Abstract
1) Benzaldehyde, anisaldehyde, and other aldehydes, so far as was found in the present tests, are more readily oxidised by xanthine- and aldehyde oxidase preparations, than d-trans-7-aldehyde-π-apocamphor (vitacamphor). 2) Decreased. dehydrogenase activities induced by aldehydes returned to the normal level by the addition of cysteine, glutathione and ascorbic acid. 3) Vitacamphor underwent equimolar combination with cysteine, forming an aldehyde-thiol compound. It also combined to a certain extent with glutathione, but not with ascorbic acid. 4) Vitacamphor and other aldehyde appeared to catalyze the non-enzymic oxidation of cysteine. 5) Ascorbic acid with the dehydrogenase systems seems to participate to some extent in the reduction of vitacamphor.
