Reports

Utilization and composition of lumpfish

Published:

01/02/2012

Authors:

Ólafur Reykdal, Þuríður Ragnarsdóttir, Gunnar Þórðarson

Supported by:

AVS Fisheries Research Fund

Contact

Ólafur Reykdal

Project Manager

olafur.reykdal@matis.is

Utilization and composition of lumpfish

The results published in this report are part of the project Improved utilization of roe products. In the 2011 season, samples were taken from grayling caught in Húnaflói, Skagafjörður and Skjálfandi. Samples of gutted grayling were also obtained from two companies. The grayling was cut into five parts and individual parts were weighed. The average fillet utilization was 14% of total weight, eggs were 30%, liver 3%, spine 6%, beat 6% and whale along with head and tail 40%. Greenland halibut fillets were high in fat (8-18 g / 100g) but low in protein (8-9 g / 100g). The wave, on the other hand, was low in fat. Roe were particularly selenium-rich, but the heavy metals mercury, cadmium and lead were not measurable.  

Results in this report are part of the project Increasing utilization of lumpfish. Sampling was carried out in March to June 2011 in Húnaflói, Skagafjörður and Skjálfandi. Samples were also obtained from two companies. The lumpfish were cut into five parts and the parts were weighed. Fillets were 14% of lumpfish weight, roe were 30%, liver 3%, spine 6%, viscera 6% and skin together with head and tail 40%. Fillets were rich in fat (8‐18 g / 100g) but low in proteins (8‐9 g / 100g). The skin was however low in fat. Roe were very rich in selenium but the heavy metals mercury, cadmium and lead were below the quantification limits.

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Reports

Íslenskt bygg til matvælaframleiðslu / Icelandic barley for food production

Published:

01/12/2008

Authors:

Ólafur Reykdal (editor / editor), Jónatan Hermannsson, Þórdís Anna Kristjánsdóttir, Jón Óskar Jónsson, Aðalheiður Ólafsdóttir, Emilia Martinsdóttir, Birgitta Vilhjálmsdóttir, Jón Guðmundsson, Guðmundur Mar Magnússon.

Supported by:

The Agricultural Productivity fund

Contact

Ólafur Reykdal

Project Manager

olafur.reykdal@matis.is

Íslenskt bygg til matvælaframleiðslu / Icelandic barley for food production

The project "Increased value from Icelandic barley" was carried out in the years 2006 to 2008 in collaboration with Matís ohf, the Agricultural University of Iceland, barley producers and food companies. Measurements were made of nutrients, contaminants and microorganisms in the building. The hygienic beta-glucans, which are water-soluble fiber, attracted special attention. The safety of the barley was satisfactory according to measurements of microorganisms and contaminants. Tests on baking barley bread took place in companies and it was shown that Icelandic barley is well suited for baking products. Sensory evaluation and consumer surveys were conducted on barley bread and similar breads without barley. The barley bread had its own characteristics and received generally good reviews. Barley malt was produced and then used as a raw material in brewing. It was possible to produce beer of satisfactory quality, but the main problem with the malt production was the low germination rate of the barley. Draft quality requirements for Icelandic barley for the production of baked goods and barley malt were compiled.

The project “Increased value of Icelandic barley” was carried out during the years 2006 to 2008 in cooperation between Matis ohf, Agricultural University of Iceland, barley producers and food manufacturers. Nutrients, contaminants and microbes were measured in Icelandic barley. The water soluble dietary fiber, beta-glucan, was of special interest. The safety of Icelandic barley was sufficient according to measurements of contaminants and microbes. Barley was tested for bread baking and the result was that Icelandic barley can be used for bread making. Breads with and without barley were tested by sensory evaluation and consumer testing. Barley breads had special sensory properties and were well accepted. Malt was produced from Icelandic barley and used for production of beer. The beer was of good quality but the main problem with the malt production was low proportion of sprouting barley. Quality criteria were drafted for Icelandic barley for production of bakery products and malt.

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