[Nicotinic acid in dust-gas emissions from the biochemical industrial plants producing yeast for animal feed].

The presence of nicotine acid in the dustgaseous pollution from biochemical plants producing fodder yeast has been shown. Its allergic and sensitizing role compared to the same properties of protein-containing dust has been pointed out. It has been suggested that MAC of nicotine acid should be established for the sanitary-protective zone of microbiological industry enterprises.