Biomass-to-biodiesel technology has made new progress

Recently, the "Biomass to Biodiesel" technology of the Biomass Efficient Conversion Research Group of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences has made significant progress, and its results were published in "Nature. Communication" (Nat. Commun. XX: XXXX, DOI: 10.1038 / ncom ms2112).

Converting abundant biomass resources into high-value, green and renewable biofuels and chemicals is one of the ways to solve the increasingly serious problems of energy and resource depletion, environmental pollution and climate change. Researcher Zhao Zongbao of Dalian Institute of Chemical Research and his team have been researching new technologies for "biomass-made biodiesel" since 2004. This technology uses oleaginous yeast to convert renewable resources such as crop straws and forestry wastes into oil,

Fundamentally solve the raw material problem of biodiesel. Moreover, this technology can also provide new raw materials for the oleochemical industry to partially replace soybean oil, rapeseed oil, etc., thereby saving valuable cultivated land resources. It is understood that oleaginous yeast has the same biological safety as Saccharomyces cerevisiae and can be reused as feed after oil extraction. At present, this research is supported by the Ministry of Science and Technology, the National Natural Science Foundation of China, the Chinese Academy of Sciences and the Dalian Institute of Chemical Physics.

Researcher Zhao Zongbao, the head of the research group, told reporters: "Biodiesel made from biomass is technically feasible. The current bottleneck restricting the large-scale application of this technology is the high cost. It is preliminary estimated that the price of biodiesel produced using corn stalks is lower than the market diesel. It is nearly twice as high. Therefore, our research focus is on how to improve the comprehensive performance of oleaginous yeast. Recently, we have performed whole genome sequencing of Rhodosporidium rubrum with outstanding oil-producing ability and found it using advanced omics technology. More than 2,000 genes or proteins that affect oil-producing traits. The next step will be to use this information to design and modify oil-producing yeast. It is hoped that by adding genes that can improve their performance and remove unfavorable genes, a variety of oil-producing yeast advantages will be developed. All in one 'engineering yeast'. "

It is understood that "engineering yeast" will be able to use more extensive raw materials, and take into account high-value products, thereby significantly reducing costs. By then, biodiesel will be expected to be marketed on a large scale.

Researcher Zhao Zongbao told reporters: "Because our annotated oleaginous yeast genome contains very rich biological information and high credibility, it will provide an important foundation for domestic and foreign counterparts engaged in advanced biofuel and synthetic biology research. This will be Our dedication to the entire field of energy biotechnology. "

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