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
AIMPLAS, a Center for Innovation and Technology in Valencia, Spain, and Biofuel Systems, a wholly Spanish-owned firm that has developed a method of breeding plankton and ...
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...
Technical standards define critical terms and metrics to add wisdom for the algae industry. Agreement among science and business leaders represents possibly the most diff...
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...
As the number of photobioreactors in an algae growing operation increases, there is a need for both autonomous control and monitoring of individual PBRs, as well as centr...
Students from three Arizona universities will demonstrate their algae research projects at an Innovation Showcase May 1, in Arizona State University’s Sun Devil Fitness C...
“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...
Yereth Rosen reports in the Anchorage Daily News that scientists at North Carolina State University’s Plants for Human Health Institute have found extremely high levels o...
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 ...
Santa Fe Community College has been awarded a $50,000, SEED Infrastructure Grant from the Experimental Program to Stimulate Competitive Research (EPSCoR), for commercial ...
In Phys.Org, Yu Yonehara notes the breakthrough research from the Tokyo Institute of Technology on the connection between early marine algae and the development of terres...
The Algae Biomass Organization (ABO) released the following statement calling on the EPA to include Carbon Capture and Utilization strategies in rules proposed June 2, 20...
A new, outdoor system at the University of Dayton Research Institute has been producing a high volume of algae since its installation in the summer of 2013, even through ...
A University of New South Wales (UNSW)-led team of researchers has discovered how algae that survive in very low levels of light are able to switch on and off a weird qua...
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...
Starting in the early 70s, agencies in the former USSR invested more than 20,000 person-years of research and development to produce Bio-Algae Concentrates (BAC) that hel...