Green fruits contain less sugar than do ripe ones,
and so they are more sour to the taste. In some cases, the carbohydrate
found in green fruits is partly in the form of starch, which in the
process of development is changed to sugar. The cellulose of green
fruits, especially that distributed throughout the pulp of the fruit
itself, is usually tougher and harder than that which is found in the
same fruit after it has ripened.
22. DIGESTIBILITY OF FRUITS.--The ripeness and freshness of fruits
determine their digestibility to a great extent, but the peculiarities
of each person have much to do with this matter. Many times a particular
fruit will agree with almost every one but a few exceptional persons,
and, for no apparent reason except their own peculiarities of digestion,
it disagrees very badly with them. Abnormal conditions of the alimentary
tract, however, cannot be taken into consideration in a general
discussion on the digestibility of foods, for it is a subject that
cannot be treated except from a dietetic standpoint. A safe rule to
follow when a fruit is found to disagree with a person is to omit it
from that person's diet.
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