. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. VEGETABLE FOODS. 165 albumen, 2 per cent, fat, 53 per cent, carbo-hydrates, and per cent, cellulose. The preparation of bread depends upon the fermentation produced through the action of the yeast-plant in rye- or wheat-meal mixed to a thick paste with water, the so-called dough, and allowed to ferment at about 30° C. Through the action of the yeast part of the starch is converted into dextrin and sugar, of which a part again undergoes fur
. The physiology of the domestic animals; a text-book for veterinary and medical students and practitioners. Physiology, Comparative; Domestic animals. VEGETABLE FOODS. 165 albumen, 2 per cent, fat, 53 per cent, carbo-hydrates, and per cent, cellulose. The preparation of bread depends upon the fermentation produced through the action of the yeast-plant in rye- or wheat-meal mixed to a thick paste with water, the so-called dough, and allowed to ferment at about 30° C. Through the action of the yeast part of the starch is converted into dextrin and sugar, of which a part again undergoes further decomposition into carbon dioxide and alcohol. The bubbles of the former serve to render the dough light and porous. In baking the gas-bubbles expand through the heat and render the bread still more. Fig. 55.—Section" of a Wheat-Grain, Magnified 610 Diameters, after Pekar. (Thanhoffer.) 1, epidermis; 2, epic&rpium; 3, endocarpium ; 4, testa; 5, tegmen; 6, periaperm j 7, endosperm. porous, and therefore more permeable to the digestive juices and more readily digestible, while in the action of the heat a certain amount of starch is still further converted into dextrin and sugar. The nutritive properties of bread depend upon the starch, dextrin, sugar, and albumen which are contained within it. Bread, therefore, contains all the nutritive principles in some amount, as a certain amount of oils and inorganic salts are also present, although the carbo-hydrates are present in the largest proportion. It has been estimated that a man, to obtain the necessary amount of albumen required for his daily ration, would have to consume three pounds of bread daily. Oats, rye, and corn also have their various constituents arranged. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, Robert Meade, 1854-. Phi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectphysiol, bookyear1890
