Raman spectroscopy as a tool for polyunsaturated compound characterization in gastropod and limnic terrestrial shell specimens

被引：23
作者：
de Oliveira, Leandra N. [1 ]
de Oliveira, Vanessa E. [2 ]
D'avila, Sthefane [3 ]
Edwards, Howell G. M. [4 ]
de Oliveira, Luiz Fernando C. [1 ]
机构：
[1] Univ Fed Juiz de Fora, Dept Quim, NEEM, BR-36036900 Juiz De Fora, MG, Brazil
[2] Univ Fed Fluminense, Dept Fis & Matemat, Polo Univ Rio das Ostras, BR-28890000 Rio Das Ostras, RJ, Brazil
[3] Univ Fed Juiz de Fora, Dept Zool, BR-36036900 Juiz De Fora, MG, Brazil
[4] Univ Bradford, Sch Life Sci, Bradford BD7 1DP, W Yorkshire, England
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 114卷
关键词：
Polyenes; Raman spectroscopy; Mollusc; Psittacofulvins; CALCIUM-CARBONATE; CAROTENOIDS; PIGMENTS; SPECTRA; BIOMINERALIZATION; MICROSTRUCTURE; IDENTIFICATION; PRODUCTS; PROTEINS; POMACEA;
D O I：
10.1016/j.saa.2013.05.095
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The colours of mollusc shells were determined using the Raman spectroscopy and these analyses suggest that the conjugated polyenes (carotenoids) and psittacofulvins are the organic pigments incorporated into their skeletal structures responsible by their colorations. The symmetric stretching vibration of the carbonate ion gives rise to a very strong Raman band at ca. 1089 cm(-1) and a weak band at 705 cm(-1), for all samples; the second band characterizes the aragonite as the inorganic matrix and can be used as a marker. The specimens show bands at 1523-1500 and at 1130-1119 cm(-1), assigned to the v(1) and v(2) modes of the polyenic chain vibrations, respectively. Another band at 1293 cm(-1), assigned to the CH=CH in-plane rocking mode of the olefinic hydrogen is also observed in all samples, which reinforces the psittacofulvin compound as the main pigment present in the analyzed samples. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：541 / 546
页数：6
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