THE COMBINATION OF GELATIN WITH HYDROCHLORIC ACID

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The Combination of Gelatin with Hydrochloric Acid

1. Cooper's gelatin purified according to Northrop and Kunitz exhibited a minimum of osmotic pressure and a maximum of opacity at pH 5.05 +/-0.05. The pH of solutions of this gelatin in water was also close to this value. It is inferred that such gelatin is isoelectric at this pH and not at pH 4.70. 2. Hydrogen electrode measurements with KCl-agar junctions were made with concentrated solutions...

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The Combination of a Standard Gelatin Preparation with Hydrochloric Acid and with Sodium Hydroxide

It has been found possible to obtain constant dry weights of sheet gelatin only by drying in vacuo at temperatures below 100 degrees C. for a period of several weeks. Values are given for the ash and nitrogen content, the specific conductivity, and the isoelectric point of a standard gelatin preparation. By the method of E.M.F. measurements of cells without liquid junction, of the type Ag, AgCl...

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The Combination of Edestin with Hydrochloric Acid

Electromotive force measurements of cells without liquid junction, of the type Ag, AgCl, HCl + protein, H(2), lead to the conclusion that 1 gm. of edestin (or, more probably, edestan) combines with a maximum of 13.4 x 10(-4) equivalents of H(+) and 3.9 x 10(-4) equivalents of Cl(-), when the protein is dissolved in 0.1 M HCl.

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ژورنال

عنوان ژورنال: Journal of General Physiology

سال: 1929

ISSN: 1540-7748,0022-1295

DOI: 10.1085/jgp.12.4.495