It is the purpose of the research reported in the present series of papers to establish accurate spectrophotometric procedures for the determination of iron, more particularly for use in biochemical and nutrition studies, but applicable generally to the analysis of biological materials, foods, pharmaceuticals, and chemical reagents. Several calorimetric methods for the determination of iron are...

Abstract: Introduction: Apigenin (4,5,7 Trihydroxyflavone) is a natural compound of flavonoids class, which found in various plant constituents. Since primitive years, has been used as traditional medicine, because it possesses biological functions. Common ayurvedic formulations comprising apigenin are market. Hence quality control preparation covering desirable. Objectives: In present study, p...

Background : We tested the in vitro activity of pleconaril and AG7088 against five numbered human rhinovirus (HRV) serotypes and 46 clinical HRV isolates of undefined serotype recovered from patients with common colds. Antiviral effect of pleconaril and AG7088 were assessed by cytophathic effect (CPE) inhibition assays in Ohio HeLaI cells using microscopic and spectrophotometric methods. Both c...

INTRODUCTION Because of its chemical diversity, the only way to standardise propolis is to specify multiple standards for different propolis types according to the corresponding chemical profile. So far, this has been done only for European propolis. OBJECTIVE To develop a rapid low-cost spectrophotometric procedure for quantification of bioactive prenylated flavanones in Taiwanese propolis. ...

The ratio of absorbance at 260 and 280 nm (the A260/280 ratio) is frequently used to assess the purity of RNA and DNA preparations. Data presented in this report demonstrate significant variability in the RNA A260/280 ratio when different sources of water were used to perform the spectrophotometric determinations. Adjusting the pH of water used for spectrophotometric analysis from approximately...

To develop a new more accurate spectrophotometric method for detecting monoamine oxidase inhibitors from plant extracts, a series of amine substrates were selected and their ability to be oxidized by monoamine oxidase was evaluated by the HPLC method and a new substrate was used to develop a peroxidase-linked spectrophotometric assay. 4-(Trifluoromethyl) benzylamine (11) was proved to be an exc...

Present study deals with two Spectrophotometric methods, Conventional Spectrophotometric Estimation and Area under Curve Method and a chromatographic method for estimation of Cefixime by using five different hydrotropic agents. These include Ammonium acetate (6M), Potassium acetate (5M), Potassium citrate (0.5 M), Sodium citrate (1.25 M) and Urea (8M). Area under curve method was based on measu...

An optical chemical sensor has been developed for the quantitative spectrophotometric analysis of copper.

introduction: medication errors are among the most serious health errors threatening patient safety in all countries, with major impacts on public health. midwives as members of healthcare systems are prone to such errors. therefore, in this study, we aimed to determine medication errors and the contributing factors among midwives working in maternity units of mashhad university of medical scie...