Text-book of physiological chemistry in thirty lectures by unknow

Author:unknow
Language: eng
Format: epub
Tags: Biochemistry
Publisher: New York, J. Wiley & sons; [etc., etc.]
Published: 1908-03-25T05:00:00+00:00

Camerer and Soldner * have made a similar comparison between humjtf milk and the ash of infants:

» Abdcrlialdcn: Z. physiol. Chem. 26, 498 (1899).

» G. V. Bunge: Z. Biol. 10, 323 (1874).

» Abdcrhaldcn: Z. physiol. Chem. 26, 65 (1898).

« Abderhalden: ibid. 27, 356 (1899).

• Z. Biol. 40, 526 (1900) ; 41, 37 (1900); 44, 61 (1903).

INORGANIC FOODS.

369

Hugonnenq* obtained quite similiar values:

Kcept as regards the composition of the human infant and human :, we find by a comparison of the corresponding values that there is a dng agreement between the ash of the young animal and that of the :. In the case of human beings, however, we do not find any such <ement. Bunge explains this fact by the assumption that the ash •ent of milk has not only the task of building up tissue, but also serves be preparation of the excreta, especially the urine. The more rapid growth of the suckling, the less apparent will be the influence of the T function. It is, therefore, in general not to be expected that the 3ntage composition of the milk and that of the infant will agree so ly in the case of human beings as with animals, such as dogs, rabbits, guinea pigs, which require the mother's milk for but a short time after , but are soon placed upon a diet of green fodder. It is easy to see a milk corresponding closely to the chemical composition of the young ^gards the inorganic constituents will be more suitable for animab h develop very rapidly, whereas with species which develop more ly, the building up of the separate tissues does not take place so uni-ly and there are not so many changes taking place at the time when growing organism changes to another source of nourishment. « now come back to our first question: Does the suckling when it idons the mother's milk and passes to other food receive a sufl&cient »1y of inorganic salts? The following table gives a summary of the unts of inorganic substances contained in the more important foods: *

LECTURE XVI.

It is evident from these values that most of the foods are deficient in liu alone, as compared with milk. Now while we are not justified in assumii that the lime-content of milk is to be considered as the normal amoui required for man's later development, still, on the other hand, we muj not forget that probably the " law of the minimum " holds for aninu organisms as well as for plants. Now lime plays a quite particular pai in the development of the organism, especially for certain tissues, tl bones and teeth. It is clear, therefore, that the system must have a adequate supply of the lime at its disposal. Of course the fully devdopi organism requires lime as well, for even then, as we have already se^ there is a constant building up and wearing down of tissue, and especial of bony tissue. The following table gives the amount of lime present many of our foods.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.