Determination of free amino acids by titration of the carbon dioxide formed in the reaction with ninhydrin
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TLDR
In the present method, the CO2 evolved by decarboxylating amino acids with ninhydrin is transferred to standard barium hydroxide and titrated as mentioned in this paper.About:
This article is published in Journal of Biological Chemistry.The article was published on 1941-11-01 and is currently open access. It has received 168 citations till now. The article focuses on the topics: Ninhydrin & Titration.read more
Citations
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The gasometric determination of free amino acids in blood filtrates by the ninhydrin-carbon dioxide method
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Chemical Composition and Physical Properties of Humic Substances
TL;DR: The processes of humification occur mainly under aerobic conditions as mentioned in this paper, where animals that live in the soil may initially reduce the size of the fresh organic residues, and further transformations are promoted by the activity of the enzymes of the bacteria and fungi living in soil.
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Relation between phosphate energy donors and incorporation of labeled amino acids into proteins.
Book ChapterDOI
Poly-α-Amino Acids
TL;DR: The X-ray study of synthetic polyamino acids is one of the possible approaches to the wider problem of the structure of natural proteins, with emphasis on α -amino acid residues in normal peptide linkage.
References
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Gasometric determination of carboxyl groups in free amino acids
TL;DR: The method here presented depends on the fact that a-amino acids, when boiled in water with an excess of ninhydrin (triketohydrindene hydrate) at pH 1 to 5, evolve the CO2 of their carboxyl groups quantitatively in a few minutes.
Journal ArticleDOI
A simple apparatus and procedure for determination of amino acids by the ninhydrin reaction
TL;DR: Investigators have adapted the manometric procedures as developed by Van Slyke (6,7) and others for the determination of liberated carbon dioxide to be more specific for amino acids in biological material than the classical nitrous acid reaction.