Besides being necessary in building
up the body and keeping it in a healthy condition, water has a special
function to perform in cooking, as is explained later. Although this
food substance is extremely essential to life, it is seldom considered
in the selection of food, because, as has just been mentioned, nearly
all foods contain water.
13. Mineral Matter.--Ranking next to water in the quantity contained in
the human body is mineral matter. This constituent, which is also called
_ash_ or _mineral salts_, forms the main part of the body's framework,
or skeleton. In the building and maintaining of the body, mineral salts
serve three purposes--to give rigidity and permanence to the skeleton,
to form an essential element of active tissue, and to provide the
required alkalinity or acidity for the digestive juices and other
secretions.
The origin and distribution of these mineral substances are of interest.
Plants in their growth seize from the earth the salts of minerals and
combine them with other substances that make up their living tissue.
Then human beings, as well as other living creatures, get their supply
of these needed salts from the plants that they take as food, this being
the only form in which the salts can be thoroughly assimilated. These
salts are not affected by cooking unless some process is used that
removes such of them as are readily soluble in water.
Pages:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25