A Study of Methods for the Estimation of Reducing Sugar in Bacteriological Media

Carbohydrate Metabolism of Organisms of the Genus Mycobacterium

“…In several control tests it was found that more constant results were obtainable when no effort was made to remove the protein from the media by precipitation. This agrees with the results recently reported by Magee and Smith (1930).…”

Metabolism of Pathogenic Bacteria I

“…The writer finds, however, that adequate removal of interfering substances requires a larger amount of lead than is recommended by these authors, and low results are often obtained. These observations thus agree with those of Magee and Smith (1930). The Somogyi procedure applied to culture media provides-excellent removal of interfering materials and furthermore possesses-the distinct advantage of removing no glucose.…”

Determination of Carbohydrates in Bacteriological Culture Media

“…of glucose per cubic centimeter means an error of 2 to 8 per cent in the recovery of added glucose. Magee and Smith (1930) using the Shaffer and Hartmann method for the determination of glucose in a meat infusion broth, report that an accuracy greater than :i:10 per cent cannot be obtained. The most accurate results were obtained directly upon the medium without precipitation of the protein.…”