Losses in boiling vegetables and the composition and digestibility of potatoes and eggs / by H. Snyder, Almah J. Frisby, and A.P. Bryant.

  • Snyder, Harry, 1867-1927.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: Losses in boiling vegetables and the composition and digestibility of potatoes and eggs / by H. Snyder, Almah J. Frisby, and A.P. Bryant. Source: Wellcome Collection.

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    point. The approximate amounts and the composition of each food consumed per day are shown in the following table: Amount and composition of preliminary daily diet. Solid matter. Nitrogen. Protein. Fat. Carbo¬ hydrates. Ash. Fuel value. Grams. Grams. Grams. Grams. Grams. Grams. Calories. Potatoes (1,587 grams). 362. 88 6. 35 39. 92 0. 45 299. 38 14.51 1,394 Eggs (8, hard boiled). 113. 40 8.16 50. 80 48.99 4.08 664 Milk (710 cubic centimeters) . 90. 72 4. 08 25.40 27.22 30. 39 4. 98 482 Cream (237 cubiccentimeters). 40.82 .91 5.44 34. 02 3.63 1. 36 355 Total. 607.82 19. 50 121.56 110.68 333. 40 24. 93 2, 895 This diet was given for three days before the experiment began in order that the body might get into equilibrium with it. After breakfast on the day the experiment commenced and after din¬ ner on the day it closed some charcoal in gelatin capsules was taken, in order to identify the feces belonging to the food of the experiment proper. The fresh feces weighed on an average 204 grams per day and the urine 1,108 grams. The food, urine, and feces were analyzed. The composition of the total food eaten and of the total feces, together with the nutrients contained in the food eaten and lost in the feces and the percentage of each nutrient digested, are shown in the following tables: Weight and composition of food eaten and of feces for four and one-third days. Weight. Total organic matter. Protein. Fat. Carbohy¬ drates. Ash. Fuel value per gram, calcu¬ lated. Grams. Per cent. Per cent. Per cent. Per cent. Per cent. Calories. Potatoes . 6, 380 28.85 9. 50 0. 08 19. 27 0. 90 0. 935 Ectrs. 1, 800 23. 86 12. 63 11. 23 . 86 1. 739 Milk. 2, 722 12. 27 3. 25 4.01 5.01 .75 . 757 Cream. 908 17. 41 1. 69 14. 00 1.72 .60 1. 465 Feces. a 206 82. 33 26. 56 14. 30 b41.47 16. 27 4. 490 a Water-free substance. b One and four-tenths per cent is allowed for biliary products. Carbohydrates = 100.00 — (Protein Fat + Ash + 1.40). Weights and fuel values of nutrients in food eaten and in feces for four and one-third days; and weights, fuel value, and percentages of nutrients digested. Total organic matter. Protein. Fat. Carbohy¬ drates. Ash. Fuel value. Potatoes. Grams. 1, 394. 0 Grains. 159.5 Grams. 5.1 Grams. 1, 229. 4 Grams. 57.4 Calories. 5,965 Ecera.-. 429. 5 227.4 202.1 16. 5 3 130 Milk. 334. 0 88.5 109. 1 136. 4 20. 4 2 060 Cream ..... 158.0 15.3 127.1 15.6 5.4 1,330 Total eggs milk, and cream. 921. 5 331.2 438.3 152.0 42.3 6, 520 T rvt.nl from wli nle food.. 2, 315. 5 490.7 443.4 1,381.4 99.7 12, 485 379 Fuel value cf urea (435.9X0.87). Net fuel value of food eaten. 12,106 926 11, 180 6 192 Feces i. e undigested residue... 169. 9 54. 8 29. 5 85 6 33 6 A mount digested in whole food. 2,145. 6 435. 9 413.9 1, 295. 8 152. 0 66.1 Amount eggs, milk, and cream digested. A mount potatoes digested_.......... ’ 882. 1 321.2 1,263.5 Per cent. 92. 7 114. 7 1, 143.8 Per cent. 93.8 93.0 4,988 Per cent. 89. 5 83.6 Per cent digested of whole food. Per cent. 88. 8 Per cent. 93.3 Per cent, (a) Per cent digested of potatoes... 90. 6 71.9 a An unknown amount of salt was eaten, which renders the amount of mineral matter digested somewhat doubtful.