Army manual of hygiene and sanitation, 1934 / [War Office].

Date:
1941
Catalogue details

Licence: Public Domain Mark

Credit: Army manual of hygiene and sanitation, 1934 / [War Office]. Source: Wellcome Collection.

    50/310 (page 52)
    A and Bas well as iron and calcium ; oatmeal contains-Vitamins A and E, and also phosphorus; and eggs contain Vitamins A and D and iron. Such foods are therefore called the protective foods, and consist mostly of dairy products (milk, butter, cheese and eggs), green vegetables (especially salads) and fish. Energy value of food.—The conversion of food into energy for work is accompanied by the production of heat and the amount of heat produced is, therefore, used to estimate the energy value of different foods. The standard unit for measuring the energy of food is the large Kalorie; this is the amount of heat required to raise one kilogramme of water one degree centigrade. . Energy is obtained from proteins, carbohydrates and fats, of which the energy values are approximately :— proteins, 4-1 Kalories per gramme. carbohydrates, 4-1 Kalories per gramme. fats, 9:3 Kalories per gramme. A full-grown man requires approximately 1,700 Kalories a day for the work of keeping the body alive while at rest; in addition, he requires another 1,300 Kalories a day while doing ordinary routine work, and 1,800 to 2,000 when doing hard work or undergoing exertion, as on the liné of march. This *means that approximately 3,000 Kalories must be provided daily in the food for the trained soldier doing ordinary routine work in peace time. An extra allowance, however, must be made for the young growing recruit under training and for the soldier doing hard work, and for these the daily amount of food should be increased to provide 3,500 Kalories or more. It has already been stated that the body requires 50 grammes of protein daily for body building; this 50 grammes will, therefore, give 205 Kalories and the remaining 2,795 - Kalories can be made up with additional proteins and also carbohydrates and fats. Provided that sufficient minerals, vitamins and proteins are included, the remaining Kalories can be made up according to requirements. An average diet may be taken to consist of :— proteins, 100 grammes = 410 Kalories. fats, 100 grammes ==. 990 carbohydrates, 500 grammes =2,050 3) 3? Petal os. ss - > OU 99 and, deducting 10 per cent. for loss in preparation and cooking, this will give 3,051 Kalories. The Kalorie value of the army peace-time ration before deduction of 10 per cent. for wastage is approximately 3,600