摘要
分别利用来自Candidalipolytica、Candidacylindracea和猪胰的脂肪酶对马尾松磨木浆进行了生物处理。Vibromixer沉积实验表明，马尾松磨木浆经脂肪酶处理后树脂的沉积量明显减少。来自于Candidalipolyti-ca的脂肪酶对马尾松磨木浆进行生物控制的最佳条件是：脂肪酶用量5u／g，pH7．0、温度40℃、反应2h。在此条件下，马尾松磨木浆树脂的RN值由初始的23．8％下降到17．8％，甘油三酸酯等酯类物质的分解率达83％。论文提出的RN值是评价脂肪酶生物控制效果的有效方法。
The biological pitch control of Pinus Masson Lamb groundwood pulp was studied. Three different lipase isolated from Candida lipolytica, Candida cylindracea and Pancreas respectively were beingused. Vibromixer deposition tests revealed that with Candida lipolytica, favorable conditions were as follows:lipase charge 5 u/g pulp, temperature 40℃,time 2h, pH7. 0. Under such conditions, the RN value (i. e. theratio of neutrals to the sum of neutrals plus weak acids)dropped from 23. 8% to 17. 8%, while 83% of theglycerides were being hydrolyzed. It has been found that the RN value was an effective measurement for the e-valuation of lipase pitch control.
出处
《中国造纸学报》
CAS
CSCD
北大核心
1997年第B12期29-34,共6页
Transactions of China Pulp and Paper
