Determination of residual (free) monomer in water based polymer emulsions by head space gas chromatography mass spectrometry

2017 ◽  
Vol 63 ◽  
pp. 462-466 ◽  
Author(s):  
Narendra H. Petha ◽  
Rama S. Lokhande ◽  
Raju M. Patil ◽  
Devender T. Seshadri
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Head Space ◽  
Chromatography Mass Spectrometry ◽  
Water Based ◽  
Head Space Gas Chromatography ◽  
Free Monomer

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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