Click here for more information about Algenuity
Click here for more information about Liqofluxphenometrics515R1
Visit cricatalyst.com!Evodos Separation Technology

Research

Increasing oil production from algae

April 19, 2017
AlgaeIndustryMagazine.com

Figure 1: Comparison of lipid production with previous studies (click image to enlarge). Credit: Kobe University

PhysOrg reports that the mechanism behind oil synthesis within microalgae cells has been revealed by a Japanese research team. This discovery could contribute to the development of biofuels. The findings were published on April 4 in Scientific Reports.

The research was carried out by a group led by Professor Hasunuma Tomohisa and Academic Researcher KATO Yuichi, both from the Kobe University Graduate School of Science, Technology and Innovation.

Many species of algae are capable of producing large amounts of oil (lipids), but this is the first time that researchers have captured the metabolic changes occurring on a molecular level when lipids are produced in algae cells.

Figure 2: Differences in cell contents based on presence of saltwater (click to enlarge). Credit: Kobe University

Focusing on marine microalgae, Professor Hasunuma’s group found that Chlamydomonas sp. JSC4, a new species of green alga harvested from brackish water, combines a high growth rate with high levels of lipids. The research team developed an analysis method called “dynamic metabolic profiling” and used this to analyze JSC4 and discover how this species produces oil within its cells.

Professor Hasunuma’s team incubated JSC4 with carbon dioxide as the sole carbon source. Four days after the start of incubation, over 55% of cell weight consisted of carbohydrates (mainly starch). When saltwater comprised 1-2% of the incubation liquid, the team saw a decrease in carbohydrates and increase in oil, and seven days after the start of incubation over 45% of cell weight had become oil.

JSC4 has a high cell growth rate, and the lipid production rate in the culture solution achieved a speed that greatly surpassed previous experiments. At the start of the cultivation period starch particles were observed in the cells, but in saltwater these particles vanish and numerous oil droplets are seen (figure 1).

Using dynamic metabolic profiling, the group found that the sugar biosynthesis pathway (activated when starch is produced) slows down, and the pathway is activated for synthesizing triacylglycerol, a constituent element of oil. In other words, the addition of seawater switched the pathway from starch to oil production. They also clarified that the activation of an enzyme that breaks down starch is increased in saltwater solution.

The discovery of this metabolic mechanism is not only an important biological finding, it could also be used to increase the production of biofuel by improving methods of algae cultivation. Based on these findings, the team will continue looking for ways to increase sustainable oil production by developing more efficient cultivation methods and through genetic engineering.

Read More

More Like This…

Copyright ©2010-2018 AlgaeIndustryMagazine.com. All rights reserved. Permission required to reprint this article in its entirety. Must include copyright statement and live hyperlinks. Contact editorial@algaeindustrymagazine.com. A.I.M. accepts unsolicited manuscripts for consideration, and takes no responsibility for the validity of claims made in submitted editorial.

twittertopbarlinks_eventstopbarlinks_requesttopbarlinks_archives

From The A.I.M. Archives

— Refresh Page for More Choices
Algatech has announced the opening of Algatech Inc., a New York City-based subsidiary created to serve the North American market. The company has appointed Ken Seguine to...
ExxonMobil and Synthetic Genomics Inc. have announced that, in joint research into advanced biofuels, they have modified an algal strain to more than double its oil conte...
The recent announcement by the U.S. Department of Energy (DOE) of three projects to receive up to $8 million, aimed at reducing the costs of producing algal biofuels and ...
Washington State University researchers have developed a biofilm reactor to grow algae more efficiently, and make the algae more viable for several industries, including ...
Memory Maninga reports for Zambia Daily Mail that in Mansa, the capital of the Luapula Province of Zambia, spirulina is being grown in ponds in the communities because of...
Adoption of advanced technologies in various stages of natural astaxanthin production, such as microalgae harvesting, cultivation, extraction, and drying, have been major...
Researchers at ETH Zurich, Empa and the Norwegian research institute SINTEF are pursuing a new approach to treating arthritis. This is based on a polysaccharide, a long-c...
Portuguese microalgae producer, Allmicroalgae Natural Products S.A., has recently begun production of Chlorella vulgaris and other microalgae species via fermentation, wh...
Jeff Gelsky writes in Meat+Poultry that Corbion executives have given insights on how its September 29 acquisition of TerraVia Holdings Inc., an algae-based ingredients c...
Cyanotech Corporation a leader in microalgae-based, high-value nutrition and health products, announced financial results for the third quarter and first nine months of f...
The recently signed US two-year budget deal – featuring bipartisan support for a $35 per ton tax incentive for carbon captured and recycled from power plants or industria...
JapanNews.com reports that Euglena Co., a Tokyo-based maker of nutritional supplements, is spending ¥5.8 billion ($5.3 million USD) on building a test refinery that conve...