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Preliminary investigation of medicinal herb adulteration using comprehensive two-dimensional gas chromatography and chemometric analysis

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Preliminary investigation of medicinal herb adulteration using comprehensive two-dimensional gas chromatography and chemometric analysis

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Título Preliminary investigation of medicinal herb adulteration using comprehensive two-dimensional gas chromatography and chemometric analysis
Autor Welke, Juliane Elisa
Damasceno, Flaviana Cardoso
Nicolli, Karine Primieri
Mentz, Lilian Auler
Caramão, Elina Bastos
Pulgati, Fernando Hepp
Zini, Claudia Alcaraz
Abstract Anise is frequently found among the ingredients described in the label of cosmetic products. However, the use of fennel instead of anise may occur due to the lower price of fennel. The main differences in volatile profile of anise and fennel fruits were, for the first time, evaluated using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometric detection (GC×GC/TOFMS) and chemometric analysis. Aproximately 950 peaks were found in chromatograms of each sample and Fisher ratio appointed 31 volatile analytes as the most discriminating between anise and fennel samples. These 31 compounds were used in principal component analysis and canonical discriminant analysis that designated seven compounds (estragole, methyl eugenol, 4,5-dehydro-isolongifolene, calamenene, linalool, β-ocimene and fenchol) as the most important to verify the use of fennel or anise in personal care products. Among these seven compounds, thrree coeluted with other compounds and were correctly identified only with the use of GC×GC/TOFMS.
Contido em Journal of the Brazilian Chemical Society. São Paulo. Vol. 26, n. 6 (June 2015), p. 1232-1246
Assunto Adulteração de alimento
Anis
Cromatografia gasosa bidimensional abrangente
Erva-doce
Quimiometria
[en] Adulteration
[en] Estragole
[en] Foeniculum vulgare
[en] GC×GC
[en] Pimpinella anisum
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/131120
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