منابع مشابه
Qualitative and Quantitative Colorimetric
All heptoses produce with orcinol in dilute HCl two characteristic colored compounds which differ greatly in their absorption spectra. Three different modifications of this reaction were found useful. Procedure i--To 2 cc. of a solution containing 20 to 100 y per cc. of ketoheptose or 5 times as much of an aldoheptose is added 0.4 cc. of concentrated HCl, sp. gr. 1.19, in a test-tube with a gro...
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The methods currently used for the estimation of tryptophan are based on one of the following principles: Reaction with aldehydes in acid solution (1, Z), with glyoxylic acid (3), with mercury salts and nitrous acid (4,5), by determination after isolation from its mercury salt (6)) or by the use of Marshal’s reagent (7). Of the above mentioned methods, those based on aldehyde reactions and on t...
متن کاملQuantitative Colorimetric Assay of Acid Mucopolysaccharides
In 1946 Hale (1) described a histochemical method for the detection of acid polysaccharides in animal tissues, based on the ability of these compounds to bind ferric ions, which were subsequently detected as Prussian blue. It has been possible to adapt this histochemical method to the quantitative determination of acid mucopolysaccharides on a macro or micro scale. The major modification of the...
متن کاملQuantitative colorimetric assay of acid mucopolysaccharides.
In 1946 Hale (1) described a histochemical method for the detection of acid polysaccharides in animal tissues, based on the ability of these compounds to bind ferric ions, which were subsequently detected as Prussian blue. It has been possible to adapt this histochemical method to the quantitative determination of acid mucopolysaccharides on a macro or micro scale. The major modification of the...
متن کاملQualitative and quantitative colorimetric determination of heptoses.
All heptoses produce with orcinol in dilute HCl two characteristic colored compounds which differ greatly in their absorption spectra. Three different modifications of this reaction were found useful. Procedure i--To 2 cc. of a solution containing 20 to 100 y per cc. of ketoheptose or 5 times as much of an aldoheptose is added 0.4 cc. of concentrated HCl, sp. gr. 1.19, in a test-tube with a gro...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1914
ISSN: 0036-8733
DOI: 10.1038/scientificamerican04111914-238supp