Mellein is a dihydroisocoumarin, a phenolic compound produced by the mold species Aspergillus ochraceus.
Derivatives 4-Hydroxymellein is also produced by Aspergillus ochraceus.
6-Hydroxymellein, together with S-adenosyl methionine, is a substrate of the enzyme 6-hydroxymellein O-methyltransferase to form 6-methoxymellein and S-adenosylhomocysteine in Apiaceae.6-methoxymellein biosynthesis pathway on www.biocyc.org 6-Methoxymellein is one of the compounds responsible for bitterness in carrots.
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