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目前,全世界有40多亿人口,每年所消耗的粮食达12亿吨之多,这等于在赤道上用粮食铺出一条16.8米宽、1.8米厚的环绕地球的公路。而人口的增长,又使这条“公路”每年要延长1000公里。这样下去,人类总有一天会因为缺粮而难以生存。为此,科学家将藻类、昆虫、细菌等列为未来食物最有希望的来源。藻类植物种类多、产量大、营养丰富。淡水藻中的小球藻,含蛋白质50%,脂肪10—30%,其营养价值相当于鸡蛋的5倍,花生仁的2倍,比小球藻大100倍的螺旋蓝藻,含蛋白质68%,是瘦猪肉
At present, there are more than 4 billion people in the world and consuming as much as 1.2 billion tons of food per year. This equates to equipping the equator with a 16.8-meter-wide and 1.8-meter-thick road that surrounds the Earth. The population growth, in turn, makes this “highway” every year extended by 1,000 km. In this way, mankind will one day find it hard to survive because of the shortage of food. To this end, scientists have algae, insects, bacteria, etc. as the most promising source of future food. Algae species, yield, nutrient-rich. Chlorella in freshwater algae contains 50% of protein and 10-30% of fat. Its nutritive value is 5 times of that of egg, 2 times of peanut kernel, more than 100 times of that of chlorella, and contains 68% Is lean pork