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Plants (Basel)

Title:		Volatile Constituents from Catasetum (Orchidaceae) Species with Occurrence in the Brazilian Amazon
Author(s):		de Vasconcelos FM; Andrade EHA; Teixeira LOA; Figueiredo PLB; Maia JGS;
Address:		"Programa de Pos-Graduacao em Quimica, Universidade Federal do Para, Belem 66075-110, PA, Brazil. Associacao dos Orquidofilos do Para, Parque da Residencia, Belem 66063-240, PA, Brazil. Departamento de Ciencias Naturais, Centro de Ciencias Sociais e Educacao, Universidade do Estado do Para, Belem 66050-540, PA, Brazil. Programa de Pos-Graduacao em Quimica, Universidade Federal do Maranhao, Sao Luis 65085-580, MA, Brazil"
Journal Title:		Plants (Basel)
Year:		2023
Volume:		20230205
Issue:		4
Page Number:		-
DOI:		10.3390/plants12040703
ISSN/ISBN:		2223-7747 (Print) 2223-7747 (Electronic) 2223-7747 (Linking)
Abstract:		"BACKGROUND: Catasetum Rich. ex Kunth is a genus of Neotropical orchids distributed in Central and South American regions. In the Brazilian Amazon, there are more than 60 species of Catasetum. The floral aromas of orchids are little known, particularly of Catasetum species. This work aimed to analyze the chemical constituents of the volatile concentrates of eight Catasetum specimens from the Amazon: C. alatum (1), C. albovirens (2), C. barbatum (1), C. ciliatum (2), C. galeritum (1), and C. gnomus (1). METHODS: Gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analyzed and identified the constituents of the volatile concentrates, and principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used in the multivariate statistical analysis. RESULTS: The Catasetum main constituents in descending order and above 10% were trans-geranylgeraniol, 1,4-dimethoxybenzene, linalool, 2-phenylethyl acetate, geraniol, 7-epi-1,2-dehydro-sesquicineole, 1,8-cineole, benzyl acetate, limonene, methyl salicylate, (E)-beta-farnesene, anisyl butyrate, cis-carvone oxide, cadin-4-en-10-ol, indole, alpha-pinene, and delta-cadinene. CONCLUSIONS: Multivariate statistical analysis of Catasetum species showed that C. barbatum, C. albovirens, and C. gnomus are distinct from the other studied species, while C. alatum, C. ciliatum, and C. galeritum presented the same primary classes of compounds. These results contribute to a better understanding of the genus Catasetum chemotaxonomy"
Keywords:		"1, 4-dimethoxybenzene 2-phenylethyl acetate 7-epi-1, 2-dehydro-sesquicineole benzyl acetate floral scents geraniol linalool olfactory signals principal component and hierarchical cluster analyses trans-geranylgeraniol;"
Notes:		"PubMed-not-MEDLINEde Vasconcelos, Francileia M Andrade, Eloisa Helena A Teixeira, Luiz Otavio A Figueiredo, Pablo Luis B Maia, Jose Guilherme S eng Switzerland 2023/02/26 Plants (Basel). 2023 Feb 5; 12(4):703. doi: 10.3390/plants12040703"