The Journal of Biological Chemistry, Volume 21

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American Society for Biochemistry and Molecular Biology, 1915 - Biochemistry
Vols. 3-140 include the society's Proceedings, 1907-41
 

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Page 222 - 1 The expenses of this investigation were shared by the Connecticut Agricultural Experiment Station and the Carnegie Institution of Washington, DC 1 TB Osborne and LB Mendel: Feeding Experiments with Isolated Food-Substances, Carnegie Institution of Washington, Publication A'o. 156, pt. ii, p. 80, 1911; see also Ztschr. f. physiol. Chem., Ixxx, pp. 315-16, 1912.
Page 369 - Water to 1000 cc. This solution is standardized against the silver solution by adding 5 cc. of the latter to 5 cc. of Solution III and titrating with the iodide solution to the blue end-point. The iodide solution is then diluted to such a degree that
Page 173 - To tubes 2, 3, 4, and 5 add 0.5 cc. of distilled water. (c) From tube 2 remove 0.5 cc. of its mixed contents and add to tube 3. Mix 'thoroughly and add 0.5 cc. from tube 3 to tube 4. Repeat for tube 5. We now have dilutions of gastric
Page 369 - The titration is performed in the presence of nitrous acid and starch, so that the first drop of iodide in excess of the silver present is changed to free iodine and gives the blue starch-iodine color. The optimum acidity for the end-point is fixed by the addition of trisodium citrate in amount equivalent
Page 173 - shows four times the tryptic power of undiluted gastric juice; taken as a standard as 1, therefore, its tryptic value is 4. • (i) Controls of boiled gastric contents plus casein solution, and of distilled water plus casein solution, treated as above stated, must show no digestion, and become turbid on addition of the precipitating solution.
Page 91 - J The expenses of this investigation were shared by the Connecticut Agricultural Experiment Station and the Carnegie Institution of Washington, DC 'TB
Page 545 - 1 The expenses of this investigation were shared by the Connecticut Agricultural Experiment Station and the Carnegie Institution of Washington, DC
Page 222 - EDNA L. FERRY AND ALFRED J. WAKEMAN. (From the Laboratory of the Connecticut Agricultural Experiment Station and the Sheffield Laboratory of Physiological Chemistry in
Page 368 - the flask. Two drops of 50 per cent acetic acid are added, the flask is filled to the mark with water, the contents are mixed by inverting the flask, and heated in a bath to 100 for ten minutes. By keeping the stopper loosely in place
Page 370 - III. A solution, for use in the final titration, containing sodium citrate, sodium nitrite, and starch, which substances respectively regulate the acidity, provide an oxidizing agent for the iodide, and serve as indicator. Sodium citrate (Na

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