title: Detection of polydimethylsiloxanes transferred from silicone-coated parchment paper to baked goods using direct analysis in real time mass spectrometry.
abstract: The non-stick properties of parchment papers are achieved by polydimethylsiloxane (PDMS) coatings. During baking, PDMS can thus be extracted from the silicone-coated parchment into the baked goods. Positive-ion direct analysis in real time (DART) mass spectrometry (MS) is highly efficient for the analysis of PDMS. A DART-SVP source was coupled to a quadrupole-time-of-flight mass spectrometer to detect PDMS on the contact surface of baked goods after use of silicone-coated parchment papers. DART spectra from the bottom surface of baked cookies and pizzas exhibited signals because of PDMS ions of the general formula [(C2H6SiO)n  + NH4 ](+) in the m/z 800-1900 range.
authors.affiliation: Bruker Daltonik GmbH, Fahrenheitstraße 4, 28359, Bremen, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Jakob
authors.affiliation: Institute of Bioanalytical Chemistry, Saarland University, Campus B2 2, 66123, Saarbrücken, Germany.
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Crawford
authors.affiliation: Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
authors.forename: Jürgen H
authors.initials: JH
authors.lastname: Gross
mesh_terms: D003296:Cooking / Q000379:methods; D004129:Dimethylpolysiloxanes / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis*; D018857:Food Packaging / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods*; D010209:Paper; D012828:Silicones / Q000737:chemistry*
chemical_list: D004129:Dimethylpolysiloxanes; D012828:Silicones; C013830:baysilon
keywords: DART; PDMS; accurate mass; baking; cookies; direct analysis in real time; extraction; mass spectrometry; parchment paper; pizzas; polydimethylsiloxanes; quadrupole-time-of-flight mass spectrometer