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Cell wall cross-linking by ferulates and diferulates in grasses

✍ Scribed by Hatfield, Ronald D; Ralph, John; Grabber, John H

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

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✦ Synopsis

Ferulate polysaccharide esters in grasses enter into free-radical condensation reactions in the cell wall. By radical dimerisation of ferulates, polysaccharide-polysaccharide cross-linking is eþ ected. A range of diferulate isomers are produced, not solely the 5-5º-coupled dimer which has been quantiüed historically. Both ferulates and diferulates enter ligniücation reactions and become intimately bound up with the lignin complex. Again, under-quantiücation is signiücant since it is not possible to release ferulate or diferulates from some of the structures. Overall, ferulates play a signiücant role in cell wall development and impact polysaccharide utilisation in grasses.

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✍ Clive W Ford; Roy D Hartley 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 752 KB

## Abstract Cell walls from leaves and stems of three tropical grasses (__Setaria anceps__ cv Nandi (__Schumach__) Moss), pangola grass __Digitara decumbens__ Stent and spear grass __Heteropogon contortus__ (L) Beauv ex Roemer & Schultes were extracted with alkali, and ether‐soluble fractions were