Home | About | Quick Start | FAQ
Beta Version 0.1
DHARA is an online index of articles on Ayurveda published in research journals worldwide. Users Online: 849
  Enter Keyword Below :
      
Advanced

Journal of Pharmaceutical and Biomedical Analysis 1997 Jun ; (9-10) :0
Determination of p-hydroxymandelic acid enantiomers in urine by high-performance liquid chromatography with electrochemical detection.

Abstract
High-performance liquid chromatography (HPLC) with electrochemical detection using a chiral ligand-exchange column was developed for the enantioselective determination of p-hydroxymandelic acid (HMA), a metabolite of synephrine, with high sensitivity. A good linear relationship between current ratio and amount was noted for 0.5-500 pmol HMA, with a correlation coefficient of 0.999 for each HMA enantiomer. The relative standard deviation (R.S.D.) was 1.6% at 100 pmol d-HMA and 2.2% at 100 pmol l-HMA. The detection limit of each HMA enantiomer was 0.5 pmol (signal to noise ratio, S/N = 3). By this method, HMA in Citrus unshiu and in urine following the ingestion of C. unshiu was determined. Although no HMA was found in c. unshiu, d- and l-HMA were present in urine after the ingestion of C. unshiu. The time courses of HMA and conjugated synephrine enantiomers excreted in urine following the ingestion of C. unshiu for 24 h could be monitored. This method should prove applicable to the study of synephrine metabolism.

DHARA ID: D042295 Pubmed ID: 9226583


Access to Full Paper Not Available

Replica Louis vuitton Belts Replica Louis vuitton Handbags Replica Louis vuitton Backpack Replica Louis vuitton Capucines Bags Imitazioni Louis vuitton Borse Imitazioni Louis vuitton Cinture Imitazioni Louis vuitton Occhiali Replica Louis vuitton Geldb?rsen Replica Louis vuitton Gürtel Replica Louis vuitton Schmuck Replica Louis vuitton Schal Imitation Louis vuitton Bijoux Imitation Louis vuitton Ceinture Imitation Louis vuitton Chaussures Imitation Louis vuitton Foulard namaak Louis vuitton Gordels namaak Louis vuitton Handtassen namaak Louis vuitton Portemonnees namaak Louis vuitton Schoenen Replica Louis vuitton Bolsos Replica Louis vuitton Billeteras Replica Louis vuitton Cinturones Dior Replica Hermès Replica Yves Saint Laurent Replica Goyard Replica Imitation Louis Vuitton Imitation Hermès Imitation Dior Imitation Yves Saint Laurent Imitazioni Bottega Veneta Borse Imitazioni Delvaux Borse Imitazioni Goyard Borse Replica Taschen Replica Louis Vuitton Replica Hermès Replica Dior Replica Bottega Veneta tassen Replica Chloé tassen Replica Delvaux tassen Replica Goyard tassen imitacion Louis Vuitton imitacion Louis Vuitton imitacion Hermès imitacion Dior Replica Miu Miu Replica Prada Replica Yves Saint Laurent Replica Chanel Replica Gucci Replica Hermès Replica Miu Miu Réplique Chanel Réplique Hermès Réplique Miu Miu Imitazioni Chanel Imitazioni Hermès Imitazioni Miu Miu imitacion Bolso Yves Saint Laurent imitacion Hermes imitacion Chanel imitacion Gucci Gucci Replica Hermes Replica

Copyright | Disclaimer | Feedback | Updates | Contact
Developed and maintained by AVP Research Foundation (Formerly AVT Institute for Advanced Research), 136/137, Trichy Road, Ramanathapuram, Coimbatore - 641045, Tamil Nadu, India
Funded by Central Council for Research in Ayurvedic Sciences, Dept. of AYUSH, Ministry of Health and Family Welfare, Government of India, New Delhi