Johannes Langen

Authentication of pineapple (Ananas comosus [L.] Merr.) fruit maturity stages by quantitative analysis of γ- and δ-lactones using headspace solid-phase microextraction and chirospecific gas chromatography-selected ion monitoring mass spectrometry (HS-SPME-GC-SIM-MS).

R. Carle, H. Schmarr, C. B. Steingass, 2015, Food chemistry.

Quantitative analysis of γ- and δ-lactones in wines using gas chromatography with selective tandem mass spectrometric detection.

H. Schmarr, Johannes Langen, Petra Slabizki, 2013, Rapid communications in mass spectrometry : RCM.

Enantiodifferentiation of 1,2-propanediol in various wines as phenylboronate ester with multidimensional gas chromatography-mass spectrometry

U. Fischer, H. Schmarr, Pascal Wegmann-Herr, 2016, Analytical and Bioanalytical Chemistry.

Quantitative determination of α-ionone, β-ionone, and β-damascenone and enantiodifferentiation of α-ionone in wine for authenticity control using multidimensional gas chromatography with tandem mass spectrometric detection

H. Schmarr, Pascal Wegmann-Herr, Johannes Langen, 2016, Analytical and Bioanalytical Chemistry.

Quantitative analysis of 3-alkyl-2-methoxypyrazines in German Sauvignon blanc wines by MDGC–MS or MDGC–MS/MS for viticultural and enological studies

R. Lopez, H. Schmarr, T. Potouridis, 2014, European Food Research and Technology.