K
Karl Speer
Researcher at Dresden University of Technology
Publications - 89
Citations - 1925
Karl Speer is an academic researcher from Dresden University of Technology. The author has contributed to research in topics: Smoke & Matrix (chemical analysis). The author has an hindex of 23, co-authored 87 publications receiving 1568 citations.
Papers
More filters
Journal ArticleDOI
The lipid fraction of the coffee bean
TL;DR: The influences of typical processes like roasting and steaming on selected lipid components as well as the effects of the storage of green coffee beans under different conditions will be described.
Journal ArticleDOI
Classification and characterization of manuka honeys based on phenolic compounds and methylglyoxal.
Stefanie Oelschlaegel,Margit Gruner,Pang-Ning Wang,Anja Boettcher,Isabelle Koelling-Speer,Karl Speer +5 more
TL;DR: A comprehensive comparison of manuka honeys to other unifloral honeys revealed that especially kojic acid, 5-methyl-3-furancarboxylic acid, leptosin, unedone, 2-methoxybenzoic Acid, 4-Methoxyphenyllactic acid, 3-hydroxy-1-(2-mETHoxypenyl)penta-1,4-dione, and methyl syringate
Journal ArticleDOI
Assessment of sample cleanup and matrix effects in the pesticide residue analysis of foods using postcolumn infusion in liquid chromatography-tandem mass spectrometry.
TL;DR: In the present study, matrix effect profiles generated by postcolumn infusion of a standard pesticide mix with extracts of different food matrices prepared by the QuEChERS method allowed for a detailed comparison of the interferences caused by the matrix effects from various food samples.
Journal ArticleDOI
Polycyclic aromatic hydrocarbons (PAH) and phenolic substances in meat products smoked with different types of wood and smoking spices
TL;DR: The use of the rapidly growing poplar seems to be a reasonable approach for reducing the PAH contents in smoked meat products, and the sum contents of the five phenolic substances in sausages smoked with poplar were higher, or only slightly lower, when compared to the use of beech.
Journal ArticleDOI
Gas chromatography-mass spectrometry (GC-MS) method for the determination of 16 European priority polycyclic aromatic hydrocarbons in smoked meat products and edible oils.
TL;DR: The reliability of the analytical method for edible oils was demonstrated by the results from a proficiency test and Measurements with GC-high-resolution mass spectroscopy (HRMS) and gas chromatography-mass selective detection (GC-MSD) led to comparable results.