Estudo químico de Annona coriacea Mart. E Xylopia aromatica (Lam.) Mart. (Annonaceae)
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Data
2015-03-26
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Universidade Federal de Goiás
Resumo
CHAPTER 01: CHEMICAL STUDY OF VOLATILE ORGANIC COMPOUNDS
Annona coriacea Mart. AND Xylopia aromatica (Lam.) Mart (Annonaceae) - In this
research was performed the study of the chemical profile of the volatile organic
compounds (VOCs) of flowers and leaves of species Annona coriacea and Xylopia
aromatica (Annonaceae) by means of extraction in vivo and in vitro, through the
techniques headspace-solid phase microextraction (HS-SPME), hydrodistillation and
characterization by gas chromatography-mass spectrometry (GC-MS). By the analysis
of the volatile fraction of flowers and leaves of A. coriacea it was observed different
VOCs, according to the coatings utilized, since the selection of the fiber becomes one of
the main factors for VOCs analysis in different vegetables parts. The chemical profile of
the flowers of X. aromatica was obtained through HS-SPME, which compared the
efficiency of in vivo and in vitro extractions, due to the higher number of VOCs present
in the floral aroma. Once were obtained various chemical data, the multivariate analysis
of the data was performed, which provided relevant information, contributing to the
optimization of some conditions, such as selection of fiber, extraction time and
extraction temperature yielded the characterization of the most number of VOCs. In this
context, the conditions that presented the most promising results were: fibers
CAR/PDMS and PA, extraction time equal the 60 min and extraction temperature of 29
°C. The essential oil of the flowers of X. aromatica was obtained by hydrodistillation
and chemically characterized by GC-MS. The major compound present was the
pentadecan-2-one (16.38%). The extraction techniques utilized were helpful, however
there was qualitative and quantitative variation of VOCs, which is expected due to the
extraction process be different. Thus, it is observed that depending on the objective of
the survey or that searches for in the volatile fraction, it is necessary to use the
technique to give the most promising results for the investigation held or in order to
complement each other. In this way, the study of A. coriacea and X. aromatica
contributed to the knowledge of the chemical profile of VOCs present in these species,
seen from these investigations that the same can be applied in several industrial areas,
for example cosmetic, food, among others.
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Palavras-chave
COVs, Annona coriacea, Xylopia aromatica, Flores, Extrações in vivo e in vitro, HS-SPME, Hidrodestilação, Chemometrics, Flowers, Extraction in vivo and in vitro, Hydrodistillation
Citação
JUNQUEIRA, J. G. M. Estudo químico de Annona coriacea Mart. E Xylopia aromatica (Lam.) Mart. (Annonaceae). 2015. 144 f. Dissertação (Mestrado em Química) - Universidade Federal de Goiás, Catalão, 2015.