The main work and results are as follows :1 Selection of microorganisms and optimization of culture conditionsAn Aspergillus niger HNCO-8008 producing sucrose-fructosase was selected as the most suitable strain for FOS production from 8 strains.

• 蔗果糖酶生产菌株筛选和产酶工艺条件优化 从8支黑曲霉菌中筛选出最适于生产蔗果糖酶的黑曲霉菌HNCO-8008。