Document Detail


NIR-FT-Raman spectroscopic analytical characterization of the fruits, seeds, and phytotherapeutic oils from rosehips.
MedLine Citation:
PMID:  18931992     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In this study nondestructive Raman spectroscopic analysis of rosehips has been conducted by laser excitation at 1064 nm, with the objective of direct measurement of different parts of the fruit, including the inside and outside of the seeds, while preserving the integrity of the more representative chemicals. Carotenoid substances are responsible for the major Raman features in the spectra of the fruit parts; analysis of the nu(1) mode (1520 cm(-1)) strongly indicates the presence of a C(9) carotene, and analysis of the main characteristic carotene band set (C=C, C-C, and C-CH(3) stretching modes at 1520, 1157, and 1007 cm(-1), respectively) suggests the presence of beta-carotene as the main constituent. Raman spectra of the seed parts show the presence of unsaturated fatty acids, which are predominant inside the seed; these spectra also reveal the fatty products content comprises cis isomers. Analysis of the CH-stretching region bands and comparison with those in the spectra obtained from linoleic acid and commercial rosehip oil indicate that the relative band intensity of the CH-stretching mode is strongly affected by the chemical environment of the fatty acid esters present in both parts (inside and outside) of rosehips seeds.
Authors:
Carlos Eduardo da Silva; Peter Vandenabeele; Howell G M Edwards; Luiz Fernando Cappa de Oliveira
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-19
Journal Detail:
Title:  Analytical and bioanalytical chemistry     Volume:  392     ISSN:  1618-2650     ISO Abbreviation:  Anal Bioanal Chem     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-11-21     Completed Date:  2008-12-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101134327     Medline TA:  Anal Bioanal Chem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1489-96     Citation Subset:  IM    
Affiliation:
Núcleo de Espectroscopia e Estrutura Molecular, Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36036900, Brazil.
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MeSH Terms
Descriptor/Qualifier:
Carotenoids / analysis
Fatty Acids, Unsaturated / analysis
Fruit / chemistry
Plant Oils / analysis*
Rosa / chemistry*
Seeds / chemistry
Spectroscopy, Near-Infrared / methods*
Spectrum Analysis, Raman / methods*
Chemical
Reg. No./Substance:
0/Fatty Acids, Unsaturated; 0/Plant Oils; 36-88-4/Carotenoids

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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