Process

Preserving diatoms during harvest with the Evodos system

September 9, 2013
AlgaeIndustryMagazine.com

Microscope picture of the harvested diatoms

Microscope picture of the harvested diatoms

Tomalgae is a Belgian company with a production and testing facility in the Netherlands where they produce high quality diatoms. For them it is extremely important that the diatoms are harvested undamaged. Only then do the high value components inside the cell wall remain available.

A unique feature of diatom cells is that they are encased within a siliceous exoskeleton (hydrated silicon dioxide) called a frustule. The frustule is very fragile. Before testing with the Evodos spiral plate centrifuge system Tomalgae had not found a harvesting method where the diatom cells could be harvested in one piece.

The harvested diatoms paste with the Evodos

The harvested diatoms paste with the Evodos

“Recently I repeatedly had a chance to process large volumes of thalassiosiroid diatoms (Diatom, taxonomic order Thalassiosirales) using the Evodos centrifuge,” says Dr. Victor Chepurnov, of Tomalgae. The results of these tests proved to be uniformly identical: the perfect quality of concentrated microalgal (diatom) paste – no diatoms cells were detected that exhibited any signs of mechanical damage.”

Evodos system at work for diatom concentration at Tomalgae

Evodos system at work for diatom concentration at Tomalgae

“The diatoms (Bacillariophyceae) belong to one of the most economically important groups of algae,” he said. “For various applications, it is often very important that while algae cultures are concentrated via centrifugation, the cells are not damaged and keep their integrity after the processing. The siliceous exoskeleton of diatom cells is extremely fragile. Traditional methods of centrifugation typically bring serious damage to the cells – breaking or opening their frustules – that usually dramatically reduces the quality (and commercial value) of the microalgal biomass obtained.”

More Like This…

HOME Algae Industry Jobs

Copyright ©2010-2013 AlgaeIndustryMagazine.com. All rights reserved. Permission granted 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.

From The A.I.M. Archives

— Refresh Page for More Choices
Natural carotenoid specialists Piveg Inc., with production facilities based in Celaya, Central Mexico, has announced immediate availability of natural astaxanthin materia...
University of Adelaide researchers are using nanotechnology and the fossils of diatoms to develop a novel chemical-free and resistance-free way of protecting stored grain...
The University of Greenwich is leading a €10m international project, called the ‘D-Factory,’ to build a biorefinery to develop the microalga Dunaliella as a sustainable r...
Biomass abounds on Earth, as forests, fields, sewage and seaweed. But only a small fraction, mostly human or agricultural waste, can be harvested without posing environme...
Algae is being discussed at the heart of EXPO Milano 2015, the international event that has existed since 1851, spawning world shaping themes and icons, such as the Eiffe...
Libourne, France-based Fermentalg, an industrial biotechnology company that specializes in the production of oils and proteins derived from microalgae, has completed a su...
“Proterro has reached its Q1 sugar-production pilot milestones,” CEO Kef Kasdin reported at the recent Advanced Biofuels Leadership Conference, in Washington, D.C. “In fo...
A series of articles by Stephen Mayfield and the UCSD Laboratory deserve recognition for their articles on algae-based medicines for malaria and cancer. Mayfield and his ...
Algenist®, Solazyme’s anti-aging skincare brand featuring microalgae, has announced its launch in Nordstrom locations throughout the United States. The launch into Nordst...
A team of six University of Calgary researchers has been awarded funding for their project, Cost Effective Biotechnology for Carbon Capture and Re-Use, based on the conce...
By sending algae into space, a U.S. Department of Agriculture (USDA) scientist and his team will be able to study some of the key mechanisms that control plant growth and...
Kazuaki Nagata reports from Japan that while the Fukushima nuclear disaster has prompted vigorous discussion about alternative energy in Japan, there is a lack of a paral...
The Guardian reports that Prince Edward Island (P.E.I.), Canada-based Solarvest has created an inventive system utilizing a specific algal strain to grow and produce EPA ...
Jamie Radford writes in the Illawarra Mercury that Pia Winberg, from the University of Wollongong, believes that the South Coast of New South Wales, Australia (NSW) is in...
Algae Industry Magazine is pleased to announce a new Algae 101 series by our popular blogger, Mark Edwards, Professor, Arizona State University. The Algae Solutions to Na...
Kyae Mone Win reports in the Myanmar Times that spirulina has been harvested from Twin Daung lake in Sagaing’s Bu Ta Lin township for over a decade, but climate change an...
Steven Mufson reports for the Washington Post that Algenol Biofuels estimates hackers have attempted to break into its computers 39 million times in four months this year...
In an effort to propel the algae industry forward, the Algae Testbed Public Private Partnership (ATP3) offers a series of hands-on specialized workshops suited for partic...