A sugar mixture containing 55% fructo oligosaccharides (FOS) could be produced with a fructosyltransferase (FTS) which was extracted from Aspergillus niger AS0023.

• 将黑曲霉AS0023生产的果糖转移酶作用于底物蔗糖,可制备含量为55%25的低聚果糖,但该产品中亦含有30%25的副产物葡萄糖。