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Molecules

Title:		Chemical Approach to the Optimization of Conditions Using HS-SPME/GC-MS for Characterization of Volatile Compounds in Eugenia brasiliensis Fruit
Author(s):		Ramos A; Nogueira LA; Silva MR; do Carmo Mazzinghy AC; Mariano APX; de Albuquerque Rodrigues TN; de Paula A; de Melo AC; Augusti R; de Araujo RLB; Lacerda ICA; Melo JOF;
Address:		"Departamento de Alimentos, Faculdade de Farmacia, Campus Belo Horizonte, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil. Departamento de Ciencias Exatas e Biologicas, Campus Sete Lagoas, Universidade Federal de Sao Joao Del-Rei, Sete Lagoas 36307-352, Brazil. Departamento de Nutricao, Pontificia Universidade Catolica de Minas Gerais, Belo Horizonte 30640-070, Brazil. Departamento de Ciencias Agrarias, Instituto Federal de Educacao, Ciencia e Tecnologia de Minas Gerais, Campus Bambui, Bambui 38900-000, Brazil. Departamento de Quimica, Campus Belo Horizonte, Universidade Federal de Minas Gerais, Belo Horizonte 35702-031, Brazil"
Journal Title:		Molecules
Year:		2022
Volume:		20220804
Issue:		15
Page Number:		-
DOI:		10.3390/molecules27154955
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"Grumixama (Eugenia brasiliensis Lam.) is a native fruit of the Brazilian Atlantic Forest, belonging to the Myrtaceae family, which designatesthe most significant number of species with food potential. It stands out due to its phytochemical characteristics because of the presence of polyphenols and volatile organic compounds. Volatile compounds are substances released by foods that give off an aroma and influence flavor. Solid-phase microextraction is a technique that allows for low-cost, fast, and solvent-free extraction, has an affinity for numerous analytes, and is easily coupled to gas chromatography. The objectives of this work were to evaluate the efficiency of different fibers of SPME (solid-phase microextraction) in the extraction of volatile organic compounds from grumixama pulp; optimize a method for extraction time, temperature, and sample weight; and to determine the characteristic volatile profile of this fruit. For the extraction of volatile compounds, three fibers of different polarities were used: polar polyacrylate (PA) fibers, divinylbenzene/carboxyne/polydimethylsiloxane (DVB/CAR/PDMS) semipolar fibers, and polydimethylsiloxane/divinylbenzene (PDMS/DVB). Fourteen volatile organic compounds (VOCs) were identified by DVB/CAR/PDMS, six by PA, and seven by PDMS/DVB through solid-phase microextraction in the headspace mode (SPME-HS). Considering the total number of compounds identified, regardless of the fiber used, and the optimization of the method, Eugenia brasiliensis presented sesquiterpene fractions (85.7%, 83.3%, and 85.7% of total VOCs) higher than the monoterpene fractions (14.3%, 16.7%, and 14.3%) for DVB/CAR/PDMS, PA, and PDMS/DVB, respectively in its composition. In addition, it was possible to verify that the fiber DVB/CAR/PDMS presented a better efficiency due to the larger chromatographic area observed when the grumixama pulp was subjected to conditions of 75 degrees C, 2.0 g, and an adsorption time of 20 min"
Keywords:		Dimethylpolysiloxanes/chemistry *Eugenia Fruit/chemistry Gas Chromatography-Mass Spectrometry/methods Solid Phase Microextraction/methods *Volatile Organic Compounds/analysis SPME fibers grumixama sesquiterpene volatile organic compounds;
Notes:		"MedlineRamos, Ana Luiza Coeli Cruz Nogueira, Laiza Andrade Silva, Mauro Ramalho do Carmo Mazzinghy, Ana Carolina Mariano, Ana Paula Xavier de Albuquerque Rodrigues, Tassia Nunes de Paula, Ana Cardoso Clemente Filha Ferreira de Melo, Angelita Cristine Augusti, Rodinei de Araujo, Raquel Linhares Bello Lacerda, Inayara Cristina Alves Melo, Julio Onesio Ferreira eng Switzerland 2022/08/13 Molecules. 2022 Aug 4; 27(15):4955. doi: 10.3390/molecules27154955"