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POLYPHENOL OXIDASE ACTIVITY AND THE METABOLISM OF GLYCINE BY POTATO TUBER SLICES
Author(s) -
ABUKHARMA D. A.,
WOOLHOUSE H. W.
Publication year - 1967
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1967.tb06014.x
Subject(s) - catechol , glycine , polyphenol oxidase , chemistry , catechol oxidase , respiration , serine , stimulation , biochemistry , metabolism , oxidase test , enzyme , amino acid , botany , biology , peroxidase , neuroscience
S ummary Glycine and catechol when added separately to both fresh and washed potato‐tuber slices stimulated their oxygen uptake and CO 2 production. Glycine and catechol added together produced an additive stimulation of the respiration of fresh tuber‐slices but gave no stimulation of respiration by washed slices. The inhibitory effect of 3,4‐dichlorophenyl serine on the oxidation of glycine by unwashed slices suggests that this step in the degradation was probably mediated by polyphenol oxidase.