scholarly journals Simultaneous Determination of Sibutramine and N-Di-desmethylsibutramine in Dietary Supplements for Weight Control by HPLC--ESI-MS

2008 ◽  
Vol 46 (8) ◽  
pp. 707-711 ◽  
Author(s):  
Z. Huang ◽  
S. Xiao ◽  
D. Luo ◽  
B. Chen ◽  
S. Yao
Keyword(s):  
Dietary Supplements ◽  
Simultaneous Determination ◽  
Weight Control ◽  
Esi Ms

scholarly journals Simultaneous Determination of Sulphur metabolites in Arabidopsis thaliana via LC-ESI-MS/MS and 34S-metabolic Labelling

2011 ◽  
Vol 23 (4) ◽  
pp. 324-331 ◽  
Author(s):  
Chin-Lin Hsieh ◽  
Kai-Wun Yeh ◽  
Luit J. De Kok ◽  
Ryh-Nan Pan ◽  
Yueh-Hsiung Kuo ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Simultaneous Determination ◽  
Esi Ms ◽  
Metabolic Labelling

HPLC/Tandem Mass Spectrometric Studies on Steroidal Saponins: An Example of Quantitative Determination of Shatavarin IV from Dietary Supplements Containing Asparagus racemosus

2014 ◽  
Vol 97 (6) ◽  
pp. 1497-1502 ◽  
Author(s):  
Dada Patil ◽  
Manish Gautam ◽  
Sunil Gairola ◽  
Suresh Jadhav ◽  
Bhushan Patwardhan
Keyword(s):  
Acetic Acid ◽  
Dietary Supplements ◽  
Quantitative Estimation ◽  
Multiple Reaction Monitoring ◽  
Asparagus Racemosus ◽  
Steroidal Saponin ◽  
Esi Ms ◽  
Tandem Mass Spectrometric ◽  
Positive Ion

Abstract Asparagus racemosus (AR) is a popular botanical present in several Ayurvedic medicines and nutritional and dietary supplements with immunomodulatory, galactogogue, and anticancer activity. A steroidal saponin known as shatavarin IV is one of the active constituents of AR. A new, selective, and rapid HPLC/MS/MS method has been developed and validated for quantitative estimation of shatavarin IV in crude, processed, and marketed samples of AR. The analytes were separated on a Luna C18 column using simple isocratic elution with water (0.1% acetic acid)–acetonitrile (0.1% acetic acid; 70 + 30, v/v) at a flow rate of 0.8 mL/min. The analytes were detected by electrospray ionization (ESI)-MS/MS and quantified using multiple reaction monitoring techniques in the positive ion mode. The method showed excellent linearity (r2 > 0.998) over the concentration range of 7.5 to 254 ng/mL with LOD of 2.5 ng/mL. Precision (RSD) and accuracy (recovery) were found in the ranges of 2.00 to 5.15 and 102 to 110%, respectively. The validated HPLC/ESI-MS/MS method was successfully applied to the quantification of shatavarin IV in crude, processed, and marketed (single or multiherb) AR samples. Therefore, this method could be used for QC and standardization of pharmaceutical or nutritional products containing AR.

Simultaneous Determination of Six Antiretroviral Drugs in Human Hair Using an LC-ESI+-MS/MS Method

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Yan Wu ◽  
Liuxi Chu ◽  
Haoran Yang ◽  
Wei Wang ◽  
Quan Zhang ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Human Hair ◽  
Antiretroviral Drugs ◽  
Esi Ms

Rapid and simultaneous determination of antioxidant markers and caffeine in commercial teas and dietary supplements by HPLC-DAD

Talanta ◽  
2012 ◽  
Vol 101 ◽  
pp. 38-44 ◽  
Author(s):  
Ghada M. Hadad ◽  
Randa A. Abdel Salam ◽  
Rabab M. Soliman ◽  
Mostafa K. Mesbah
Keyword(s):  
Dietary Supplements ◽  
Simultaneous Determination ◽  
Antioxidant Markers
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