Prediction of mold contamination from microbial volatile organic compound profiles using head space gas chromatography/mass spectrometry

2012 ◽  
Vol 103 ◽  
pp. 119-124 ◽  
Author(s):  
Barry K. Lavine ◽  
Nikhil Mirjankar ◽  
Ryan LeBouf ◽  
Alan Rossner
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Compound ◽  
Volatile Organic Compound ◽  
Gas Chromatography Mass Spectrometry ◽  
Head Space ◽  
Chromatography Mass Spectrometry ◽  
Volatile Organic ◽  
Head Space Gas Chromatography

scholarly journals Derivatized volatile organic compound characterization of Friulano wine from Collio (Italy–Slovenia) by HS-SPME-GC-MS and discrimination from other varieties by chemometrics

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sabina Licen ◽  
Elija Muzic ◽  
Sara Briguglio ◽  
Arianna Tolloi ◽  
Pierluigi Barbieri ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Carbonyl Compound ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Solid Phase Micro Extraction ◽  
Content Type ◽  
Head Space ◽  
Chromatography Mass Spectrometry ◽  
Volatile Organic

PurposeMethods to assess the authenticity and traceability of wines have been extensively studied as enhancers of food quality, allowing producers to obtain market recognition and premium prices. Among analytical techniques, the volatilome profile attained by gas chromatography coupled with mass spectrometry is acquiring more and more attention by the scientific community, together with the use of chemometricsDesign/methodology/approachThe volatilome profile of three varieties of blanc wines from the Collio area (namely Ribolla Gialla, Malvasia and Friulano) between Italy and Slovenia, was determined by head space-solid phase micro extraction-gas chromatography-mass spectrometry, enhancing the carbonyl compounds identification with O-(2, 3, 4, 5, 6-pentafluorobenzyl)-hydroxylamine with the aim of identifying the autochthonous Friulano variety.FindingsA two-step chemometric approach based on an unsupervised technique (PCA) followed by a supervised one (PLS-DA) allowed to identify possible markers for discriminating the Friulano Collio variety from the others, in particular two chemical classes were identified by PCA (ketones and long chain esters). PLS-DA showed 87% accuracy in classification. A correct classification (i.e. non-Friulano Collio) of a group of wines obtained from the same grape variety but produced in an extra-Collio area was obtained as well. The results confirmed the benefits of using a derivatization step prior to volatile organic compounds analysis.Research limitations/implicationsAmong methods to assess the authenticity and traceability of wines, volatilome profile of wines determined by head space-solid phase micro extraction-gas chromatography-mass spectrometry, enhanced by the carbonyl compound identifications with O-(2, 3, 4, 5, 6-pentafluorobenzyl)-hydroxylamine, may have a key role in conjunction with chemometrics and, in particular with principal component analysis and partial least square discriminant analysis.Practical implicationsAmong methods to assess the authenticity and traceability of Friulano wine, volatilome profile of wines determined by head space-solid phase micro extraction-gas chromatography-mass spectrometry, enhanced by the carbonyl compound identifications with O-(2, 3, 4, 5, 6-Pentafluorobenzyl)Hydroxylamine hydrochloride, may have a key role in conjunction with chemometrics.Originality/valueFew works investigated both wine traceability with a volatilome enhancer and chemometrics of the Friulano wine variety obtaining such an improvement in this wine variety discrimination.

Petroleum-Like Off-Flavour in Seasoned Herring Roe

1988 ◽  
Vol 20 (8-9) ◽  
pp. 49-53 ◽  
Author(s):  
T. Sato ◽  
N. Matsuoka ◽  
H. Sugihara ◽  
H. Akazawa ◽  
T. Motohiro
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Packaging Film ◽  
Yeast Isolate ◽  
Plastic Packaging ◽  
Head Space ◽  
Chromatography Mass Spectrometry ◽  
Head Space Gas Chromatography ◽  
Herring Roe

A petroleum-like off-flavour found in seasoned herring roe was implicated as styrene by head-space gas chromatography and gas chromatography-mass spectrometry. The styrene was not detected in the plastic packaging film or in samples of fresh and normal seasoned roe. However, one strain of yeast was isolated from an off-flavoured sample of seasoned herring roe. The styrene was subsequently produced in a test seasoning solution into which the yeast isolate had been inoculated and incubated at 25°C. The yeast isolate was identified as TorulopsisCandida (Saito) Lodder 1922.

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