Cell wall cross-linking

Phenolics, Cell-Wall Cross-Linking, and Responses to Wounding... 

Figure 2.11 The change in volumetric swelling behaviour due to (a) loss of cell wall material but not cell wall bulking agent, and (b) loss of cell wall cross-linking agent.

Cephalospodns Cell wall cross-linking Bactericidal... 

Ferulates in Lignins Cell Wall Cross-Linking in Grasses by Ferulates.190... 

S units by quantitative NMR spectroscopy (Quantitative C NMR of Lignins section) or from 2D HSQC spectra (Quantification in 2D NMR section). Other differences between GS lignins are frequently the presence of unique entities, such as incorporated hydroxycinnamates (Ferulates in Lignins Cell Wall Cross-Linking in Grasses by Ferulates section), and y-acylated units (p-Hydroxybenzoates in Various Flardwoods section) [309]. 

In reactive bulking treatments, a chemical is covalently bonded to the cell wall. Cross-linking of the cell wall material may also occur. Such treatments sometimes swell the wood and sometimes cause it to shrink. Examples of reactive bulking treatments include alkylene oxides and impregnation with thermosetting resins. These treatments are essentially nonreversible, but they often improve the stiffness of the cell walls. As a result of their nonreversibility, the conservation community is very cautious about adopting such treatments. It is, however, likely that these methods will find some utility with very deteriorated objects that cannot be satisfactorily stabilized by more traditional techniques. 

Fig. 38.16. Cell wall cross-linking and mechanism of action of 3-lactams.

Figure 22.3 The action of transpeptidase in promoting cell wall cross-linking.

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