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
Scientists at the Energy Department’s National Renewable Energy Laboratory (NREL) have demonstrated that just two of six iron-sulfur-containing ferredoxins in a represent...
Algae.Tec Ltd has received its first purchase order from Reliance Industrial Investments and Holdings Limited (RIIHL), in connection with the arrangements announced on Ja...
One of 12 winners of the 2014 Lexus Design Award, the Ooho algae balloon was created by three London-based designers to contribute a solution to the rising number of plas...
Libourne, France-based Fermentalg, an industrial biotechnology company that specializes in the production of oils and proteins derived from microalgae, has completed a su...
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...
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...
Algenist®, Solazyme’s anti-aging skincare brand featuring microalgae, has announced its launch in Nordstrom locations throughout the United States. The launch into Nordst...
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...
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 ...
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...
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...
Following a request from the European Commission, the European Food Safety Authority (EFSA) Panel on Dietetic Products, Nutrition and Allergies (NDA) was recently asked t...
Bookending the upcoming Algae Biomass Summit, Sept. 29-Oct.2 in San Diego, will be industry tours to give attendees a first-hand look at the latest progress in technical ...
Using a combination of satellite imagery and laboratory experiments, researchers have evidence showing that viruses infecting those algae are driving the life-and-death d...
Expanding from its initial work in algal biofuels, General Atomic’s (GA’s) Advanced Biological Processes team has focused on the rising need for food globally, specifical...
Oregon State University researchers are combining diatoms, a type of single-celled photosynthetic algae, with nanoparticles to create a sensor capable of detecting minisc...
Portuguese cement facility, Secil, and microalgae biotechnology company, A4F, also based in Portugal, have formed AlgaFarm, a joint venture to develop the use of cement f...
With their new CO₂ processing-platform called AstaCos, AlgaeBiotech can produce waxy particles of only 50-100 µm in size with a loading of 25% astaxanthin oleoresin. The ...