【摘要】 用亚硫酸氢纳溶液萃取，真空蒸馏，醛氨络合，重结晶和升华等方法，分离和提纯蔗渣碱木质素碱性氧化产物紫丁香醛和香兰素。精制紫丁香醛和香兰素的纯度为99．4％和980％，其提纯得率分别为62．4％和63．3％。更多还原

【Abstract】 Syringaldehyde(S) and vanillin(V) could be sepeated from oxidized mixture of begassealkali-lignin by sodium bisulfite solution extraction distiilation, selective precipitation of sy-ringaldehyde-ammonia complex from aqueous mathanol, recrystallization, sublimation etc. Thepurity of purified S and V was 99. 4% and 98. 0%, and the yields were 62. 4% and 63. 3%respectively.更多还原