phosphotungstic love

phosphotungstic

Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of or pertaining to phosphotungstic acid or its derivatives

from The Century Dictionary and Cyclopedia

  • Noting a complex acid of which there are several forms. That best known has the composition H3PO4.-12WO3. It is used in connection with stains for histological preparations to be examined under the microscope.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

phospho- +‎ tungstic

Examples

  • A.D MA.A.LUM, A. B.: On the chemical nature of substances from alcoholic extracts of various food stuffs which give a color reaction with phosphotungstic and phosphomolybdic acids.

    The Vitamine Manual

  • Funk carried this investigation farther and fractioned the phosphotungstic acid precipitate with silver nitrate, following the usual procedure for separating nitrogenous bases.

    The Vitamine Manual

  • Cooper and Funk found that the alcoholic extract of rice polishings could be precipitated with phosphotungstic acid and that this procedure permitted them to obtain a fraction that was particularly potent and free from proteins, carbohydrates, and phosphorus.

    The Vitamine Manual

  • FUNK, C.: The fractioning of the phosphotungstic precipitate.

    The Vitamine Manual

  • Its basic nature seems to be well established by its behavior with phosphotungstic acid and its ready adsorption by carbons activated to take up basic substances.

    The Vitamine Manual

  • Suzuki, Shimamura and Odake also used the phosphotungstic precipitation method and claimed to have prepared the crystalline antineuritic substance which they called oryzanin in the form of a crystalline picrate.

    The Vitamine Manual

  • Funk for example has shown that if the phosphotungstic precipitate is treated with acetone it is possible to separate it into an acetone soluble and an acetone-insoluble fraction and that the curative fraction is in the latter.

    The Vitamine Manual

  • AND FUNK, C.: The chemical investigation of the phosphotungstic precipitate from rice polishings.

    The Vitamine Manual

  • For negative staining of VLPs, sucrose gradient-purified VLPs were applied to a carbon-coated formvar grid, and the grid was stained with 1% phosphotungstic acid.

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  • Samples were absorbed to 300 µm holey formvar/carbon coated grids for ≈ 1 minute before a brief rinse in water, and negatively stained for 1 minute with 1% phosphotungstic acid.

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