摘要
探讨了不同的漆酶/介体处理对未漂硫酸盐浆白度和色度的影响,着重研究了单独漆酶和以丁香酸甲酯(MS)为介体的漆酶/介体体系对白度和色度的影响。结果表明:不同的漆酶/介体体系,均未改善纸浆的白度。单独漆酶处理可导致纸浆白度和L*值稍有降低,a*值稍有增加,b*值下降。漆酶/MS处理造成纸浆白度和L*值下降更为明显,a*值大幅上升,b*值下降。纸页的白度随漆酶用量的增加稍有下降;不同的处理温度对纸浆白度和色度影响不大;增加介体MS用量导致纸页的白度和L*值进一步下降,a*值明显增加,b*值变化不大。
The impact of different laccase/mediator treatment on the whiteness of unbleached kraft pulp was studied, and emphasis was put on the effect of laccase alone and laccase/methyl syfingate（L/MS）treatment on the whiteness and chromaticity of unbleached kraft pulp. It was found that laccase with different mediator treatments all didn＇ t improve whiteness of the pulp. Laccase alone treatment caused whiteness and L^＊ value of the pulp decrease, a tittle increase of a^＊（redness） and decrease of b^＊ （yellowness）. Laccase/MS treatment further decreased whiteness and L^＊ , and there was substantial increase in a^＊ value and a decrease in b^＊ value compared with the control sample. The whiteness of the pulp decreased slightly with increased dosage of laccase. Different treatment temperature had a little effect on the whiteness and chromaticity of the pulp. Increase in MS charge caused comidemble decrease in whiteness, noticeable increase in redness and a little change of yellowness.
出处
《中国造纸学报》
CAS
CSCD
2006年第3期23-26,共4页
Transactions of China Pulp and Paper
基金
国家自然科学基金(30471359)
天津市高等学校科技发展基金(20031303)
天津科技大学重点基金(20040108)
制浆造纸工程国家重点实验室(华南理工大学)(200407)资助课题
关键词
漆酶
丁香酸甲酯
白度
色度
laccase
methyl syringate
whiteness
chromaticity
作者简介
刘娜,女;在读博士研究生;主要研究方向为生物技术在制浆造纸中的应用.
通讯联系人：石淑兰,E-mail：shishulan@sohu.com
