Note on a quantitative skatole colour reaction for fructose

The quantitative determination of fructose with skatole and hydrochloric acid.

Some studies on the metabolism of fructose in liver homogenates recently undertaken in this laboratory required a more accurate quantitative method for fructose estimation than those described previously. A survey of the literature revealed the possibility of the quantitative adaptation of the color reactions between ketoses and certain substituted indole derivatives. The formation of a purple ...

A Note on: Alternative Quantitative Measurements of Growth and Welfare for Policy Analysis

Measuring development, growth and welfare is an important issue in normative and positive economics.The issue is more critical in developing economies where a good statistical indicator of income, livingstandard or poverty is crucial for decision-makers in corporate, government, non-government andinternational organizations in their for-profit or non-profit plans to promote business and trade, ...

Viii. a Specific Colour Reaction for Ergosterol

THE unique function of ergosterol as the parent substance of vitamin D made it desirable to find a colour reaction for it, by means of which it could be detected in the presence of other sterols. In searching for such a reaction, the property of formaldehyde of shifting the colour from the red into the blue part of the spectrum in the usual colour reactions of sterols [Whitby, 1923; Rosenheim, ...

Simple colour reaction for alkaptonuria.

Note on a Skin Reaction in Pneumonia

The present paper describes the results observed when pneumococcus antigen, prepared in the same way as for the anaphylactic experiments described in the preceding article, 1 was injected intracutaneously into a series of pneumonia patients, and into controls. The same method has been employed by Clough, 2 who reached the conclusion that these injections had in general an irritant effect, and t...