Pulping and bleaching of CAD-deficient wood
Dimmel DR., MacKay JJ., Althen EM., Parks C., Sederoff RR.
Direct breeding was used to obtain mutant loblolly pine trees, deficient in enzyme cinnamyl alcohol dehydrogenase (CAD). High levels of pulping-resistant C-5 linkages resulted from the lignin in the wood of CAD deficient trees with different pool of precursors. Results showed that the CAD-deficient wood was easily delignifined as compared to a normal 12-year-old loblolly pine. It was easy to bleach the pulp, from CAD-deficient wood. Lignin size and phenolic content were found to be related to the high reactivity of CAD-deficient wood.