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Piceol
Piceol is a phenolic compound found in the needles and in mycorrhizal roots of Norway spruces (''Picea abies'').〔 Løkke H. Picein and piceol concentrations in Norway spruce. Ecotoxicol Environ Saf. 1990 Jun;19(3):301-9.〕〔Phenolics of mycorrhizas and non-mycorrhizal roots of Norway spruce. Babette Münzenberger, Jürgen Heilemann, Dieter Strack, Ingrid Kottke and Franz Oberwinkler, Planta, Volume 182, Number 1, pages 142-148, 〕 Picein is the glucoside of piceol.〔Picein and piceol concentrations in Norway spruce. Hans Løkke, Ecotoxicology and Environmental Safety, Volume 19, Issue 3, June 1990, Pages 301–309, 〕 == Metabolism == Diprenylated derivatives of piceol can be isolated from ''Ophryosporus macrodon''.〔Diprenylated derivatives of p-hydroxyacetophenone from Ophryosporus macrodon. Elizabeth Sigstad, César A.N. Catalán, Jesús G. Diaz and Werner Herz, Phytochemistry, Volume 33, Issue 1, 29 April 1993, Pages 165–169, 〕 4-Hydroxyacetophenone monooxygenase is an enzyme that transforms piceol into 4-hydroxyphenylacetic acid. This enzyme is found in ''Pseudomonas fluorescens''.
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