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Off-line TMAH-GC/MS and NMR characterization of humic substances extracted from river sediments of northwestern Sao Paulo under different soil uses
(Elsevier B.V., 2015-02-15)
Humic substances (HS) vary according to the physical and chemical factors present in the environment. Thus, the characterization of HS is very important because it improves the understanding of the groups that comprise the ...
Volatile and odoriferous compounds changes during frozen concentrated orange juice processing
(2015-11-01)
Sixty-two volatile compounds were identified in orange juice from frozen concentrated orange juice (FCOJ) processing steps using HSSPME-GC-MS in combination with GC-OSME. Twenty-four compounds were perceived by OSME in the ...
Caracterización de los compuestos del aroma en rones colombianos por HS-SPME-GC-MS-O
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Química, 2016-05-01)
Se identificaron por primera vez 46 compuestos volátiles olfativamente activos con actividad aromática significativa presentes en rones comerciales de Colombia. Lo anterior, mediante microextracción en fase sólida en modo ...
Volatile profile characterization of extra virgin olive oils from Argentina by HS-SPME/GC-MS and multivariate pattern recognition tools
(Springer, 2014-04-17)
The distinctive aroma of virgin olive oil is attributed to a large number of chemical compounds of different classes such as aldehydes, alcohols, esters, hydrocarbons, ketones, furans, and other volatile compounds that are ...
GC–MS study of compounds isolated from Coffea arabica flowers by different extraction techniques
(2013-07)
Headspace (HS), extractive, and distillative methods were employed to isolate volatile and semivolatile compounds from fresh Coffea arabica flowers. Static HS solid-phase microextraction (HS-SPME), microwave-assisted HS-SPME ...
Characterization of volatile composition of Laurencia dendroidea by gas chromatography-mass spectrometry
(Sociedade Brasileira de Farmacognosia, 2012)
In this study we report the characterization of the volatile compounds of Laurencia dendroidea. Solvent extracts (dichloromethane and methanol), hydrodistillation extracts and headspace solid-phase microextraction samples ...
Determination of polybrominated diphenyl ethers in water samples from Mendoza River Basin by HS-SPME-GC-MS/MSDeterminación de éteres difenil-polibromados en aguas superficiales de la cuenca del Río Mendoza mediante HS-SPME-GC-MS/MS
(Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias, 2010)
Metabol??mica aplicada ?? identifica????o de biomarcadores nas esp??cies frut??feras Eugenia uniflora L. e Passiflora spp.
(Instituto de Qu??micaPrograma de P??s-Gradua????o em Qu??micaUFBAbrasil, 2016-10-18)