The isolation of lignin by different approaches such as acid, alkali, supercritical extraction, aqueous biphasic system, mild hydrogena-tion and ionic liquid extraction are reviewed.

• 综述现有使用酸、碱、超临界、两水相、缓和氢解、离子液等手段分离木质素的方法,指出现有分离技术的发展方向与趋势。