منابع مشابه
An improved HPLC method for determination of colocynthin in colocynth
Background and objectives: Colocynthin is the major active secondary metabolite of colocynth, Citrullus colocynthis (L.) Schrad, which has been used in traditional and ethno medicine of many countries. It could be considered as an active marker for quality control of colocynth and its herbal products. Analysis and standardization of colocynth and its herbal preparations are a critical...
متن کاملAn Improved Method for the Determination
A routine discrete sample method for the determination of soil 'available' phosphorus, using manual or automated colour complex preparation, is described. After extraction, orthophosphate is determined colorimetrically using a stable 12molybdoantimonylphosphate complex. This improved method gives results comparable to those obtained using the existing Dickman and Bray procedure. When used with ...
متن کاملan improved hplc method for determination of colocynthin in colocynth
background and objectives: colocynthin is the major active secondary metabolite of colocynth, citrullus colocynthis (l.) schrad, which has been used in traditional and ethno medicine of many countries. it could be considered as an active marker for quality control of colocynth and its herbal products. analysis and standardization of colocynth and its herbal preparations are a critical issue fo...
متن کاملThe determination of hydroxyproline.
There has been a great need for a satisfactory method for the determination of hydroxyproline to facilitate the study of the composition of proteins. Lang (1) and Waldschmidt-Leitz and Akabori (2) developed a calorimetric estimation involving oxidation to pyrrole with sodium hypochlorite and color formation with isatin or p-dimethylaminobenzaldehyde. However, oxidation was said to be incomplete...
متن کاملAn improved method for the colorimetric determination of phosphate.
ALL the known colorimetric methods for the determination of phosphate are liable to errors arising from (a) slight changes in acidity and concentration of reagents, and (b) the presence of interfering substances (e.g. fluorides, nitrites etc.). The following method is almost entirely independent of these disturbing factors, and possesses the added advantage of being more sensitive than those pr...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1986
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.106.1_41