一、前言啤酒是一种深受人们欢迎的饮料。啤酒的酿造,在欧洲拥有悠久的历史。目前美国年产啤洒达2303万吨,居世界之冠。人均消费量,西德最多,平均每人每年消耗148升啤酒。我国啤酒生产始于本世纪初,“六五”期间,生产发展迅速,据不完全的统计,全国约有500多个大、中、小啤酒厂,1985年 I. Introduction Beer is a popular beverage. Beer brewing, has a long history in Europe. At present, the annual output of beer in the United States reaches 23.03 million tons, ranking the highest in the world. Per capita consumption, up to West Germany, consumes an average of 148 liters of beer per person per year. China’s beer production started at the beginning of this century. During the period of “the Sixth Five-Year Plan”, the production has developed rapidly. According to incomplete statistics, there are about 500 large, medium and small breweries across the country in 1985