ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The seeds, leaves, and stem of velvet bean (Stizolobium aterrimum) contained high concentrations of L-DOPA and polyphenol oxidase. Polyacrylamide-gel electrophoresis revealed three polyphenol oxidase isoenzymes in the seeds of velvet bean, two in the leaves and stem. All isoenzymes were active with o-diphenols such as catechol, caffeic acid, d-catechin and L-DOPA. L-Tyrosine was not active to the isoenzymes. Polyphenol oxidase semipurified by ammonium sulfate fractionation exhibits a smaller Km for L-DOPA than other substrates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1978.tb02379.x
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