The protein constituents of egg white.

  • Thomas Burr Osborne
Date:
[1900]
Catalogue details

Licence: In copyright

Credit: The protein constituents of egg white. 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.

    6/28 (page 354)
    Table I.—The Weight, Rotation, Composition and Heat Coagulai Temperatures of the Fractional Precipitates of Egg-White. Calculated Ash-free. Prepara- Weight I>] n c. H. N. s. p. 0. Ash. Coagula- tion tem- Remarks. 1 ticn. grams. perature. A.i.a. 26.88 -21° 9f 50.69 6.71 I4.49 2.280 trace 25.830 0-53 T 70° Coagulum near -■ appears on boilir 1 r 75 reappears on co A.i.b. 7.28 — 50.95 6.85 14.82 1.938 none 25442 I.4I — A.2. 16.00 -3i° 50' 52.76 7.12 I54SK I5.5SK 1.687 0.123 22.770 O.4I T 64° F 70° Practically at. B agulated above 7 1 A.3. n.56 52.40 7.12 I5-77K 15.66K 1.729 0.002 23.029 0.28 T 66° F 70° B.i. 36.00 -29° 53' 52.59 7.10 I5-59K I5 5IK 1.613 0.126 23.021 O.I36 T 70° F 710 None coagu I below 70°. B.2. 59-°° -290 13' 52.78 7.O9 I5-54K 15.60A 1.619 0.127 22.814 0.150 T 68° F 70° None coagu-J below 68°. C.i. 45-00 -30° 2' 52.75 7-3i I5-57A I543K 1.613 0.131 22.696 0.350 T 69° F 710 None coagu 1 below 69°. ( I5-57K 15.63A Only a trace cel C.2. 106.00 -30°- 48' 52.79 7.00 1.634 0.126 22.850 0.20 T 62 F 65° lated at this tempi ture. The rest sel ated at 70° and akl T 57° Considerable cc 1 C.3. 32.40 -34° 2' 52.24 7.08 I5.55A 1-755 0.085 23.290 O.29O F 57° lated below 70°, 1 most above 70®. 23.188 T 510 Much coagul 1 D.i. 30.00 -34° 18' 52.41 6.93 I5-57A 1.796 0.106 0.14 F 53° below 70°, but 11 above 70°. 0.2. 20.00 -37° 14' 52.29 6.94 15.61 A 1.886 0.062 23.212 0.04 About 50 p c. co; 1 lated below 6o°, al < 0.3. 55.00 -41°22' 51.62 6.94 1523A 15 27IC 1.972 0.048 24.170 0.10 T 520 F 55° 3S p.c. at 70° andab <i The rest did not agulate. Aqueous solutioi heating, formed a c 1 0.4. 10.00 -5i° 3o' 50.56 6.80 13.64A I3-54A 1.997 2.017 trace 27.033 O.II T 62° F 64° jelly, bait sol. co; < lated at 64°. 1 \ above. Muc’i ur agulated. Probably about t * E.i. 6.20 -33° 36' 5I-91 6.94 15.02A 15.27F 1.700 1.710 trace 24.285 0.49 * 5y F 600 p c. was coagu la below 70°, much ab 70°. Less appeared to agulate below 70°ti of E.i when heatec water with no salt.: E.2. 15-65 -43° 7' — — Less separated be e,3. 22.50 -49° 5' — — — — — ~ “ 70° than of E.2. wl heated in water. Not much scparai E.2.a. 6.00 — 52.40 6.91 15.69A 1.780 0.090 23.131 0.66 1 — below 70° when hea in water. Not much separa E.3.a. 8.60 — 5J-94 6.84 15.31A 1.629 0.045 24.236 0.36 below 70° when hea in water. e.4- 5.00 -6i° 38' 49.02 6.45 12.71 A 2.379 0.11 29.441 0.750 — No coagulum.