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Food does not need land to grow, and can be manufactured in the production workshop
.
Now, this seemingly fantastic imagination is becoming possible
In the laboratory of Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, researchers showed samples of synthetic starch
.
.
On September 23, the Chinese Academy of Sciences held a press conference to announce that the Tianjin Institute of Industrial Biotechnology of the Chinese Academy of Sciences has made breakthroughs in the artificial synthesis of starch, and achieved the de novo synthesis of carbon dioxide into starch for the first time in the world
.
Related results were published online by the internationally renowned academic journal "Science" on the 24th Beijing time
At present, starch is mainly produced by corn and other crops through natural photosynthesis to fix carbon dioxide.
Synthesis and accumulation involve about 60 steps of metabolic reactions and complex physiological regulation, and the theoretical energy conversion efficiency is only about 2%
.
Crop planting usually takes a long period of time, and uses a large amount of land, fresh water and other resources, as well as fertilizers, pesticides and other agricultural production materials
The research team of Tianjin Institute of Science and Technology of the Chinese Academy of Sciences, using a method similar to "building blocks", designed from scratch a new way of unnatural carbon dioxide fixation and artificial starch synthesis with an 11-step main reaction.
The total synthesis
.
Nuclear magnetic resonance and other tests have found that the structural composition of synthetic starch molecules is consistent with that of natural starch molecules
The Tianjin Institute of Technology and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, used chemical catalysts to reduce high-concentration carbon dioxide to carbon-compounds under the action of high-density hydrogen energy.
One compound is polymerized into carbon three compounds, and finally through biological optimization, the carbon three compounds are polymerized into carbon six compounds, and then straight chain and amylopectin are further synthesized
.
Preliminary laboratory tests show that the efficiency of synthetic starch is about 8.
5 times that of traditional agricultural starch
.
According to current technical parameters, under the condition of sufficient energy supply, the theoretical annual starch output of a 1 cubic meter bioreactor is equivalent to the average annual starch output of corn planted on 5 acres of land
Related achievements make it possible to transform the traditional agricultural planting mode of starch production to the production mode of industrial workshop, and provide a new technical route for the synthesis of complex molecules from carbon dioxide raw materials
.
If the cost of the system process can be reduced to be economically feasible compared with agricultural planting in the future, it will be possible to save more than 90% of arable land and freshwater resources, while reducing the impact of pesticides and fertilizers on the environment
Synthesize starch from carbon dioxide by artificial means
Synthesize starch from carbon dioxide by artificial means Internationally renowned experts such as Manfred Reitz, academician of the German Academy of Sciences and Jens Nielsen, academician of the American Academy of Engineering, all spoke highly of this achievement, believing that this major breakthrough has advanced the research in this field a big step forward
.
According to the Chinese Academy of Sciences, the results are still in the laboratory stage, and there is still a long way to go before practical applications.
In the future, it is necessary to realize the conversion from the concept of "0 to 1" to "1 to 10" and "10 to 100" as soon as possible.
.
The Chinese Academy of Sciences will integrate relevant scientific and technological forces and continue to support the in-depth advancement of this research
