| abstract |
The invention discloses a mixed neutral cellulase, and belongs to the field of enzymatic preparations. The mixed neutral cellulase comprises, in parts by weight, 10-40 parts of cellulase, 20-30 parts of acidic xylanase, 5-10 parts of pectase, 3-8 parts of mannanase and 2-8 parts of a Chinese herbal medicine powder. According to the prepared mixed neutral cellulase, the active components of the Chinese herbal medicine powder is effectively utilized, a special method is utilized to overcome the disadvantage that conventional acidic xylanase is fermented by employing a single bacterial strain; compared with unprocessed pulp, beat pulp processed by the mixed neutral cellulase is improved in beating degree by 11.76%, improved in short fiber burst index by 11.98% and improved in ring crush index by 13.99%; the beat pulp processed by the mixed neutral cellulase is improved in long fiber pulling force index by 40.17% and improved in tear index by 58.91%; the beat pulp processed by the mixed neutral cellulase has relatively smooth fiber surface and relatively soft enzyme fiber; paper made from the beat pulp processed by the mixed neutral cellulase is improved in tear index by 8.3%, improved in tensile index by 10.6% and improved in burst index by 16.5%; and paper pulp whiteness is improved by 2%-5%, sewage quality is substantially improved, and environmental pollution degree is reduced. |