We have not found in our work any region of ultra violet energy which will produce a stimulation of yeast growth in any synthetic medium used. In every case the action of the ultra violet radiations has produced a toxicity in the media in proportion to the amount of ultra violet received. Even fifteen minutes of ultra violet light at 16 cm. from the lamp produced such a toxicity in the medium that the yeast count twenty-four hours afterwards was ten per cent below the control count.
Proceedings of the Iowa Academy of Science
©1926 Iowa Academy of Science, Inc.
Bailey, A. C.
"The Toxic Effect of Ultra Violet Radiations upon Yeast and Yeast-Growing Media,"
Proceedings of the Iowa Academy of Science, 33(1), 243-244.
Available at: https://scholarworks.uni.edu/pias/vol33/iss1/63