Investigations on the geometrical isomers of astaxanthin: Raman spectroscopy of conjugated polyene chain with electronic and mechanical confinement

2014 ◽  
Vol 45 (4) ◽  
pp. 299-304 ◽  
Author(s):  
Balaji Subramanian ◽  
Nadéjda Tchoukanova ◽  
Yahia Djaoued ◽  
Claude Pelletier ◽  
Mathieu Ferron ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Polyene Chain ◽  
Geometrical Isomers

The potential of Raman spectroscopy for the analysis of diagenetically transformed carotenoids

2010 ◽  
Vol 368 (1922) ◽  
pp. 3137-3144 ◽  
Author(s):  
Craig P. Marshall ◽  
Alison Olcott Marshall
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectra ◽  
Organic Material ◽  
Polyene Chain ◽  
Biological Origin ◽  
Raman Spectroscopic ◽  
Hydrogenation Reactions ◽  
Derivatives Of ◽  
Β Carotene

Recently, carotenoids have received much attention as target compounds for astrobiological prospecting principally because they are a group of molecules that display unique diagnostic Raman spectra that can be assigned to organic material of unequivocal biological origin. However, no work has been performed on assessing the potential of Raman spectroscopic detection of carotenoids from fossilized microbes. Here, we report the first Raman spectra acquired from ‘perhydro’ derivatives of β-carotene and lycopene formed by hydrogenation of the polyene chain during diagenesis, resulting in much less specific fossil hydrocarbons such as β-carotane and lycopane, respectively. We propose here that diagenetically altered carotenoids formed by hydrogenation reactions during the fossilization processes also provide unique diagnostic spectra that can be interpreted as a biological signature.

Raman spectroscopy and X-ray diffraction of lithium niobate at temperatures up to 1300○-4.80pt○C

2005 ◽  
Vol 126 ◽  
pp. 101-105 ◽  
Author(s):  
B. Moulin ◽  
L. Hennet ◽  
D. Thiaudière ◽  
P. Melin ◽  
P. Simon
Keyword(s):  
Raman Spectroscopy ◽  
Lithium Niobate ◽  
X Ray Diffraction ◽  
X Ray

Raman spectroscopy using a gas laser

1965 ◽  
Vol 26 (11) ◽  
pp. 620-626 ◽  
Author(s):  
J.P. Russell
Keyword(s):  
Raman Spectroscopy ◽  
Gas Laser

OBSERVATION OF PRETRANSITIONAL EFFECTS ON THE SHAPE OF THE E2 (17 cm-1 ) OPTICAL MODE IN β-Ag1 BY RAMAN SPECTROSCOPY

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-776-C6-778
Author(s):  
E. Cazzanelli ◽  
A. Fontana ◽  
G. Mariotto ◽  
F. Rocca ◽  
M. P. Fontana
Keyword(s):  
Raman Spectroscopy ◽  
Optical Mode

RAMAN SPECTROSCOPY IN GUIDED OPTICAL WAVES

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-501-C10-503 ◽  
Author(s):  
J. D. Swalen ◽  
J. F. Rabolt
Keyword(s):  
Raman Spectroscopy ◽  
Optical Waves

A POWERFUL TOOL TO STUDY COLLISIONAL PHENOMENA AND FOR COMBUSTION APPLICATIONS : THE HIGH RESOLUTION STIMULATED RAMAN SPECTROSCOPY

1987 ◽  
Vol 48 (C7) ◽  
pp. C7-761-C7-762
Author(s):  
B. LAVOREL ◽  
G. MILLOT ◽  
R. SAINT-LOUP ◽  
M. L. GONZE ◽  
J. SANTOS ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Stimulated Raman

Raman Spectroscopy: A New Tool for the “Skull Base” Surgeon?

Skull Base ◽  
2009 ◽  
Vol 19 (01) ◽  
Author(s):  
S. Koljenovic ◽  
T.C. Schut ◽  
A.J.P.E. Vincent ◽  
J.M. Kros ◽  
G.J. Puppels
Keyword(s):  
Raman Spectroscopy ◽  
Skull Base
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