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Testing times for beta-carotene and relatives: Raman clues to cosmeceuticals

Date: Apr 1, 2011

Author: David Bradley

While cosmetic manufacturers tend to avoid producing actual medical effects in skin for fear of their products being subsumed into the pharmaceutical regulatory process, there is a need to understand how so-called "cosmeceuticals" might affect the aging process in skin. Resonance Raman spectroscopy has now been used to study non-invasively the interaction of carotenoid antioxidants with free radicals in the skin.

Read More thumbnail image: Testing times for beta-carotene and relatives Raman clues to cosmeceuticals

Journal Highlight: Raman spectroscopy for the analysis of coal: a review

Date: Mar 7, 2011

Author:

Work published on the Raman characterization of the natural organic matter of coals has been reviewed and preliminary results of the natural inorganic matter of various South African coals were reported.

Read More thumbnail image: Journal Highlight Raman spectroscopy for the analysis of coal a review

Rock and awe: Raman discredits microbial fossils

Date: Mar 1, 2011

Author: David Bradley

The oldest fossils of bacteria ever found were discovered in a rock formation in Western Australia, the discovery led to great excitement that has not abated for two decades. Until now. Raman spectroscopy now shows that what palaeontologists thought were pristine microbial fossils may not be anything more complex than chunks of ancient Australian rock.

Read More thumbnail image: Rock and awe Raman discredits microbial fossils

Golden pop: nanoparticles for SERS

Date: Feb 1, 2011

Author: David Bradley

Gold nanoparticles that resemble tiny popcorn kernels can be produced using a simple two-step process. Researchers at Jackson State University in the US have used these particles in SERS experiments to detect malignant prostate cancer at just the 50-cell level. The same particles can also be activated to kill the cells.

Read More thumbnail image: Golden pop nanoparticles for SERS

Journal Highlight: Femtosecond stimulated Raman spectroscopy

Date: Jan 31, 2011

Author:

Advances in the field of femtosecond stimulated Raman spectroscopy, a new time-resolved structural technique that provides complete vibrational spectra on the ultrafast timescale, are reviewed.

Read More thumbnail image: Journal Highlight Femtosecond stimulated Raman spectroscopy

Fast-track walking pneumonia test: SERS speeds up diagnosis

Date: Jan 5, 2011

Author: David Bradley

A new approach to testing for a common form of pneumonia using nanoparticles to boost SERS signals can cut the time to diagnosis from several days to a mere ten minutes, according to research published in the journal Plos One.

Read More thumbnail image: Fast-track walking pneumonia test SERS speeds up diagnosis

Journal Highlight: Understanding tissue specific compositions of bioenergy feedstocks through hyperspectral Raman imaging

Date: Jan 3, 2011

Author:

Hyperspectral Raman imaging was used to study the tissue/cell type specific distribution of lignin and cellulose polymers within the plant cell walls of two potential bioenergy feedstocks: corn stover and Eucalyptus globulus.

Read More thumbnail image: Journal Highlight Understanding tissue specific compositions of bioenergy feedstocks through hyperspectral Raman imaging

Sensitising Raman: Forensic and diagnostic boost

Date: Dec 1, 2010

Author: David Bradley

The efforts of forensic investigators are often stymied by the diverse and complex nature of sample mixtures they must analyse but low analyte concentration is probably the most problematic issue they must address. Now, a US team has found a way to improve Raman spectroscopy for low-concentration analysis. Their approach could also improve medical diagnosis, drug/chemical development, and in national security.

Read More thumbnail image: Sensitising Raman Forensic and diagnostic boost

Journal Highlight: Verdigris pigment: a mixture of compounds. Input from Raman spectroscopy

Date: Nov 29, 2010

Author:

The reproduction of an old recipe to obtain the pigment known as verdigris leads to a complex mixture of hydrated copper(II) acetates, which was characterised by Raman spectroscopy, Fourier transform infrared spectroscopy and X-ray diffraction.

Read More thumbnail image: Journal Highlight Verdigris pigment a mixture of compounds_ Input from Raman spectroscopy

Olive oil biophenols: Raman reveals all

Date: Nov 1, 2010

Author: David Bradley

The first report of Raman spectroscopy being used to look at chemical structures in olive oil has been published. The study establishes Raman as a rapid, non-destructive and reliable analytical technique for identifying bioactive components, such as biophenols in dietary extracts and surpasses other analytical methods.

Read More thumbnail image: Olive oil biophenols Raman reveals all
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