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The role of hydroxycinnamates in the plant cell wall

✍ Scribed by Faulds, Craig B; Williamson, Gary

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
82 KB
Volume
79
Category
Article
ISSN
0022-5142

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✦ Synopsis

HYDROXYCINNAMIC ACIDS

Hydroxycinnamic acids, such as ferulic, sinapic, caΓΎeic and p-coumaric acid, are found both covalently attached to the plant cell wall and as soluble forms in the cytoplasm. Esters and amides are the most frequently reported types of conjugates, whereas glycosides rarely occur. Ferulic acid is the most abundant member of this class of phytochemicals. Other names for ferulic acid include (3-methoxy-4-hydroxy)-3phenyl-2-propenoic acid, 3-methoxy-4-hydroxycinnamic acid, caΓΎeic acid 3-methyl ester, and coniferic acid. The isomeric form, 3-hydroxy-4methoxycinnamate (isoferulate) is also found in plants. Hydroxycinnamates and their derivatives exist in Z (cis) and E (trans) forms, with strong evidence that the natural forms are all trans. Isomerisation occurs during extraction, as these compounds are light sensitive.

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