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...
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...
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.Tec Ltd has received its first purchase order from Reliance Industrial Investments and Holdings Limited (RIIHL), in connection with the arrangements announced on Ja...
Solazyme, Inc. has announced results for the fourth quarter and full year ended December 31, 2013. “2013 was a year of great progress for Solazyme as we readied our first...
Valensa International and Contract Biotics have announced that Contract Biotics has started construction of an additional six acres of algae production units at the compa...
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...
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...
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...
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...
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...
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...
Gilbert, AZ-based Heliae has announced a partnership with Sincere Corporation, a Japanese waste management and recycling company, to form a joint venture and develop a co...
Algae manufacturer Cyanotech Corporation has announced implementing three major initiatives to improve Astaxanthin production at their Kailua Kona, Hawaii-based cultivati...
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...
A recent discovery in the multicellular green alga, Volvox carteri,has revealed the origin of male and female sexes, showing how they evolved from a more primitive mating...
Perth, Western Australia-based Algae.Tec Limited has announced that the Reliance Group has converted the first tranche of options following the positive progress achieved...