Fungal demethylation of Kraft lignin.

Demethylation of industrial lignin has been for long coveted as a pathway to the production of an abundant natural substitute for fossil-oil derived phenol. In an attempt to possibly identify a novel Kraft lignin-demethylating enzyme, we surveyed a collection of fungi by using selected ion flow tube-mass spectrometry (SIFT-MS). This method readily identifies methanol resulting from lignin demethylation activity.

[Effects of nitrogenous phosphorus and potassium fertilizer on yield of Bupleurum scorzonerifolium].

Objective: To study the effect of different fertilizer assortment (nitrogenous, phosphorus and potassium) on Bupleuram scorzonerifolium yield.

Methods: Three factors were designed by quadratic regression and D-optimum designation.

Results: As far as the biomass concerned, the best design of fertilizer was N 120.