biochemical catalysts in life and industry by Jean Effront

By Jean Effront

Initially released in 1917. This quantity from the Cornell collage Library's print collections used to be scanned on an APT BookScan and switched over to JPG 2000 structure by way of Kirtas applied sciences. All titles scanned disguise to hide and pages could contain marks notations and different marginalia found in the unique quantity.

Show description

Read or Download biochemical catalysts in life and industry PDF

Best chemistry books

Understanding Petroleum Reservoirs: Towards an Integrated Reservoir Engineering and Geochemical Approach (Geological Society Special Publication No. 237)

Reservoir geochemistry can throw mild at the beginning of petroleum reservoir fluid heterogeneities at various spatial and temporal scales. this data can be utilized to appreciate the formation and function of petroleum accumulations, and is a helpful instrument for exploration, improvement and creation options.

Extra resources for biochemical catalysts in life and industry

Example text

Fluoride, like oxalate, is a decalcifying agent and it is this precipitation of the calcium ions that makes plasma non-coagulable. But why is it that on the final addition of CaCk, coagulation no longer takes place, as is the case with oxalated plasma? This difference comes from the fact that calcium fluoride, in being precipitated, carries with it, to a more or less extent, not only fibrinogen but also serozyme, the latter even more completely than fibrinogen. c. c. c. T % sodium oxalate solution.

BLOOD PLASMAS NOT SPONTANEOUSLY COAGULABLE. In the preceding chapter we became familiar with the principal constituents which come into play in the phenomenon of the coagulation of blood. We have studied thrombin and fibrinogen, and established the relation which exists between the two. We now return to the question and, excluding the theories which we have just described, will try to penetrate the actual mechanism of coagulation by analytical methods. Let us ask first of all why the blood, liquid in the blood-vessels, coagulates on leaving them.

The tubes are allowed to stand for several hours, then the two mixtures are centrifuged and the clear 56 BIOCHEMICAL CATALYSTS liquids decanted. I t is then found that the first liquid (A), which has been in contact with calcium fluoride, with addition of CaCl 2 or thrombin, does not coagulate, and when heated to 6o°-65 o 5 it is no longer turbid. The fibrinogen as well as the active substance has been carried down by the precipitate. On the other hand, the second liquid (B), which has not been in contact with the calcium fluoride, is coagulated by addition of CaClo, or of serum, and when heated to 6o°-65° becomes very turbid.

Download PDF sample

Rated 4.35 of 5 – based on 15 votes