A chromogenic organism capable of decomposing tannic acid

An agar-decomposing organism isolated from soil.

A complex carbohydrate, agar is attacked by very few organisms and in text books published as recently as 1900 we find the statement that agar is not liquefied by any organism. Since that time a few agar decomposing organisms have been reported in the literature, the first being a species isolated from sea water and described by Gran in 1902. This organism, which has been named Bacillus gelatic...

Tannic acid Datasheet

The hepatocarcinogenicity of tannic acid.

In the group of chemical hepatocarcinogenic agents, the number of which has steadily increased in recent years (:$7), tannic acid deserves attention. Owing to its astringent effect, this compound was formerly used widely in therapy. The local treatment of thermal burns with tannic acid was suggested by Davidson (1935), and his procedure was generally employed in Hungary during World War II. I t...

Tannic Acid in the Treatment of Burns

To ilic Editor, The Indian Medical Gazette. Sir,?During the past few years, tannic acid has come into considerable vogue for the treatment of burns. As House Surgeon in the Sir J. J. Hospital in Bombay in 1927-28 I had to treat many cases of burns, but was unsuccessful with tannic acid. I asked my chief, Mr. S. R. Moolgavkar, f.r.c.s., as to the reason for this, and he gave me the following adv...

Complexes of Ferrous Iron With Tannic Acid

Solutions of tannic (digallic) acid at concentrations of 5 or 50 parts per million reduce dissolved ferric iron to the ferrous state when the pH is less than 4. In solutions with a pH of 4 or more, a black material containing ferric iron and tannic acid is precipitated. In a solution containing 500 parts per million of tannic acid, a ferrous complex forms at a pH of more than 5. This complex is...