TY - JOUR
T1 - Determination of sulfite in beer based on fluorescent derivatives and liquid chromatographic separation
AU - Abrahamsson, Victor
AU - Hoff, Signe
AU - Nielsen, Nikoline Juul
AU - Lametsch, Marianne Lund
AU - Andersen, Mogens Larsen
PY - 2012
Y1 - 2012
N2 - A method was developed for quantification of sulfite in beer based on derivatization with the maleimide-derived probe ThioGlo 1 followed by separation of fluorescent adducts by reversed-phase high-performance liquid chromatography and fluorescence detection. Sulfite gave two ThioGlo 1 derivatives and it was shown by mass spectrometry that both had identical mass spectra. Matrix effects were observed when constructing sulfite standard curves in different beers and, therefore, use of a matrixmatched calibration curve is proposed. ThioGlo 1 was found to generate fluorescent adducts with both bound and free sulfite, providing a quantification of the total sulfite content in beer. The limit of quantification of sulfite was 0.6 mg/L and the method can be used for quantification of sulfite in highly colored beers.
AB - A method was developed for quantification of sulfite in beer based on derivatization with the maleimide-derived probe ThioGlo 1 followed by separation of fluorescent adducts by reversed-phase high-performance liquid chromatography and fluorescence detection. Sulfite gave two ThioGlo 1 derivatives and it was shown by mass spectrometry that both had identical mass spectra. Matrix effects were observed when constructing sulfite standard curves in different beers and, therefore, use of a matrixmatched calibration curve is proposed. ThioGlo 1 was found to generate fluorescent adducts with both bound and free sulfite, providing a quantification of the total sulfite content in beer. The limit of quantification of sulfite was 0.6 mg/L and the method can be used for quantification of sulfite in highly colored beers.
U2 - 10.1094/asbcj-2012-1012-01
DO - 10.1094/asbcj-2012-1012-01
M3 - Journal article
SN - 0361-0470
VL - 70
SP - 296
EP - 302
JO - Journal of the American Society of Brewing Chemists
JF - Journal of the American Society of Brewing Chemists
IS - 4
ER -