A study of the proteids of the corn or maize kernel.
- Russell Henry Chittenden
- Date:
- 1892
Licence: Public Domain Mark
Credit: A study of the proteids of the corn or maize kernel. 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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![(Albumin C2) was washed thoroughly with water, alcohol and ether, and after being dried at iio° C. was analysed. Air-dry it weighed 2.28 grams. Analysis of Albumin C~, First Coagulum. I. 0.3226 gram substance gave 0.1927 gram HaO — 6.64 per cent. H, and 0.6092 gram C02 zz 51.50 per cent. C. II. 0.3293 gram substance gave o. 1985 gram H20zz6.69 per cent. H, and 0.6195 gram COa ~ 51.31 per cent. C. # III. 0.3737 gram substance gave 46.3 cc. N at 30 C. and 774*2 mm. pres- sure zz 15.68 per cent. N. IV. 0.4015 gram substance gave 0.0038 gram ash zz 0.94 per cent. Percentage Composition of the Ash-free Substance. Average. 51.97 51.78 .. 51.88 6.70 6.75 .. 6.73 15.89 15.89 ]■ 25.50 100.00 The filtrate from the above coagulum was concentrated still further, without giving any appreciable coagulum, then saturated with salt and precipitated by the addition of 0.2-per cent, hydro- chloric acid. The precipitate was dissolved in water, dialysed until the salt had been entirely removed, and then evaporated to dryness on the water-bath. During this last evaporation a considerable coagulum formed, which was collected, washed, dried and analysed. It weighed 1.22 grams (Albumin C2, second coagulum). Analysis of Albumin C2, Second Coagulum. I. 0.4488 gram substance gave 0.2600 gram H30 zz 6.44 per cent. H, and 0.8224 gram COa— 49.98 per cent. C. II. 0.3050 gram substance gave 41.8 cc. N at 30 C. and 755.8 mm. pres- sure zz 16.93 Per cent. N. III. 0.3769 gram substance gave 0.0077 gram ash — 2.04 per cent. C H N S O Percentage Composition of the Ashfree Substance. C H N S O 51.02 6.57 17.28 Average. 51.02 6.57 17.28 25,T3 100.00](https://iiif.wellcomecollection.org/image/b2246976x_0051.jp2/full/800%2C/0/default.jpg)
