The Identification of Aroma Compounds in Key Lime Oil Using Solid-Phase Microextraction and Gas Chromatography-Olfactometry

2001 ◽  
pp. 100-112 ◽  
Author(s):  
M. G. Chisholm ◽  
M. A. Wilson ◽  
G. M. Gaskey ◽  
J. A. Jell ◽  
D. M. Cass
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Aroma Compounds ◽  
Gas Chromatography Olfactometry ◽  
Key Lime

scholarly journals Analysis of Lambic Beer Volatiles during Aging Using Gas Chromatography–Mass Spectrometry (GCMS) and Gas Chromatography–Olfactometry (GCO)

Beverages ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 31
Author(s):  
Katherine Witrick ◽  
Eric R. Pitts ◽  
Sean F. O’Keefe
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Mass Spectra ◽  
Solid Phase ◽  
Aroma Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Spontaneous Fermentation ◽  
Chromatography Mass Spectrometry ◽  
Gas Chromatography Olfactometry

Lambic beer is produced using spontaneous fermentation. Gueuze is a style of lambic beer that blends “young” (1 year old) and “aged” (2+ years old) beers. Little is known about the development of volatile aroma compounds in lambic beer during aging. Solid-phase microextraction and gas chromatography–mass spectrometry were used to analyze volatile compounds from 3, 6, 9, 12, and 28-month-old commercial samples of lambic beer. Compounds were identified using standardized retention time and mass spectra of standards. Gas chromatography–olfactometry was used to characterize the aroma profiles of the samples. A total of 41 compounds were identified using gas chromatography–mass spectrometry (GC–MS). Ethyl lactate, ethyl acetate, 4-ethylphenol and 4-ethylguaiacol were identified in the 9, 12, and 28-month old samples. These four compounds have been linked to the microorganism Brettanomyces. Twenty-one aroma active compounds were identified using Gas chromatography–olfactometry (GC–O). As the age of the gueuze samples increased, a larger number of aroma compounds were identified by the panelists; the compounds identified increased from seven for the 3-month-old samples to nine for the 6-month-old samples, and eleven for both the nine and twelve-month-old samples, and seventeen for the twenty-eight-month-old samples.

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