Fiber is classified as soluble (oat bran, apples, citrus, pears, peas/beans, psyllium, etc.) and insoluble (wheat bran, cabbage, peas/beans, rne through bacterial action).
FIBER, SOLUBLE AND INSOLUBLE
Meaning of FIBER, SOLUBLE AND INSOLUBLE in English
English dictionary of medicine. Английский словарь медицины. 2012