据日本的《石油技术》杂志１９９９年１月号报道，近年来国外盛行在柴油中调入植物油（简称生物柴油，Ｂｉｏ－ｄｉｅｓｅｌ），以适应日益严格的环保要求。西欧各国主要加入菜籽油和蓖麻油，美国为大豆油。植物油经专门的化工厂（或炼油厂）乙酯化后，调入量可达２０％。植物 According to Japan’s “Petroleum Technology” magazine in January 1999 reported that in recent years abroad, the introduction of diesel in the popular vegetable oil (referred to as biodiesel, Bio-diesel) to meet the increasingly stringent environmental requirements. Western European countries mainly join rapeseed oil and castor oil, the United States for soybean oil. Vegetable oil by a specialized chemical plant (or refinery) after ethyl esterification, transfer amount up to 20%. plant