一、鲜果防腐保鲜的必要性鲜果营养丰富,外观美丽,风味鲜美。不仅供给人体所需的热能和各种维生素,调节人体正常生理机能,而且促进食欲,帮助消化,成为人民生活中不可缺少的食物之一。但是,鲜果含水量为73—90%,易凋萎,组织脆弱,易创伤;采收后生命活动仍继续进行,产生一系列生理生化变化,加上果柄脱落处和损伤口易被腐烂病菌侵染,使鲜果 First, the necessity of preservation of fresh fruits Fresh fruits are nutritious, beautiful appearance, delicious flavor. It not only supplies the heat energy and various vitamins needed by the human body, but also regulates the normal physiological functions of the human body, promotes appetite and helps digestion, and becomes an indispensable food for people’s life. However, the fresh fruit has a water content of 73-90% and is easily wilted. The tissue is fragile and easy to be traumatic. After the harvesting, the life activities are still going on, resulting in a series of physiological and biochemical changes. Coupled with the shedding of the stalk and the damaged wound, Infected so fresh fruit