Abstract
Summary
Folic acid whether commercial or aldehyde-free inhibits guanine metabolism and endogenous respiration in rat liver homogenates. Oxidation of folic acid itself in such systems is not clearly evident.
Oxidation of xanthine by a purified preparation of xanthine oxidase is strongly inhibited both by commercial and aldehyde-free folic acid. In a system containing only folic acid and the enzyme some oxidation of the folic acid appears to occur although this reaction is transient.
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