Phenolic Acids in Wheat Coleoptile Cell Walls | Zendy

F. W. Whitmore | Zendy

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Phenolic Acids in Wheat Coleoptile Cell Walls

Author(s) -

F. W. Whitmore

Publication year - 1974

Publication title -

plant physiology

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.53.5.728

Subject(s) - coleoptile , ferulic acid , vanillin , chemistry , cell wall , syringaldehyde , lignin , arabinose , pentose , xylose , pronase , polysaccharide , cellulase , biochemistry , arabinoxylan , carbohydrate , xylanase , food science , organic chemistry , cellulose , enzyme , fermentation , trypsin

The phenolic constituent of nonvascular cell walls of wheat (Triticum aestivum L.) coleoptiles, which yields vanillin upon nitrobenzene oxidation, is not lignin as I previously claimed. It seems to be mainly ferulic acid bonded to carbohydrate, probably by an ester linkage. The acid is associated with a fraction of the wall rich in arabinose and xylose, although it is not known whether it is esterified directly with these pentose residues. The phenolic-carbohydrate complex is released by cellulase, but not by pronase or a mixture of hemicellulases.

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