TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Bleichert, Michaela
A1  - Eckhardt, Hanns Simon
A1  - Klein, Karl-Friedrich
A1  - Spangenberg, Bernd
T1  - A simple and reliable method for quantification of glucosamine in nutritional supplements
JF  - JPC - Journal of Planar Chromatography - Modern TLC
N2  - HPTLC on amino plates, with simple heating of the plates for derivatization, has been used for quantification of glucosamine in nutritional supplements. On heating the plate glucosamine reacts to form a compound which strongly absorbs light between 305 and 330 nm, with weak fluorescence. The reaction product can be detected sensitively either by absorption of light or by fluorescence detection. The detection limit in absorption mode is approximately 25 ng per spot. In fluorescence mode a detection limit of 15 ng is achievable. A calibration plot for absorption detection is linear in the range 25 to 4000 ng glucosamine. The derivative formed from glucosamine by heating is stable for months, and the relative standard deviation is 1.64% for 600 ng glucosamine. The amounts of glucosamine found in nutritional supplements were in agreement with the label declarations.
KW  - Glucosamin
KW  - Nahrung
KW  - Ergänzung
Y1  - 2008
UR  - https://www.researchgate.net/publication/245405290
SN  - 0933-4173
SS  - 0933-4173
U6  - https://doi.org/10.1556/JPC.2007.6005
DO  - https://doi.org/10.1556/JPC.2007.6005
VL  - 21
IS  - 1
SP  - 55
EP  - 59
PB  - Akadémiai Kiadó
ER  -