Enzyme preparation. It is mainly used in sugar industry to reduce the viscosity of sugarcane juice with increased glucan content caused by deteriorated sugarcane, so as to improve the heating speed of sugarcane juice and shorten the clarification and crystallization time. The usage can be as follows: adding 30 international units of dextranase per liter of sugarcane juice, keeping at 40ºC for 20min minutes, can decompose 68% of dextran..