Читать книгу Foods and Their Adulteration - Harvey Washington Wiley - Страница 11

—Under this term is included the fats and oils, the term fat being applied to animal fat and the term oil to vegetable products. These bodies are all soluble in ether and therefore are grouped together under the term “ether extract.” There are some fats both in animal and vegetable substances insoluble in ether, but they exist in minute quantities and therefore are not separated from the extracts, but the whole matter is given together and represents practically the fats and oils in food.

There are also minute quantities of bodies not fats in foods soluble in ether, and these are included in the ether extract.