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乙烯是世界上需求最大的化工原料,随着石油资源的日益枯竭和原油价格的不断攀升,生物乙烯迎来了重大发展机遇。文中主要比较两条生物乙烯合成途径——生物乙醇脱水制备乙烯途径(即间接途径)和生物乙烯的直接合成途径,重点论述了直接合成途径和途径中关键酶的性质、利用微生物直接合成生物乙烯的基因工程策略、工程化制造生物乙烯的前景及成功事例,并指出直接合成生物乙烯替代石化乙烯具有较大的市场潜力。
Ethylene is the world’s largest demand for chemical raw materials, with the depletion of oil resources and rising crude oil prices, bio-ethylene ushered in major opportunities for development. In this paper, we mainly compare the two biosynthetic pathway of ethylene - the direct route of bioethanol dehydration to ethylene production (indirect pathway) and bio-ethylene. The direct synthesis pathways and key enzymes in direct pathway are discussed. The direct synthesis of bio-ethylene Genetic engineering strategy, the prospect of engineering bio-ethylene production and success stories, and pointed out that the direct synthesis of bio-ethylene instead of petrochemical ethylene has greater market potential.