SEPARATION OF PORPHYRINS BY COUNTER-CURRENT DISTRIBUTION
نویسندگان
چکیده
منابع مشابه
Separation of porphyrins by counter-current distribution.
The recent development by Craig (l-3) of an all-glass machine for liquidliquid counter-current fractionation makes possible the application of his method to the separation of porphyrins which cannot readily be separated by the sensitive Willstatter “HCl number” method. In this paper we have studied the application of the Craig method to the separation of a mixture of three known porphyrins, usi...
متن کاملDephosphorylation of nucleotides; their analysis by counter-current distribution.
The analysis for the pyrimidine c0nstituent.s of ribonucleic acids has long been a difficult problem, because of the stability of the ribosidic and phosphoryl bonds of the pyrimidine nucleotides. The nucleotides are very soluble in water and are difficult to separate. There have been several attempts in recent years to overcome the difficulties. Loring, Ordway, and Pierce (1) used ammonia at 14...
متن کاملThe Application of Counter-Current Distribution to the Separation of Phospholipins
Counter-current distribution between two immiscible solvent phases, as first developed by Craig (1944), offers advantages over both direct and partition chromatography for analytical and preparative work in the field of phospholipins (Lovern, 1949). The only recorded use of the method for such purposes appears to be in a series ofpapers from one laboratory and deals with vegetable phosphatides ...
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Sesquiterpenes lactones including costunolide and dehydrocostus lactone, were isolated from Saussurea lappa roots, which had exhibited a wide range of biological activities such as anti-cancer, anti-inflammatory, antiulcer, and immunomodulatory activities. High-speed counter-current chromatography (HSCCC) was applied for the rapid preparative isolation of sesquiterpenes lactones from <...
متن کاملPurification of Sesquiterpenes from Saussurea LappaRoots by High Speed Counter Current Chromatography
Sesquiterpenes lactones including costunolide and dehydrocostus lactone, were isolated from Saussurea lappa roots, which had exhibited a wide range of biological activities such as anti-cancer, anti-inflammatory, antiulcer, and immunomodulatory activities. High-speed counter-current chromatography (HSCCC) was applied for the rapid preparative isolation of sesquiterpenes lactones from <...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1953
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)66191-5