The Determination of Histamine in Bacterial Cultures

The Determination of Histamine in Bacterial Cultures.

The Production of Histamine in Bacterial Cultures.

In a previous paper (Eggerth, Littwin, and Deutsch, 1939) a simple and convenient method for the quantitative determination of histamine in bacterial cultures has been described. By this method, the cultures are made alkaline with sodium carbonate, then extracted in a special apparatus with a mixture of chloroform and amyl alcohol, the histamine passing into a layer of dilute sulfuric acid. Amm...

determination of maximal singularity free zones in the workspace of parallel manipulator

due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...

The quantitative determination of indole in bacterial cultures.

The Photoelectric Determination of Indole in Bacterial Cultures.

Many colorimetric tests for indole have been described since Gnezda (1899) first described the oxalic acid test. These have been ably discussed and compared by Fellers and Clough in 1925, together with a very complete bibliography. They concluded, as a result of comparative studies, that the Ehrlich test (1901) was the most accurate, reliable and simple for indole and skatole when unmixed. The ...