(b) Enzymes facilitating pulp bleaching. Lignolytic enzymes-and xylanases are two its of important enzymes which reduce lignin content in pulp and thus, if used for pulping, help in pulp bleaching. While lignolytic enzymes degrade lignin, xylanases attack lignin-xylan complexes commonly found in hardwoods.

Xylanases attack xylans and remove it thus making it easier to remove lignin. It is believed that xylanases will prove extremely useful in pulp bleaching in future.

(c) Trees easier to pulp and bleach. In future, with better understanding of lignin biosynthesis and deposition one may be able to obtain forest trees with
(i) lower lignin content,
(ii) lignins of modified methoxyl content or
(iii) reduced association between lignin and the hemicelluloses. These superior trees will be obtained using genetic engineering and tissue culture techniques and should prove useful, for paper industry.