1960 Volume 24 Issue 7 Pages 633-637
The higher activities were obtained at pH 4.8 and 5.4 in the crude enzyme of peroxidase and inhibited by potassium cyanide. β-glucosi-dase was present and its opt. pH was 4.8. Laccase was scarcely found in the fruits. Some organic acids were detected by paper chromato-graphy; succinic, malic, citric, tartaric, quinic and shikimic acids. Especially, both enzymes and shikimic acid were shown to decrease with proceeding of lignification.
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