Observations on the use of the phosphotungstic acid method of determining ascorbic acid in urines with low ascorbic acid content
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چکیده
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the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests
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15 صفحه اولEnrichment of fish eggs with ascorbic acid
Success in aquaculture depends on the mass production and quality of juveniles. However, many fish species suffered high losses during the early stages of development. Therefore, in order to decrease mortality, produce a large number of healthy larvae is a fundamental issue. On the other hand, one of the micronutrients that can be effective in larvae health is ascorbic acid. During the embryoni...
متن کاملThe Photometric Determination of Cystine , Cysteine , Ascorbic Acid , and Related Com - Pounds with Phosphotungstic Acid
Some time ago a brief report (1) was made on the use of the Pulfrich photometer for the determination of sulfhydryl and disulfide compounds by a modified Folin (2) method. Since then the method has been extensively used in this laboratory (3-9). Folin’s method is based upon the observation that cystine plus sulfite gives a blue color with phospho-18-tungstic acid; whereas cystine alone develops...
متن کاملDetermination of L- Ascorbic Acid in Plasma by Voltammetric Method
Voltammetric techniques have been considered as important methods among the analytical techniques used for the identification and determination of trace concentrations of many biological molecules such as L-ascorbic acid (AA). L-ascorbic acid is an electro-active molecule, though it is difficult to determine its value directly with a majority of electrodes made of carbon and transition metals, ...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1936
ISSN: 0306-3283
DOI: 10.1042/bj0301753