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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.

Read More thumbnail image: Molecular effects of high-pressure processing on food studied by resonance Raman

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.

Read More thumbnail image: Muscling in on the mussels grip

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.

Read More thumbnail image: Surface-enhanced Raman spectroscopy SERS on silver colloids for the identification of ancient textile dyes Tyrian purple and madder

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.

Read More thumbnail image: Narrow view of photosynthesis

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.

Read More thumbnail image: Lichen colonization of an active volcanic environment a Raman spectroscopic study of extremophile biomolecular protective strategies

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.

Read More thumbnail image: Comparison of near IR laser excitation wavelengths and its influence on the interrogation of seized drugs-of-abuse by Raman spectroscopy

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.

Read More thumbnail image: Raman targets bacterial cell walls

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.

Read More thumbnail image: Rapid outdoor non-destructive detection of organic minerals using a portable Raman spectrometer

Oliiiive!

Date: Dec 1, 2009

Author: David Bradley

Nutritionally useful carotenoids and phenolic compounds increase as olives grow but then decrease as they ripen. Now, researchers have demonstrated that monitoring two Raman bands can help growers keep an eye on these changes and so optimise their product for olive oil production.

Read More thumbnail image: Oliiiive
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