TY  - CHAP
A1  - Schnabel, Eberhard
A1  - Berndt, Heinz
ED  - Nesvadba, H.
T1  - Zur selektive Abspaltbarkeit der t-Butyloxycarbonylgruppe
T2  - Peptides 1971 : proceedings of the Eleventh European Peptide Symposium, Vienna, Austria, April 1971
Y1  - 1973
SN  - 0-7204-4120-X
SP  - 69
EP  - 70
PB  - North-Holland Publ. [u.a.]
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
T1  - Zur Reaktion von Iminodithiocarbonaten mit Carbonsäuren. I : Synthese des Modellpeptid-Derivates Z-(L)-Ala-(L/D)-Phe-(L)-Val-OMe
JF  - Tetrahedron letters
Y1  - 1980
U6  - http://dx.doi.org/10.1016/S0040-4039(00)78663-1
SN  - 0040-4039
VL  - 21
IS  - 34
SP  - 3265
EP  - 3268
ER  - 
TY  - JOUR
A1  - Scherer, Ulrich W.
T1  - Zur Radiopharmazie kardialer und kardiovaskulärer Radiopharmazeutika
JF  - Kardiologische Nuklearmedizin / G. Hör [Hrsg.]
Y1  - 1997
SN  - 3-609-62970-3
SP  - 27
EP  - 42
PB  - ecomed
CY  - Landsberg
ER  - 
TY  - JOUR
A1  - Mootz, D.
A1  - Merschenz-Quack, Angelika
T1  - Zur Kenntnis der höchsten Hydrate der Schwefelsäure: Bildung und Struktur von H2SO4·6,5 H2O und H2SO4·8H2O
JF  - Zeitschrift für Naturforschung B: Journal of chemical sciences
Y1  - 1987
SN  - 1865-7117 (E-Journal); 0932-0776 (Print)
VL  - 42
IS  - H. 10
SP  - 1231
EP  - 1236
ER  - 
TY  - BOOK
A1  - Feuerriegel, Uwe
T1  - Zur Desaktivierung eines Desaktivierung eines Palladium-Trägerkatalysators durch Schwefel¬wasserstoff bei der katalytischen Methanoxidation
Y1  - 1993
N1  - Dissertation
PB  - Univ.-Gesamthochsch.
CY  - Kassel
ER  - 
TY  - JOUR
A1  - Scheer, Nico
A1  - Wolf, C. Roland
T1  - Xenobiotic receptor humanized mice and their utility
JF  - Drug Metabolism Reviews
Y1  - 2013
U6  - http://dx.doi.org/10.3109/03602532.2012.738687
SN  - 1097-9883
IS  - 1
SP  - 110
EP  - 121
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Mang, Thomas
T1  - Wässrige Kunststoffdispersionen für Medizin und Biotechnologie
JF  - Chemie und Technologie makromolekularer Stoffe. 15. Kolloquium: 25. November 1994 an der FH Aachen, Fachbereich Chemieingenieurwesen
Y1  - 1994
N1  - FH-Texte 66. Fachhochschule <Aachen>
SP  - 155
EP  - 183
ER  - 
TY  - JOUR
A1  - Biselli, Manfred
A1  - Noll, T.
A1  - Wandrey, C.
T1  - Wirbelschichtreaktor und Biomasse-Monitor : ein leistungsfähiges Fermenationssystem für Säugerzellen / Noll, T. ; Biselli, M. ; Wandrey, C.
JF  - Biospektrum. 2 (1996), H. 1
Y1  - 1996
SN  - 0947-0867
SP  - 65
EP  - 67
ER  - 
TY  - JOUR
A1  - Mang, Thomas
T1  - Wiederverwertung von Kunststoff-Verbundmaterial
JF  - Chemie und Technologie makromolekularer Stoffe. 16. Kolloquium: 20. November 1998 an der FH Aachen, Fachbereich Chemieingenieurwesen
Y1  - 1998
N1  - FH-Texte 69. Fachhochschule <Aachen>
SP  - 191
EP  - 213
PB  - Fachhochschule Aachen
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Block, Franziska
A1  - May, Alexander
A1  - Wetzel, Katharina
A1  - Adels, Klaudia
A1  - Elbers, Gereon
A1  - Schulze, Margit
A1  - Monakhova, Yulia
T1  - What is the best spectroscopic method for simultaneous analysis of organic acids and (poly)saccharides in biological matrices: Example of Aloe vera extracts?
JF  - Talanta Open
N2  - Several species of (poly)saccharides and organic acids can be found often simultaneously in various biological matrices, e.g., fruits, plant materials, and biological fluids. The analysis of such matrices sometimes represents a challenging task. Using Aloe vera (A. vera) plant materials as an example, the performance of several spectro-scopic methods (80 MHz benchtop NMR, NIR, ATR-FTIR and UV–vis) for the simultaneous analysis of quality parameters of this plant material was compared. The determined parameters include (poly)saccharides such as aloverose, fructose and glucose as well as organic acids (malic, lactic, citric, isocitric, acetic, fumaric, benzoic and sorbic acids). 500 MHz NMR and high-performance liquid chromatography (HPLC) were used as the reference methods.

UV–vis data can be used only for identification of added preservatives (benzoic and sorbic acids) and drying agent (maltodextrin) and semiquantitative analysis of malic acid. NIR and MIR spectroscopies combined with multivariate regression can deliver more informative overview of A. vera extracts being able to additionally quantify glucose, aloverose, citric, isocitric, malic, lactic acids and fructose. Low-field NMR measurements can be used for the quantification of aloverose, glucose, malic, lactic, acetic, and benzoic acids. The benchtop NMR method was successfully validated in terms of robustness, stability, precision, reproducibility and limit of detection (LOD) and quantification (LOQ), respectively. All spectroscopic techniques are useful for the screening of (poly)saccharides and organic acids in plant extracts and should be applied according to its availability as well as information and confidence required for the specific analytical goal. Benchtop NMR spectroscopy seems to be the most feasible solution for quality control of A. vera products.
KW  - Spectroscopy
KW  - (Poly)saccharides
KW  - Organic acids
KW  - Aloe vera
KW  - qNMR
Y1  - 2023
U6  - http://dx.doi.org/10.1016/j.talo.2023.100220
SN  - 2666-8319
VL  - 7
IS  - Art. No. 100220
SP  - 1
EP  - 9
PB  - Elsevier
CY  - Amsterdam
ER  -