Abstract
The purification of industrial alkali lignin with xylanase was investigated. Then the treated lignin was analyzed by ultraviolet (UV) and Fourier transform infrared spectroscopy (FT-IR). The structure change of lignin-carbohydrate complexes (LCC) in industrial alkali lignin was also studied. The results indicate that the content and the purity of lignin increased. And LCC can be broken by xylanase. This will make the applications and development of using lignin as reactive sites and biodegradability inducing sites more advantageously.
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