Hydrolysis of amandin from the almond / by Thomas B. Osborne and S.H. Clapp.

  • Osborne, Thomas B. (Thomas Burr), 1859-1929.
Date:
[1908]
Catalogue details

Licence: In copyright

Credit: Hydrolysis of amandin from the almond / by Thomas B. Osborne and S.H. Clapp. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Copper, 0.1983 gm. subst. (dried at no°), gave 0.0292 gm. CuO. Calculated for Ci2H2804N8Cu (N08)2 = Cu 11.87 Per cent- Pound = Cu n.77 “ “ Lysine. The lysine in the two hydrolysis solutions was converted into the picrate, of which 0.5845 gm. was obtained in the solution to which the sodium chloride had been added and 0.8833 gm- in the solution without this salt. This is equivalent to 0.2277 gm. and 0.3441 gm. lysine respectively, or 0.46 and 0.70 per cent, of the amandin. Nitrogen, 0.4260 gm. subst., required 7.9 c.c. 5/7 N—HC1 (Kjeldahl- Jodlbauer). Calculated for CoH^CbN., • CGH307N3 = N 18.67 Per cent. Found = N 18.54 “ “ The results of this hydrolysis were the following: Glycocoll . Per cent. . . 0.51 Serine . Per cent. . . . ? Alanine . . 1.40 Tyrosine 1.12 Valine . . . . 0.16 Arginine . . . II.85 Leucine • • 4-45 Histidine . . . . I.58 Proline .... . . 2.44 Lysine . . . . O.70 Phenylalanine • • 2.53 Ammonia . . . . 3.70 Aspartic acid . . . 5.42 Tryptophane . . . . present Glutaminic acid . . . 23.144 59.00 * Osborne and Gilbert: This journal, 1906, xv, p. 350.