Technical Report
Gov't Doc #: ERDC TR-23-3
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Technical Report

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