It may also be diluted
with other liquids and used for a beverage. Then, again, various kinds
of fruit juices are subjected to a process of fermentation and, through
the production of another acid, are made into vinegar and wines. When
apples are treated in this way, the fermentation produces _acetic acid_
and, in addition, a certain amount of alcohol. It is on this principle
that the making of wines depends.
19. WATER IN FRUIT.--The water content of fresh fruits is very high,
reaching 94 per cent. in some varieties. Dried fruits, on the other
hand, contain much less water, their content being in some cases as low
as 15 to 20 per cent. It naturally follows that the fruits low in water
are high in food value, while those containing considerable water have
in their composition less of the material that adds food value. The high
percentage of water in fresh fruits, together with the acids they
contain, accounts for the fact that these fruits are so refreshing.
Fruits of this kind, in addition to having this refreshing quality, help
to provide the necessary liquid in the diet.
20. TABLE SHOWING COMPOSITION AND FOOD VALUE OF FRUITS.
Pages:
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31