摘要
基于酶工程原理,通过组合自然界存在的酶促生化反应,提出自然界不存在的人工光合作用暗反应途径,只需要使用H2或电再生NADH驱动转化CO2为糖或淀粉,避开了人工光合磷酸化再生ATP难题,而且理论效率高.这种使用能源人工合成糖的方法,也是粮食生产工业化的一种潜在方法,如果将其与太阳能光伏技术或产氢技术结合,就可以实现人工光合作用,利用太阳能将CO2转换为糖。
The overall process of photosynthesis consists of two main phases,the so-called light and dark reactions,in which light energy is absorbed by chlorophyll molecules and transferred to regenerate NADH and ATP,then drive Calvin-Benson cycle to synthesize sugar.Due to the difficulty in artificial regeneration of ATP,artifical dark reaction pathways were thus proposed,which are based on the natural biochemical reactions catalyzed by enzymes,with which only NADH is needed to be regenerated from hydrogen or electricity for driving the dark reactions.ATP is thus not needed to be regenerated from photophosphorylation and the theoretical efficiency is improved.This provides an artificial sugar synthesis method from energy and CO2,and may be a potential industrial process to produce sugar with energy.The solar energy may be used to convert CO2 artificially to sugar if the pathway and photovoltic or solar hydrogen technology is combined.
基金
国家留学基金委基金(2008401951)
安徽省科技攻关计划基金(07010302166)资助
关键词
人工光合作用
暗反应
CO2固定
糖合成
artificial photosynthesis
dark reaction
CO2 fixation
synthesis of sugar
