Raman Spectroscopy / Ezine
Microbial Raman
Date: May 1, 2010
Author: David Bradley
Surface-enhanced Raman scattering (SERS) can be used in a new microarray approach to microbial detection that is label-free, according to researchers writing in the April issue of the journal Analytical Chemistry.
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Molecular effects of high-pressure processing on food studied by resonance Raman
Date: Apr 5, 2010
Author:
The color changes of poultry, pork, and smoked salmon following high-pressure processing were studied using the CIE L*, a*, b* system and resonance Raman spectroscopy.
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Muscling in on the mussels' grip
Date: Apr 1, 2010
Author: David Bradley
In situ Raman spectroscopy has been used to probe the chemical composition of the cuticle of a bivalve mollusc to help explain how mussels keep such a strong grip on rocky shorelines.
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Surface-enhanced Raman spectroscopy (SERS) on silver colloids for the identification of ancient textile dyes: Tyrian purple and madder
Date: Mar 1, 2010
Author:
Surface-enhanced Raman spectroscopy (SERS) was used for the identification of natural organic dyes belonging to indigoid and anthraquinone classes in archeological samples.
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Non-destructive spit test
Date: Mar 1, 2010
Author: David Bradley
Raman spectroscopy can identify samples of an unknown substance at a crime scene as human saliva during forensic analysis, according to a US study, the technique would preserve DNA evidence.
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Narrow view of photosynthesis
Date: Feb 1, 2010
Author: David Bradley
Fluorescence line-narrowing and resonance Raman properties of various chlorophyll molecules have been measured in organic solvents. The work sheds new light on one of life's most important biochemical processes - photosynthesis - and might one day allow scientists to take another step closer to emulating the reactions to trap solar energy.
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Lichen colonization of an active volcanic environment: a Raman spectroscopic study of extremophile biomolecular protective strategies
Date: Feb 1, 2010
Author:
The Raman spectra of 16 lichen specimens from eight genera growing on basaltic lava and wood substrates on new lava fields on the Kilauea volcano, Kona, Hawaii, have been analysed in terms of the pigments and biomolecules produced in this extreme environment.
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Comparison of near IR laser excitation wavelengths and its influence on the interrogation of seized drugs-of-abuse by Raman spectroscopy
Date: Jan 4, 2010
Author:
The effect of near infrared wavelengths, 785 nm, using both benchtop and portable instrumentation and benchtop 1064 nm on the Raman spectra of seized drugs-of-abuse were compared.
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Raman targets bacterial cell walls
Date: Jan 1, 2010
Author: David Bradley
Bacterial cell walls are a key target for antibiotics but they can change structure during reproduction. Now, Raman spectroscopy and atomic force microscopy have been used to home in on these changes in a bacterium and so provide important clues about the biochemical changes that occur at the cellular level.
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Rapid outdoor non-destructive detection of organic minerals using a portable Raman spectrometer
Date: Dec 2, 2009
Author:
Raman spectral signatures have been obtained for a series of organic minerals using a compact portable Raman instrument, allowing organic minerals to be used as biomarkers for future exobiological missions such as the ESA mission to Mars.
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