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


Thomas Larsson developed a PhD project stressing new gene technology methods. (Photo: Nofima)

Salmon fillets can be made firmer

Click on the flag for more information about Norway NORWAY
Monday, November 19, 2012, 22:30 (GMT + 9)

The firmness of salmon fillets is something the consumer perceives as a characteristic of quality and is an important factor for processing to be considered by the producer. By making use of new gene technology methods in quality research, in his PhD project Thomas Larsson points to the fact that the key to a firmer fillet lies in efficient metabolism of nutrients in the cells, and that this is determined by the genes in the fish.

“In order to find the biological difference in salmon with soft and firm fillet, we have used a method called microarray. This is a method used to study if genes are turned on or off in salmon with varying firmness in their musculature,” says Larsson.

“Gene analyses tells us what happens in the fish at a molecular level and indicates the cause of undesirable softness in farmed salmon fillets. By studying thousands of genes simultaneously, the method functions as an efficient screening tool to point to key factors that influence the firmness.”

The microarray used here is specific for salmon and was developed at Nofima Mat, the Norwegian Institute of Food, Fisheries and Aquaculture Research, by Aleksei Krasnov. This is a suitable method for studying regulation of genes in salmon.

This new approach regarding the use of method in Larsson’s work made it possible for the first time to map the biological causes of variation in the firmness of salmon fillet.

Efficient conversion of nutrients occurs in the cellular energy plants, the mitochondria (aerobic metabolism). The gene analyses showed that salmon with firm fillet had more aerobic metabolism, by using fat as fuel, than salmon with softer fillets. Efficient mitochondria were a requirement for the formation of firmer salmon fillets.

The knowledge from the gene analyses was used as a basis to design salmon feed that stimulates formation of firmer fillets. A feeding trial involved salmon feed with extra amino acid supplements (glutamate) being fed to one group of salmon, while another group received normal feed.

The salmon that received the feed containing extra glutamate had stimulated aerobic metabolism, which resulted in a firmer fillet.
 
Positive health benefits were also observed. Sick salmon are not in a position to fulfil the biological requirements to form normal firm muscle, and these fish instead developed abnormally hard muscle.

[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
Russian Federation
Oct 29, 08:00 (GMT + 9):
IN BRIEF - Crisis in the Pollock Catchers Association: Russian Fishery Company 'sailed to court'
European Union
Oct 29, 08:00 (GMT + 9):
The fisheries Brexit negotiation must exclude the privileges that the Common Fisheries Policy has granted to the UK since its inception
Mauritania
Oct 29, 05:00 (GMT + 9):
CEPESCA publishes the images of the rescue yesterday by the F/V 'Riodomar IV' of 215 immigrants
Maldives
Oct 29, 05:00 (GMT + 9):
Media Statement from Government of Maldives on the status of Indian Ocean yellowfin tuna stock (video)
European Union
Oct 29, 01:30 (GMT + 9):
Otros Medios | Industrias Pesqueras: La EUFA demanda que el acuerdo de ‘brexit’ acabe con los 'privilegios' de Reino Unido en la PPC
Russian Federation
Oct 29, 01:00 (GMT + 9):
Federal Agency for Fishery report on salmon season and roes
Spain
Oct 29, 00:50 (GMT + 9):
Other Media | Alimarket: Carrefour increases its sales by 7.5% from January to September
European Union
Oct 29, 00:00 (GMT + 9):
Other Media | La Voz de Galicia: Brussels proposes new cuts for hake, monkfish and Iberian rooster
Russian Federation
Oct 28, 20:00 (GMT + 9):
As of October 26, Russian fishermen have caught more than 4.2 million tonnes
Norway
Oct 28, 19:00 (GMT + 9):
Fish Pool Salmon Price Status Report for week 44
Solomon Islands
Oct 28, 17:00 (GMT + 9):
Operation Kurukuru air surveillance on Illegal, Unregulated and Unreported (IUU) fishing
Japan
Oct 28, 16:30 (GMT + 9):
Auction prices for common squid (surume ika, todarodes pacificus) frozen on board │ Ogi market (until oct-23)
United States
Oct 28, 09:00 (GMT + 9):
What threat do microplastics, a.k.a. ‘ocean hitchhikers’, pose to aquaculture?
United States
Oct 28, 07:00 (GMT + 9):
PRESS RELEASE - NWAA STATEMENT REGARDING PATAGONIA AND THE WILD FISH CONSERVANCY (video)
France
Oct 28, 05:50 (GMT + 9):
Mediterranean bluefin tuna fishery now MSC certified



Lenguaje
FEATURED EVENTS
  
TOP STORIES
The course of pelagic fishing week 43
Norway This autumn's best NVG herring week and less mackerel from the North Sea Mackerel: We received significantly smaller quantities of mackerel than in the previous three weeks. A total of 23,100 to...
Statistics │ Import by origin │Crab │ September 2020
South Korea Source: FIS.com | Click to enlarge it [email protected] www.fis.com...
Tuna exports to Italy soar in September
Viet Nam NDO/VNA – Vietnam’s tuna exports to Italy soared by 8,599% last month over the same period last year. This staggering increase transformed Italy into Vietnam's largest tuna market in the EU in ...
Coast Guard saves sinking fishing vessel near Icy Bay, Alaska
United States KODIAK, Alaska — The Coast Guard assisted a fishing vessel taking on water and disabled, six miles south of Icy Bay, Alaska, Wednesday. A Coast Guard Air Station Sitka MH-60 Jayhawk helicopte...
 
Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation - Wartsila Group Headquarters
ITOCHU Corporation - Headquarters
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Sea Harvest Corporation (PTY) Ltd. - Group Headquarters
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
AquaChile S.A. - Group Headquarters
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
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel - 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.
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
Brim ehf (formerly HB Grandi Ltd) - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Mowi ASA (formerly 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. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
CJ Corporation  - Group Headquarters
Greenpeace International - The Netherlands | Headquarters
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
NOREBO Group (former Ocean Trawlers Group)
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation - Headquarters
Cooke Inc. - Group Headquarters
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart | Wal-Mart Stores, Inc. (Supermarket) - Headquarters
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
Marine Stewardship Council - MSC Worldwide Headquarters
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2020 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER