黄孢原毛平革菌对美洲黑杨的生物制浆研究

Biomechanical Pulping of Populus Nigra Chips With Phanerochaete Chrysosporium

以短周期工业材美洲黑杨为原料 ,选用黄孢原毛平革菌PhanerochaetechrysosporiumME44 6及其木素过氧化物酶缺陷株LIP - 14进行了一系列生物制浆实验。原始菌株P .C .ME45 6预处理后节约磨浆能耗 38% ,LIP - 14节约磨浆能耗 2 4.5 %。突变株LIP - 14在提高纸张物理强度方面明显优越于原始菌株 ,其中对裂断长的提高比P .C .ME44 6高出 2 6 % ,耐破度的提高比P .C .ME44 6高出 2 0 % ,撕裂度的提高则比P .C .ME44 6高出 47%。LIP - 14预处理后大大改善了生物机械浆的质量 ,是适合于美洲黑杨生物制浆的优良菌株。

Biomechanical pulping of populus nigra chips with Phanerochaete chrysosporium ME446 and its LiP_negative mutant LIP-14 showed that pretreatment with P.C.ME446 could save energy by 38%,while pretreatment with LIP-14 could save energy by 24.5%.LIP-14 had better effect on improving physical properties of the handsheets than the wild type P.C.ME446.LIP-14 could improve breaking length by 26% more than P.C.ME446,improve burst index by 20% more than P.C.ME446,and improve tear index by 47% more than P.C.ME446.