caffetannic

There are several other constituents, including certain innocuous so-called caffetannic acids, that, in combination with the caffeol, give the beverage its rare gustatory appeal.

All About Coffee 1909

The caffeine and caffetannic acid readily dissolve in cold water, but the delicate flavoring oils require

The Suffrage Cook Book L. O. Kleber

It is thus apparent that even in green coffee there is no definite compound "caffetannic acid," and there is even less likelihood of its being present in roasted coffee.

All About Coffee 1909

The so-called "caffetannic acid" is really a mixture which has among its constituents chlorogenic acid

All About Coffee 1909

As has been previously pointed out [382], the term "caffetannic acid" is a misnomer; for the substances which are called by this name are in all probability mainly coffalic and chlorogenic acids.

All About Coffee 1909

His claim is that the name "caffetannic acid" is a misnomer and should be abandoned.

All About Coffee 1909

One of the few chemical investigations of the growing tree is the examination by Graf of flowers from 20-year-old coffee trees, in which he found 0.9 percent caffein, a reducing sugar, caffetannic acid, and phytosterol.

All About Coffee 1909

In view of this condition of uncertainty in composition, necessity for great care in manipulation, and ever-present danger of contamination, the significance of "caffetannic acid analysis" fades.

All About Coffee 1909

It has been demonstrated in chapter XVII that there is no definite compound "caffetannic acid," and that the heterogeneous material designated by this name does not possess the properties of tanning.

All About Coffee 1909

University of Pittsburgh in 1915; and Dr. Raymond F. Bacon submitted a report that showed that the boiling method produced the highest percentage of caffetannic acid and caffein; the F.ench drip process the lowest.

All About Coffee 1909