Welcome to FIS   Sponsored By
United States
Subscribe to FIS | Register with FIS | Advertise with FIS | Newsletter | About FIS | Contact us
   


The team of scientists of University of Almeria. (Photo: Universidad de Almería)

Marine microalgae biomass production boosted for aquaculture feed

Click on the flag for more information about Spain SPAIN
Tuesday, July 16, 2013, 04:20 (GMT + 9)

A team of scientists from the Group of Marine Microalgae Biotechnology of the University of Almería (UA) developed a process to obtain microalgae that increased biomass production that is rich in polyunsaturated fat for aquaculture species.

According to the researchers involved in the study, published in the journal Bioresource Technology and entitled Medium recycling for Nannochloropsis gaditana cultures for aquaculture, the process is cheaper and environmentally friendly.

The scientists selected the alga Nannochloropsis gaditana because it is a good producer of valuable fatty acids and proteins for aquaculture

According to Maria del Carmen Ceron, responsible for the research, this alga contains "omega 3 and omega 6 acids, EPA and DHA, two beneficial fatty acids that are incorporated to the fish fat and, in turn, become part of the human diet."

As part of this initiative bioreactors incorporating improvements to optimize the biomass production process were developed by incorporating fertilizers and the reuse of the farming medium, stated the expert to Fundación Descubre.

After the addition of fertilizers, the scientists incorporated essential nutrients -- nitrogen and phosphorus -- and micro-nutrients to the water where the microalgae need them to grow.

This formula lowers the cost and keeps the same composition of nutrients needed by the microorganisms.

Furthermore, in order to reduce costs and avoid contamination, UA researchers reuse this water by previously sterilizing it in order to avoid the accumulation of unwanted microorganisms.

The expert panel found that the most effective technique is the ozonation, that is to say, the addition of ozone.

"This method reduces the bacterial load to values that are 1,000 times smaller than they are with other techniques such as initial filtering, chlorination, the addition of hydrogen peroxide or heating," explained Cerón.

"Our technologies favour the production of microorganisms so that all cells of microalgae grow in the most effective way and the quality of the biomass that is intended to aquaculture is boosted," the scientist added.

Finally, UA researchers also participated in the study Process for the biodiesel production involving the Chlorella protothecoides heterotrophic fermentation with glycerol as carbon source, in order to obtain biodiesel.

The novelty of this research is the use of glycerol as an organic substrate.

Ceron stressed that "there has been very high biomass yields and biodiesel productivities equivalent to those reported for the same species but using glucose as carbon source."
 

By Analia Murias
editorial@fis.com
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Japan
Jul 25, 05:00 (GMT + 9):
IN BRIEF - Tainted Vietnam fish packages emerge in Yamaguchi
United States
Jul 25, 05:00 (GMT + 9):
IN BRIEF - Fish Factor: Red salmon prices hinge on Fraser River
United States
Jul 25, 05:00 (GMT + 9):
IN BRIEF - UWM will do study on water system for fish hatchery
United States
Jul 25, 05:00 (GMT + 9):
IN BRIEF - Seafood Harvesters Applauds Senate Action In Support of America’s Commercial Fishing Fleet
New Zealand
Jul 25, 04:40 (GMT + 9):
IN BRIEF - Steve Yung appointed as new Sealord CEO
Iceland
Jul 25, 04:40 (GMT + 9):
IN BRIEF - Marel hf. - Marel Q2 2014 Results
United Kingdom
Jul 25, 04:40 (GMT + 9):
IN BRIEF - Fishing industry sends message to Cameron over discards
Australia
Jul 25, 04:30 (GMT + 9):
IN BRIEF - Salmon producer Tassal given almost AUD 4 million for fish by-product factory near Triabunna
Australia
Jul 25, 04:30 (GMT + 9):
IN BRIEF - Aquaculture report recommends regulatory reform
New Zealand
Jul 25, 04:30 (GMT + 9):
IN BRIEF - Antarctic fish should survive global warming - research
Japan
Jul 25, 04:30 (GMT + 9):
EN BREVE - Eel farmers face state regulation to manage new extinction risk
Canada
Jul 25, 04:30 (GMT + 9):
IN BRIEF - Gail Shea would 'look at all the options' on food fishery
United Kingdom
Jul 25, 04:10 (GMT + 9):
Thirty new MPAs designated to protect Scotland's seas
Argentina
Jul 25, 03:40 (GMT + 9):
Alpesca fishing quota transfer assessed
United Kingdom
Jul 25, 03:10 (GMT + 9):
IN BRIEF - Scottish fishermen play key role in Marine Protected Area designation



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Codex once again discusses biotoxin standards in bivalve molluscs
Chile The Chilean government managed to have the proposed performance criteria for identification methods of marine biotoxins in live and raw bivalve molluscs once again discussed at the general meeting of the Codex Alimentarius, held in Geneva, Switzerland.
Genetically improved tilapia delivered to Ivory Coast
Brazil A shipment of genetically improved tilapia was delivered this week to the Government of Ivory Coast by the head of the Ministry of Fisheries and Aquaculture from Brazil continuing a relation that started more than four decades ago.
IATTC fails to improve tuna and shark conservation
European Union The European Commission has expressed its disappointment with the outcomes of the 87th Annual meeting of the Inter American Tropical Tuna Commission, which finished on 18 July in Lima, Peru.
EPA intends to protect salmon fisheries from Pebble Mine
United States The US Environmental Protection Agency proposes restrictions on a massive gold-and-copper prospect development near the headwaters of the world’s most valuable salmon fisheries, in Bristol Bay, Alaska.
 
Maruha Nichiro Corporation
Nichirei Corporation -Headquarter-
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation -Wartsila Group Headquarter-
ITOCHU Corporation -Headquarter-
BAADER - Nordischer Maschinenbau Rud. Baader GmbH (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Pescanova, S.A. - Group Headquarters
Sea Harvest Corporation (PTY) Ltd.
I&J - Irvin & Johnson Limited
Blue Continent Products (Pty) Ltd - (Oceana Group Limited)
Pesquera San Jose S.A.
Nutreco N.V. - Head Office
CNFC China National Fisheries Corporation - Group Headquarters
W. van der Zwan & Zn. B.V.
SMMI - Sunderland Marine Mutual Insurance Co., Ltd. - Headquarters
Icicle Seafoods Inc. -Headquarter-
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel ehf - Group Headquarters
SalMar ASA - Group Headquarters
Sajo Industries Co., Ltd
Hansung Enterprise Co.,Ltd.
BIM - Irish Sea Fisheries Board (An Bord Iascaigh Mhara)
CEFAS - Centre for Environment, Fisheries & Aquaculture Science
COPEINCA ASA - Corporacion Pesquera Inca S.A.C.
Chun Cheng Fishery Enterprise Pte Ltd.
Food Project (Siam) Co., Ltd.
VASEP - Vietnam Association of Seafood Exporters & Producers
Gomes da Costa
Furuno Electric Co., Ltd. (Headquarters)
NISSUI - Nippon Suisan Kaisha, Ltd. - Group Headquarters
FAO -Food and Agriculture Organization- Fisheries and Aquaculture Department (Headquarter)
Hagoromo Foods Co., Ltd.
Koden Electronics Co., Ltd. (Headquarters)
A.P. Møller - Maersk A/S - Headquarters
BVQI - Bureau Veritas Quality International (Head Office)
UPS - United Parcel Service, Inc. - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Omega Protein Corporation -Headquarter-
Grupo Calvo - Luis Calvo Sanz, S.A. (Group Headquarter)
Marona S.A.
Marine Harvest ASA - Headquarters
Marubeni Europe Plc -UK-
Findus Ltd
Icom Inc. (Headquarter)
WWF Centroamerica
Oceana Group Limited
The David and Lucile Packard Foundation
Ajinomoto Co., Inc. -Headquarter-
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
Mitsubishi Corporation Marine Products Depts. D.Team
CJ Corporation  -Holding Headquarter-
Greenpeace International - The Netherlands
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
Ocean Trawlers Group - Ocean Trawlers HK Ltd.
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation -Headquarter-
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart / Wal-Mart Stores, Inc. (Supermarket) -Headquarter-
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
INVE Group - Head Office
Marine Stewardship Council  - MSC Worldwide
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
Morpol ASA - Group Headquarters
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2014 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER