The
juice vesicles (or
pulp) of a citrus fruit are the membranous content of the fruit’s
endocarp. The vesicles contain the juice of the fruit. The pulp is usually removed from fruit juice by filtering it out.
The color of the pulp is variable, depending on the species and the ripening stage. Usually, it has the color of the outer peel (
exocarp)...
Mammals do not have the ability to break down cellulose directly. Some ruminants like cows and sheep...
Lignin is indigestible by animal enzymes, but some fungi and bacteria are able to secrete ligninases which can biodegrade the polymer...
Pectin is a natural part of human diet, but does not contribute significantly to nutrition...In human digestion, pectin goes through the small intestine more or less intact...
Dietary Fiber (sometimes called roughage) is the indigestible portion of plant foods...
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