Click here for more information about Liqofluxphenometrics515R1
Visit!Readers Poll


Preserving diatoms during harvest with the Evodos system

September 9, 2013

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 A.I.M. Archives

Copyright ©2010-2017 All rights reserved. Permission required to reprint this article in its entirety. Must include copyright statement and live hyperlinks. Contact A.I.M. accepts unsolicited manuscripts for consideration, and takes no responsibility for the validity of claims made in submitted editorial.

Visit our 2017 International Reader’s Poll Platinum Sponsors

bigelow mbiolp_link sfcc

From The A.I.M. Archives

— Refresh Page for More Choices
Cheryl Katz writes in National Geographic that Iceland’s last living lake balls are disappearing. The fluffy green supersize diatoms as large as a head of cabbage are one...
For plants and algae that carry on photosynthesis, light can be too much of a good thing. On a bright, sunny day, a plant might only be able to utilize 20 percent or less...
Algae.Tec has announced that, with the completion of the US$1M injection by Gencore, their nutraceutical plant upgrade in Cummings, Georgia, is progressing ahead of sched...
Jason Smith reports for undercurrentnews that Kentucky-based Alltech is willing to invest in overseas algae production plants closer to its feed customers if demand for i...
An unprecedented harmful algal bloom off the coast of New England this fall provided a unique opportunity for Waterville, Maine-based Colby College students studying at B...
The Energy Department (DOE) has announced the selection of six projects for up to $12.9 million in federal funding, entitled, “Project Definition for Pilot- and Demonstra...