Category: News

The genetics group at Matís carries out, among other things, genetic analysis and research on salmon, both farmed and wild. Sæmundur Sveinsson is the head of genetics and he has looked at the life cycle of the Icelandic salmon and its genetic diversity by water area, genetic analysis of salmon from sea hog farming and genetic analysis of salmon for so-called fish farming to name a few. 

Icelandic salmon stocks

It is believed that wild Atlantic salmon have been in Iceland since the end of the last Ice Age, or for about 10,000 years. The life cycle of salmon has interesting consequences on the genetics of the species, but salmon spawn in fresh water, the fry live in rivers for 2-4 years and then go to sea. Adult, sexually mature salmon then return to the same river they grew up in after a year or two at sea, to spawn. A salmon that spends one year in the sea is called a small salmon, and a salmon that spends two years in the sea is called a large salmon. This behavior of the salmon, to seek out a nursery river for spawning, is partly determined by certain genes or genes. This life cycle means that populations in rivers are quickly genetically different from each other.

The life cycle of salmon and this genetic differentiation between populations means that the origin of salmon can be traced to rivers and lakes through genotyping. Salmon in Iceland is therefore extremely diverse and there is a great deal of genetic diversity within - and between water areas.

The Institute of Marine Research worked on research on the population genetics of Icelandic salmon, in collaboration with Matís, in the years 1990-2017, which showed precisely the great genetic differences between water areas and parts of the country. It is extremely important to preserve this diversity, but overall the genetic diversity of species is declining globally. In addition to this, salmon caught in the sea, mainly as bycatch from mackerel fisheries, were traced to rivers of origin. Those analyzes revealed that most of the salmon on Iceland's coast in summer turned out to be from continental Europe and Scandinavia. 

Brush salmon

For years, Matís has carried out genotyping analyzes of salmon. Streak salmon are fish that have escaped from sea pen farming and are then caught in rivers or the sea. Aquaculture inevitably involves the risk of farmed salmon escaping from the pens, but it is safe to say that no one wants this to happen and farm companies take various measures to prevent hatchery. In Iceland, a very efficient and good system is in place to keep track of the origin of salmon caught in rivers. It is a legal obligation to return all salmon that are caught to the Norwegian Fisheries Agency and/or the Norwegian Fisheries Agency. Matís receives a sample of the salmon for genotyping, which Hafró then uses to trace the origin of the fish, i.e. from which sea pen he escaped.

This system is based on the fact that Matís also genotypes all the broodstock used to produce fry in sea bream farming in this country. This data is used to perform paternity analyses, but all fish in a given pen have the same father, so their origin can be traced.

In August 2023, the Norwegian Food Agency, MAST, announced a large spill from a pen in Patreksfjörður. What was particularly serious about that streak was that most of the salmon caught turned out to be mature. That means the risk of serious genetic mixing is considerable. Matís received over 500 samples for analysis this fall.

Fish farming

In the fall of 2023, Matís began offering genotyping analyzes of salmon for fish farming. Fish farming refers to the raising of juveniles and juveniles and spawning from wild fish from the river in which the effort is being made to increase the number of fish and fishing. Matís' staff works very closely with the Norwegian Institute of Marine Research's experts in the organization's freshwater sector.

The Norwegian Fisheries Agency and Hafró agree that it would be very bad for salmon populations if farmed fish entered a hatchery and were used for fry or roe production. Salmon that have escaped early from a fire, i.e. when they were small, have very few visible signs of fire, and therefore it is not always possible to rely on the diagnosis of farmed salmon based on appearance. Genotyping is a powerful tool for identifying potential farmed salmon that could be included in fish farming. In autumn 2023, Matís carried out these analyzes for five fishing companies to ensure that only wild salmon would be used in fish farming.

A podcast about genetic analysis of salmon in Iceland

Sæmundur Sveinsson was an interviewer in Matvælinu, Matís' broadcast on research and innovation in food production these days. In the episode, he talks about genetic analyzes of salmon in Iceland over the years and especially the research that his professional group is currently working on. Sæmundi's song deals with these issues in an easy-to-understand and entertaining way, so it's safe to recommend listening!

The episode is available in its entirety on all major podcasts and in the player below:

The production, sale and distribution of Dalahvítlauk's products is an example of a successful process where Matís' advice and facilities come into play. Here you can find information and advice that should be kept in mind when starting food production.

The husband and wife Þórunn Ólafsdóttir and Haraldur Guðjónsson started producing garlic in full force in the summer of 2023, but garlic cultivation begins with sowing seeds in autumn and harvesting in late summer the following year. Last summer was spent almost exclusively on growing seeds, so the first whole garlics are expected in stores in the fall of 2024. However, a by-product of the seed cultivation is the cloves of garlic, which are too small for seeds, and that's where this story begins.

The couple turned to Matís for their sake The food factory which operates at Matís in Reykjavík and believed that operations in a fully equipped food factory that is already in operation would be sufficient to start food production, packaging, sales and distribution. However, something else happened during the day. Cultivation and sale of whole garlic does not require special permits since it is primary production. If the onion is further processed, such as separating the ribs in the onion, peeling, cleaning or further processing, then it is considered food processing.

Food processing, by whatever name it is called, requires a license. You need to apply for a work permit from those who grant it. The local health authority or the Swedish Food Agency, depending on the nature of the activity. In this case, it was the Reykjavík Health Authority that had to grant the permit.

Since some time had passed since the garlic was taken up, it was starting to lose quality, and therefore needed a quick hand in obtaining a work permit.

The first step is to make a quality manual. A quality manual must state what is to be produced, from which raw materials, who produces, where and how the production takes place. Information on nutritional content and possible intolerances is also needed. It must be demonstrated that the person understands the rules that food manufacturers obey, the shelf life of the product must be explained, which packaging will be used and confirmation that it is intended for food must be obtained. Then you need to know the difference between personal hygiene and general handling of food, for example possible cross-contamination and how to prevent it, but this is done through risk analysis.

You can follow fun posts about the crops and products on Dalahvítlauk's Facebook page here: Valley garlic.

be in touch

Here you can find information for new food manufacturers, such as instructions for starting production, distribution and sales:

Iceland has long been at the forefront of the utilization of so-called secondary raw materials, and one of the raw materials that is interesting to evaluate both with an opportunity for value creation and environmental issues in mind is water from, for example, fish processing plants and land farms. The Accelwater project that Matís is currently working on is about finding solutions to make use of value from process water and the best use of water in the fishing industry and cooking.

Hildur Inga Sveinsdóttir manages the part of the work that Matís does in the project, but it is done in collaboration with 17 parties from five European countries with funding from the European Union through Horizon 2020. "We decided to participate in the project in collaboration with strong industrial partners in Iceland and aimed to use the work in order to assess the opportunities that exist in this field in this country". The project is led by the Greek technology company Agenso and involves many participants, both from industry and the research environment. In addition to Matís, the Icelandic participants in the project are the University of Iceland's Faculty of Food and Nutrition, Útgerðarfélag Akureyri and Samherji Fiskeldi.

But what are side ingredients?

It's really a question of word usage, but it's often talked about side currents or side ingredients. This refers to raw materials that you can get out of processing that are not the main product you are looking for. Fishing and processing is a good example, where fishing is done in order to obtain fish fillets for consumption, while side streams are other raw materials that may have previously been defined as waste or garbage. These can be for example heads, skins, guts or whatever, but when you handle these things right there are opportunities to get a lot of value out of them.

We try to use the word side ingredient because that way we indicate that this is an ingredient that we can use for something, not just "extra junk" that we need to get rid of. We emphasize to stop talking about this as waste or rubbish because it often evokes negative mental associations that give a wrong image of the raw material. For example, in recent years, a variety of valuable products have been developed from fish roe, which in the past would have been thought to be impossible.

Fresh water use in food processing and better utilization

The main goal of the project is to use value from water and reduce fresh water consumption during food processing. Foreign partners are working on experiments within the value chain in tomato growing, meat processing, the dairy industry and in brewing. In Hérland, emphasis is placed on land cultivation of whitefish and land farming of salmon. Emphasis has been placed on assessing the situation by analyzing the environmental impact and use, then which resources are used in these different processes, and then what possible opportunities exist for saving water and energy resources on the one hand, and on the other hand what possibilities there are for value creation from the main water streams.

Water is a valuable resource

The discussion that has been created about the project keeps alive the important fact that we must not take it for granted that here in Iceland there is good access to the resource that is clean fresh water and we make sure to always use it as sparingly as possible. The project has also entered into an important discussion related to the development of rural agriculture in this country.

results The results of the project will be published in open scientific publications and presented to relevant stakeholders as appropriate so that they will be useful to other parties in the industry in Iceland and abroad. Results will also be useful for policy making and setting up and reviewing processes in fish processing and land farming, the latter of which is the fastest growing industry in Iceland today.

A podcast about Accelwater

Hildur Inga was an interviewee in Matvælin, Matís' podcast about research and innovation in food production these days. There she told about this interesting project and her passion for delivering the content of the Accelwater project clearly and surely shone through. The episode is both informative and refreshing, but it is available on all major podcast stations and in the player below.

Project page

Accelwater's progress can be followed on its project page here: AccelWater and on social media.

Matís has, in recent years, systematically built up genetic analysis of animals and there are staff in the professional group genetics who is credited with it. Among other things, research is conducted on livestock, especially cattle, horses and sheep. The projects carried out mainly consist of genetic analyzes of these beneficial strains and data processing together with sequencing of the genetic material of organisms, the search for new genetic boundaries and the development of genetic analysis kits.

In Iceland, some livestock stocks are specifically Icelandic, while others are imported. Chickens and pigs, for example, are imported, but cattle, horses, sheep and goats are entirely of Icelandic stock. This means that Icelandic companies are the only ones in the world that carry out breeding of these four livestock stocks. The Agricultural Advisory Center (RML) is in charge of breeding these stocks. At Matís, we have mainly worked with three species, i.e. cattle, horses and sheep.

Cattle farming

The Farmers' Association and the Agricultural Advisory Center (RML) worked for several years on the implementation of so-called genome selection in cattle breeding, and Matís carries out the genetic analysis used in this. In short, breeding in cattle breeding is based on finding and using the best bulls in breeding work. To put it simply, the best bulls are those that produce the best daughters, i.e. heifers that milk a lot, are healthy and fertile. In genome selection, the breeding value of bull calves is calculated based on genetic parameters analyzed soon after calving. This methodology therefore greatly speeds up breeding and increases safety in the selection of the best bulls that are then used for insemination. Matís' genetics group analyzes between 6,000 and 8,000 artifacts per year.

horses

Matís offers parentage analyzes in horses, but those analyzes are an important part of the breeding work of the Icelandic horse, which has gained more importance in recent years. With parentage analysis, the pedigree of horses is scientifically confirmed and this greatly increases the safety of all breeding calculations. These analyzes are also done in close collaboration with RML. The staff of RML and other sampling parties take care of sampling from horses, which takes place in a similar way to what people used when they took a Covid test. Matís then isolates the genetic material and performs the genetic analyses. The staff of the genetics group analyze between 1,200 – 2,000 horses each year.

At Matís, work is currently being done to also offer genetic analyzes in other genetic sites in horses. Ideally, it is color genes and known genetic defects that we are looking at. The Icelandic horse is an extremely colorful horse breed and it is part of the breeding goals to maintain color diversity within the stock. Color in horses is determined by 8-12 genetic sites (genes) and it would be valuable for Icelandic horse breeders to have access to analyzes of these color genes. RML's recruiters have especially noticed an interest in this among foreign buyers of Icelandic horses.

Sheep

Genetic defects

Few genetic defects cause a lot of damage in Icelandic sheep breeding, and only two are serious problems, namely yellow fat and bökkreppa. Both are recessive genetic defects, meaning that individuals need two copies of the defective gene for them to be affected. Yellow fat is caused by a mutation in a gene that breaks down certain yellow compounds and causes the fat to acquire a yellowish color similar to the color of fat on horse meat. The yellow fat has no effect on the taste quality, but some production centers do not accept artifacts that show this genetic defect, and therefore this can cause financial losses for individual farmers. Matís is awaiting genetic analysis of yellow fat.

Bow crisis is a much more serious genetic defect. The gene is unknown, so there is still no genetic test that identifies carriers. The genetic defect is not known in other breeds of sheep, but the phenotype manifests itself as severely deformed front legs and lambs often cannot stand up. Most individuals are therefore euthanized shortly after birth. Because the genetic defect is recessive, the defective gene can be hidden in herds and it is impossible to eradicate the defect except through genetic analyses.

Matís has been conducting research on bow crisis in recent years, in collaboration with RML and Keldur, to find the genetic defect in the sheep's genome and develop a genetic test. The first results of these studies are expected in February 2024.

Fertility genes and parentage analyses

Matís offers parentage analysis in sheep, comparable to parentage analysis in horses and dogs. A lot of rickets genes have been identified in recent years, and the situation has now arisen that the genotype of lambs does not match the genotype of the parents. Parentage analysis can be used to find the father of an offspring. These tests are an extremely useful tool in research, especially when looking for genetic defects.

Prion gene genotyping analyses

Matís has offered genotyping of the so-called prion gene in sheep since the company was founded. A total of about 10,000 sheep have been diagnosed with us. Rickets is a prion disease that has plagued Icelanders, especially in the last century but also in recent years. Prion diseases are different from bacterial and viral diseases, where the rubella agent is a protein. It therefore contains no genetic material. The rubella agent changes the structure of the natural prion protein, which is important in the nervous system of mammals. In a specific region of the prion gene, there are 6 sites that affect the susceptibility of sheep to scrapie. Three of these sites are very well known and three other sites in the gene are being investigated. The genotype of animals will in the near future be very important in breeding and the reaction of the Icelandic Food Agency when scabies is discovered in a herd.

Regarding the breeding side, RML aims to introduce protective genotypes very quickly in herds in parts of the country where rubella infection occurs regularly and steadily elsewhere in the country. With these methods and actions, it will be possible to spare certain genotypes from culling when scabies is detected in herds in the future. Matís has human resources and equipment to analyze genotypes in sheep. Considerable funds are expected in the 2024 budget for genotyping sheep, and Matís' staff is ready to take care of these analyses.

A podcast about heredity

Recently, a new episode of Matvælin, Matís' podcast about research and innovation in food production, was released. There was Sæmundur Sveinsson, genetics manager at Matís, interviewer, and he discussed genetic research and projects related to it in an easy-to-understand and fun way. It is possible to listen to the episode in its entirety on all major podcasts, but also here: Icelandic livestock species – genetic analyzes and breeding work

Matís' opening hours for Christmas and New Year will be as follows:
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Opening hours at Matís in Reykjavík during the holidays:

December 25: Closed

December 26: Closed

December 27: 8:30 a.m. – 4:00 p.m

December 28: 8: 30–16: 00

December 29: 8:30am–3:00pm

December 30: Closed/closed

December 31: Closed

January 1: Closed

January 2: Closed

After that, the normal opening hours will take effect again.

The tradition of shark eating in Iceland is rich and can be traced back centuries. Despite this, very few scientific studies have been conducted to examine or improve the mechanism of action of these foods. With a grant from the Food Fund, Matís' staff in collaboration with Bjarnarhöfn tourism, the largest producer of the best shark in Iceland, has worked on improvements there with the project Hákarlsverkun.

Election of a shark (Somniosus microcephalus) is an age-old method of preservation. Kæstur hakarl was for a long time an important source of energy and protein and also a large part of Icelanders' diet, but today it is mainly eaten as a delicacy on the dry land. Kæstur hákarl is also popular with tourists who like to consider it a national dish of Icelanders. It is important from a cultural point of view and Icelandic food tradition that a production process as unique as the effect of shark is, will continue to be practiced and that we have more scientific and technical knowledge of the effect of shark to ensure that the product is safe and of the right quality.

The cleaning process is actually both a preservation and a detoxification process, where chemical compounds that contain ammonia and are thought to contribute to the toxic effects of an unharmed shark are transformed by microbial enzymes. These chemical compounds that are found in large quantities in fresh shark are on the one hand urea which is broken down into ammonia and on the other hand Trimethylamine N-oxide (TMAO) which is reduced to Trimethylamine (TMA) and Dimethylamine (DMA). After freezing, the shark is left to hang in open drying huts called shelves for several weeks or months. In the project, comparative measurements were made on the effectiveness of a fresh shark on the one hand and on a shark that had been frozen and thawed before being frozen. The shark in the study was worked for 13 weeks, at which point it was considered ready for consumption.

The shark was sampled weekly during the curing period and every other week during the drying period. Chemical and microbiological measurements were made on all samples, but at the same time a sensory evaluation was carried out on the shark samples when they were considered suitable for consumption, i.e. during drying. The chemical measurements measured TMAO, TMA, DMA, acid and water content of the shark. In the microbial measurements, both cultures were carried out on agar plates, but also measurements with molecular biological methods (16S rRNA sequencing), which provide additional possibilities to assess the amount and analyze the diversity of the bacteria involved in the shark's digestion.

The project demonstrated for the first time which bacteria are present and to what extent over the entire course of action. It is thanks to these bacteria that shark action has played a part in keeping Icelanders alive throughout the centuries. The results of the project indicate that the curing process could be shortened, as the substance TMAO is destroyed in 5 weeks, but the shark is often cured considerably longer. It would also be possible to improve the process or control it with synthetic microbial cultures.

There was a clear difference in the composition of the initial microflora depending on whether the raw material was fresh or concentrated. As the freezing progressed, however, the composition became comparable in fresh and thawed shark. A relationship was found between high concentrations of TMAO and the bacterial genera Photobacterium and Pseudoalteromonas  in the initial phase of purification and in addition a relationship was found between a high concentration of TMA/DMA and the bacterial genera Atopotypes, Pseudomonas and Tissierella in the final phase of cooling.

The future of shark research.

This project, Hákarlsverkun, is now finished, but the work on it raised all kinds of questions that would be nice to find answers to with further research. For example, the researchers say that approx. one out of four sharks does not work correctly, but the product is damaged, despite the fact that all processes are exactly the same for all the raw materials. This could have something to do with the microflora, but hopefully Matís future research in collaboration with shark producers will reveal it.

Podcast show

Snorri Páll Ólason worked on this project in his master's program together with other Matís staff, but he was an interviewee in Matvælin, Matís' podcast program about research and innovation in food production. In the episode, he tells about the project and what it involved in a lively and entertaining way. Listen to the podcast here: A wounded shark, the national right of Icelanders?

Peer reviewed article

One product of the project was a peer-reviewed article published in the journal Heliyon detailing the results. The article is available here: Unlocking the microbial diversity and the chemical changes throughout the fermentation process of "shark”, Greenland shark.

Birgir Örn Smárason, professional director of the professional group Sustainability and fire, gave a speech at the Food Congress 2023, which was held recently. The talk has attracted a lot of attention, as he asked a question that many would like to know the answer to, What is for dinner in 2050?

The talk was, in line with the title, somewhat futuristic, but he used, for example, artificial intelligence in the creation of all visual material that appeared on the slides.

The need for change is considerable, as current food systems play a major role in climate change, deforestation and biodiversity loss. We therefore need to change gears in order to reduce these negative effects, but it is also important to adapt food production to the changes that have already taken place. In addition, the population on earth is increasing rapidly at the moment, and the demand for food will increase significantly in the coming years.

Adaptation and transformation are key when it comes to ensuring sustainable food production for the future, and technological development will play a major role in enabling us to make changes.

At Matís, much has been predicted about the future and the solutions we need to adopt to ensure the future of food production. For example, we have been involved in many projects, large and small, related to neoproteins. These include proteins derived from insects, macroalgae, microalgae, protozoa and grass protein. We have worked with people here in Iceland and around the world who are developing these new proteins and the technology behind them.

He gave specific examples of the projects NextGenProteins and Giant Leaps. The first project is a large European collaborative project that was completed this fall and was led by Matís. It focused on research on three types of sustainable neoproteins; microalgae, insect proteins and single cell proteins. The latter is a new project along these lines, but it seeks ways to accelerate changes in people's diets by influencing us, the consumers. They also seek to influence policies and orientation and try to overcome the regulations that are in force and prevent the use of new proteins and the technology behind them.

The technological revolution that is about to begin and the devices and tools that will affect food production in the coming years and decades were also the focus of Birgi's talk, and the artificial intelligence had no problem envisioning this.

In the end, the artificial intelligence created a picture of people who are deeply thoughtful about how our food systems work today and how they will develop in the coming decades, but that is exactly what we need to do, Birgir believes.

A recording from the Food Congress 2023 is available here and Birgis' speech begins at 6:01:30

Birgir will present the NextGenProteins project and its main results at the conference Green and Resilient Food Systems in Brussels 4.-5. december The main focus of this year's conference is the transition towards a sustainable food system for the benefit of the environment and the economy, and the NextGenProteins project seemed to speak particularly well to this theme.

The conference is organized by the European Commission and Food 2030. It will be possible to watch online, but the program and link to the stream is available here: Food 2030: green and resilient food systems