842 Journal of Chemical Education • Vol. 84 No. 5 May 2007 • www.JCE.DivCHED.org Thin-layer chromatography (TLC) is often used as a qualitative method. It can determine the number of components in a mixture, verify the identity of substances, monitor the progress of a reaction, or ascertain the effectiveness of a purification. Since TLC is so easy and practical, many chemists frequently use TLC...

Mentha piperita and Citrus sinensis was an aromatic plants well known for its fragrance and distinct aroma. In this prospective study to evaluate the chromatogram detection of ethanol extract of Mentha piperita and Citrus sinensis with standard flavonoid marker eriocitrin by HPTLC technique. HPTLC chromatogram was developed in ethanolic extract of Mentha piperita, Citrus sinensis and standard f...

A reverse phase HPLC method with UV detection has been developed and validated in order to quantify plumbagin, the bioactive marker of the roots of P. indica and P. zeylanica. A quantitative HPTLC method was also developed using hexane: ethyl acetate (8:2) as the mobile phase. The plumbagin content in the roots were determined using both the methods. P. indica was found to contain significantly...

background: comparing continuous films taken at different timescales is a way to study the alveolar bone changes around the implant over time. one of the important concerns in quantitative analysis of the alveolar bone changes over the time is to reduce variations in the x-ray imaging geometry and image density. methods: using a modified xcp film holder together with the bite recording material...

OBJECTIVES To evaluate corneal densitometry and anterior segment parameters of rheumatoid arthritis (RA) patients and compare these results with those of age-matched healthy control subjects. MATERIALS AND METHODS Anterior segment parameters and corneal densitometry of patients with RA and healthy control subjects were assessed by Scheimpflug corneal topography. For densitometry analysis, the...

The leaves of Acacia nilotica (L.) Delile was extracted with methanol and aqueous medium and studied for in vitro antimicrobial property. The methanol extract was found to be most active against all the bacterial species tested except S.aureus. Active methanol extract was further studied for HPTLC fingerprint and by phytochemical analysis. HPTLC analysis confirmed segregation of four individual...

BACKGROUND Comparing continuous films taken at different timescales is a way to study the alveolar bone changes around the implant over time. One of the important concerns in quantitative analysis of the alveolar bone changes over the time is to reduce variations in the X-ray imaging geometry and image density. METHODS Using a modified XCP film holder together with the bite recording material...

The present study reports formulation of a traditionally used poly herbal product for wound healing and its chromatographic analysis by HPTLC. Herbal therapy was the common treatment prescribed by Iranian physicians for wound healing. “Zemad”, the most ancient pharmaceutical dosage form used in the Iranian Traditional Medicine (ITM) for skin diseases. In this study, a poly herbal paste (PHP) wi...

The present study reports formulation of a traditionally used poly herbal product for wound healing and its chromatographic analysis by HPTLC. Herbal therapy was the common treatment prescribed by Iranian physicians for wound healing. “Zemad”, the most ancient pharmaceutical dosage form used in the Iranian Traditional Medicine (ITM) for skin diseases. In this study, a poly herbal paste (PHP) wi...