让食物永不变质,或许正如同让女人永远年轻一样没有可能。不过,就像女人永远追求年轻一样,如何让食品不变质,也是科研人员一直追求的目标。如今,科研人员正在实验多种食品保鲜新技术,寻找让食品“长寿”的秘诀。也许在这个过程中,备受诟病的化学防腐剂,会逐渐消失在历史的长河中。出于战时特殊需求,军用食品以保质期长而著称,但提到口味,却通常让人摇头。不过,这种情况近年来得到改善。美国国家航空航天局最近宣布研制出一种保质期4年的面包布丁。五角大楼则研制出一种松糕,不仅保质期长达5年,口感更可以保持松软,同时他们还希望开发出3年内保持爽脆口感的超高压灭菌水果,让在前线作战的士兵不必再食用罐头水果。其实,早在2002年,美国国防部作战部队就曾尝试改 Food will never deteriorate, just as it may be as if a woman should always be young. However, just as women are always looking for young people, how to make food without spoiling is also the goal that researchers have been pursuing. Now, researchers are experimenting with a variety of food preservation technology, looking for the food “longevity ” secret. Perhaps in this process, much criticized chemical preservatives, will gradually disappear in the long history. Due to the special needs of wartime, military food products are known for their long shelf-life, but mentioning the taste usually shook their heads. However, this situation has improved in recent years. NASA recently announced the development of a four-year loaf of bread. The Pentagon has developed a sponge cake that not only retains a shelf life of up to five years, but also retains its soft texture. At the same time, they hope to develop an autoclaved fruit that retains crisp taste within three years, eliminating the need for soldiers fighting on the front lines Canned fruits. In fact, as early as 2002, the U.S. Defense Department combat units tried to change it