Latent phenolase in extracts of broad-bean (<i>Vicia faba</i> L.) leaves. Activation by acid and alkali

Abstract

J. M. BOWVNESS I957 of glucose greater than 100 %. Dische (1947) found that serum proteins in a concentration of 0*1 % produced a 20 % decrease in the intensity of the colour given by glucuronolactone. The failure to observe any decrease in the readings obtained with glucuronolactone in the present work may have been due to the use of a test blank, and of 0 2 % (instead of 0 1 %) ethanolic carbazole.