Microalgae is considered to be one of the most potential and sustainable supply of oleaginous biomass resources, but so far no industrial breakthrough has been achieved, mainly due to the high cost of large-scale oil production. Only by obtaining a high-quality, high-oil, and resistant fast-growing microalgae variety, coupled with the production of high-value products, and developing low-cost large-scale cultivation, harvesting and oil extraction processing techniques and technologies, can oil production be gradually achieved Commercialization of microalgae.
Recently, Researcher Li Welfare, the head of the microbiological resources team of the Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences, etc., through screening of microalgae resources in nature, obtained a strain of Mychonastes afer HSO-3 microalgae, whose oil content exceeds 57%, nerve Acid accounts for more than 6% of neutral lipids, and it is the first microalgae species rich in high proportion of nerve acid found internationally.
Neural acid is also known as shark acid. Its chemical name is cis-15-tetracosenoic acid. Its molecular formula is C24H48O2. It was first discovered in the nervous tissue of mammals. Nerve acid is higher in nerve tissue and brain tissue, mainly in the form of sphingolipids and sphingomyelin in the white matter of the human brain, and is an important component of biofilms. A large number of medical and pharmaceutical studies have proved that nervonic acid is a key factor for repairing nerve fibers, has the function of restoring nerve terminal activity, promoting nerve cell growth and development, and has a good effect on cardiovascular and human autoimmune deficiency diseases. Nerve acid has great development value because of its unique medical value and broad market prospects. However, with the gradual establishment of many regulations restricting the use of animal products, natural nerve acid resources have been greatly restricted, far from meeting people's health needs. Therefore, the discovery of this algae is of great significance for the development and development of the nervonic acid market. At the same time, due to the high oil content of the algae, fast growth, and strong resistance, the microalgae strain as an energy source coupled with high value-added products will have important research and development value.
Li Fuli et al. Have applied for a patent for algae species (application number .X) for the use of M. afer HSO-3-1 algae for the production of biodiesel and nervonic acid. The growth characteristics of this algae have been studied at the laboratory level (Yuan , C., JH Liu, Y. Fan, XH Ren, GR Hu, FL Li *. 2011. Mychonastes afer HSO-3-1 as a potential new source of biodiesel. Biotechnol for Biofuel 4:47), and established 500 L laboratory plate scale cultivation and technical route of nerve acid extraction process.
The research was supported by the Chinese Academy of Sciences and Shandong Provincial Department of Science and Technology.
Figure 1 Microalgae electron microscope picture
Figure 2 Microalgae cultivation in a laboratory scale 500 L flat plate photoreactor
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