Evaluation of the influence of extraction conditions on the isolation and identification of Volatile compounds from Cagaita (Eugenia dysenterica) using HS‑SPME/GC‑MS

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Abstract

The objective of this study was to explore the extraction and identification of volatile organic compounds (VOCs) present in cagaita fruit (Eugenia dysenterica). Parameters such as type of extraction fiber, agitation, extraction time and extraction temperature were investigated. Initially, the VOCs were extracted using headspace solid-phase microextraction. Then, the compounds were identified using gas chromatography coupled to mass spectrometry. Results revealed the presence of at least 26 different compounds and the polyacrylate (PA) fiber promoted the extraction of a larger number of VOCs. Regarding the PA fiber, the most efficient extraction was achieved using a 50 rpm agitation at 45 °C for 30 min. The majority were monoterpenes (34.64%) and esters (36.28%). An increase in the extraction temperature promoted the isolation of more VOCs when using carboxen/polydimethylsiloxane (CAR/PDMS) and divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fibers. However, these fibers allowed the isolation of a smaller number of VOCs. The extraction time and agitation had no significant influence.

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Silva, M. R., Bueno, G. H., Araújo, R. L. B., Lacerda, I. C. A., Freitas, L. G., Morais, H. A., … Melo, J. O. F. (2019). Evaluation of the influence of extraction conditions on the isolation and identification of Volatile compounds from Cagaita (Eugenia dysenterica) using HS‑SPME/GC‑MS. Journal of the Brazilian Chemical Society, 30(2), 379–387. https://doi.org/10.21577/0103-5053.20180187

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