Reports

Evaluation of mutton assessment

Published:

01/02/2007

Authors:

Ásbjörn Jónsson, Óli Þór Hilmarsson

Supported by:

Productivity Fund, Executive Committee for Agricultural Contracts

Contact

Óli Þór Hilmarsson

Project Manager

oli.th.hilmarsson@matis.is

Evaluation of mutton assessment

A new meat assessment for mutton according to the EUROP system was introduced in Iceland in the autumn of 1998. According to this, the carcasses are classified according to meat filling on the one hand and fat on the other. In the EUROP system, carcass filling is assessed in five main categories (E, U, R, O and P), where E is best and P is worst. Fat is also assessed in five main categories (1, 2, 3, 4 and 5), where 1 is the least and 5 the most. The fat subcategory, 3+, is also used in Iceland. In the EUROP system, the dilka carcasses are classified much more precisely by fat and body filling than was done in the old system. This precise classification serves both farmers, who get better information about their products, and meat processors who can better choose the type of meat carcass that is suitable for different processing. The aim of this project was to obtain information on the utilization, processing properties and chemical composition of dilka meat and dilka meat products, according to an assessment according to the EUROP system. During the 2003 and 2004 slaughter seasons, the assessment was carried out in three slaughterhouses. Carcasses in the following rating categories were studied: U2, U3, U3 +, U4, R1, R2, R3, R3 +, R4, O1, O2, O3, O3 +, P1 and P2. The right part of the carcass was divided into thighs, spine, beats and forequarters, to determine the ratio of meat, fat and bones. The left half was also disassembled and processed into products. Chemical measurements were performed on products to determine nutritional value. When carcasses were dissected into meat, fat, and bones, the average carcass meat content was 60%, the fat content averaged 19%, and the bone ratio averaged 18 %. Those who worked on the project were employees of Matís ohf. and Stefán Vilhjálmsson, chairman of the meat assessment, together with the employees of the slaughterhouses in question.

A new EU carcass classification system for lamb was introduced in Iceland in 1998. In the new system carcasses were evaluated according to conformation (EUROP classification: five classes, from E = '' good '', to P = '' bad '' conformation ) and fatness score (5 classes, from 1 = lean, to 5 = fat). The EU classification system is more accurate than the previous system and gives farmers more information about their carcasses and enables meat producers to select carcasses according to the different productions. The main objective of this study was to gain information about the utilization, processing quality and chemical combination of the carcasses, according to the new classification system. A study was performed in abattoirs in 2003-2004 according to the classification system. The right half of the carcasses were segmented into legs, loins, flanks and forequarters and then dissected into meat, fat and bone. The left half were segmented and processed further into final products. Chemical analysis was performed on the carcasses to estimate the nutritional value. The average proportion of the meat in the carcasses was 60%, proportion of the fat was 19% and the average bone proportion was 18%. The project was done by employees of Matís, Stefán Vilhjálmsson, chairman of the meat classification board, and the employees of the abattoirs.

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News

Article by Matís expert translated into Persian

One of the country's leading experts on the utilization of by-products from seafood is without a doubt Sigurjón Arason, engineer and head of Matís' Processing Department. An article on this subject was recently published in Persian on Iranfisheries.net

The background to the case is that in addition to his work as a scientist at Matís, Sigurjón is a teacher, including an associate professor at the Department of Food and Nutrition at H.Í. and also teaches at the United Nations University School of Fisheries ( FTP-UNU). It was exactly one student of the latter school, Gholam Reza Shaviklo, who translated the article.

The article entitled "Utilization of Fish Byproducts in Iceland" first appeared in the Advances in Seafood Byproducts 2002 Conference Proceedings. Alaska Sea Grant College Program, University of Alaska Fairbanks, Fairbanks, 43-62.

Gholam Reza Shaviklo is a student of the school in the school year 2006-07, but a total of five students from Iran have studied at the school since its establishment in 1998, and the total number of students is 126 from 23 countries.

News

MA and VMA students participate in the Matís project

Last year, a project was launched to promote increased consumption of seafood, especially among young people. Recently, students at Menntaskólinn á Akureyri and Verkmenntaskóli Akureyrar took part in a consumer survey, which is part of the project. 

Recent surveys indicate that fish consumption in Iceland has decreased considerably in recent years, most notably among younger age groups. It is important to counteract this development, both from a health point of view, as fish is generally considered harmful, but also from an economic point of view.

Although so much fish is exported from Iceland, it must not be forgotten that the domestic market is important for Icelandic fisheries and fish processing companies. Young people today are an important consumer group of the future, so it is important to consider measures to reverse this trend, through targeted education, advertising and marketing. 

The goal of the project, called Attitudes and fish consumption of young people: Improving the image of seafood is precisely to promote increased consumption of seafood through consumption surveys and promotional campaigns. As previously stated, the project began at IFL last year and is expected to be completed in 2008. Work on the projects carried out at IFL and other institutions that merged at the turn of the year will continue under the Matís brand.

Article about the project in Ægi (pdf)

News

Matís' first report deals with the effect of refrigeration speed on lamb quality

The first report published by Matís ohf deals with research on how cooling speed affects the quality of lamb. It states, among other things, that in recent years, engine cooling in slaughterhouses has increased significantly and cooling in meat is therefore faster than before, which sometimes wants to reduce the quality of the meat.

The report is called Effect of chilling on lamb tenderloin and it states that the speed of cooling has a great influence on the quality of the meat and the cooling must follow the process of freezing to death in such a way that the quality of the meat is as high as possible. Too rapid cooling or freezing of lamb shortly after slaughter can cause cooling in the meat and result in stiffer (tougher) meat. According to Ásbjörn Jónsson, one of the authors of the report, better quality is achieved if you wait to freeze the meat until the process of death solidification is fully completed.

The main objective of the project was to study the texture properties (tenderness) of lamb meat at different refrigeration temperatures and times in slaughterhouses. Temperature measurements were made in dilka carcasses in the slaughterhouse of slaughterhouses at different air temperatures. Samples were taken from the vertebral body dilka carcasses after varying lengths of presence in the meat hall, and they were frozen. Texture measurements were then performed on the samples to assess the effect of cooling on the muscle. The study showed that meat stored in a meat hall and frozen the same day (after 4-5 hours) was stiffer than meat that had a longer cooling time in the meat hall after slaughter.

In addition to Ásbjörn, those who worked on the project were Óli Þór Hilmarsson and Valur Norðri Gunnlaugsson. They all worked for Matra, but started working for Matís ohf at the end of last year. The project was funded by the Agricultural Contracts Executive Committee.

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Reports

Effect of chilling on lamb tenderloin

Published:

01/01/2007

Authors:

Ásbjörn Jónsson, Óli Þór Hilmarsson, Valur Norðri Gunnlaugsson

Supported by:

Agricultural Contracts Executive Committee

Contact

Óli Þór Hilmarsson

Project Manager

oli.th.hilmarsson@matis.is

Effect of chilling on lamb tenderloin

In recent years, cooling in slaughterhouses has increased significantly. Therefore, cooling in meat is faster. The speed of cooling has a great influence on the quality of meat. The refrigeration must follow the process of freezing to death in such a way that the meat quality is as high as possible, and it is therefore important to control the refrigeration process. Too fast cooling or freezing of lamb shortly after slaughter can cause cooling in the meat and the result is stiffer meat. The main objective of the project was to study the texture properties (tenderness) in lamb meat at different refrigeration temperatures and time in the slaughterhouse. Temperature measurements were performed in dilka carcasses in the slaughterhouse of slaughterhouses at different air temperatures. Samples were taken from the vertebral body dilka carcasses after varying lengths of presence in the meat hall, and they were frozen. Texture measurements were then performed on the samples to assess the effect of cooling on the muscle. The results of this study showed that meat stored in a meat hall and frozen the same day (after 4-5 hours) was stiffer than meat that had a longer cooling time in a meat hall. The project was carried out by Matís employees and funded by the Agricultural Contracts Executive Committee.

In recent years chilling in abattoirs has increased significantly and, furthermore, chilling in meat has become more rapid. The chilling rate has great effects on the quality of meat. The chilling has to correlate with rigor mortis to gain the best quality of the meat. A too rapid chilling or freezing of the meat shortly after slaughtering will cause cold shortening in the meat and the result is tough meat. The main object of the project was to study the textural properties of lamb meat at different chilling conditions and time in abattoirs. Samples were taken from the M. longissimus after different storage in the chilling room, and frozen. Measurements of textural properties were performed on the samples to estimate the impact of chilling of the muscle. The results indicated that meat stored for a short time in the chilling room and then frozen the same day (after 4 -5 hours) was tougher than meat stored for longer time in the chilling room. The project was done by employees of Matís and sponsored by the Ministry of agriculture.

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Reports

Attitudes and fish consumption of young people: Improving the image of seafood

Published:

01/01/2007

Authors:

Gunnþórunn Einarsdóttir, Kolbrún Sveinsdóttir, Emilía Martinsdóttir, Friðrik H. Jónsson, Inga Þórsdóttir, Fanney Þórsdóttir

Supported by:

AVS Fisheries Research Fund

Contact

Kolbrún Sveinsdóttir

Project Manager

kolbrun.sveinsdottir@matis.is

Attitudes and fish consumption of young people: Improving the image of seafood

The aim of the project was to gather information on the attitudes and consumption of fish by young people. The report describes the results of an attitude and consumption survey among people aged 17-26 and data were collected in two ways in 2006. Information from Statistics Iceland showed that 61.5% people at this age were in school and the survey was submitted to that group. in lessons. A total of 800 upper secondary school students and 399 university students were reached. From a random sample of 2,300 working people (100% employment rate) aged 17-26 from Statistics Iceland, 2252 received the questionnaire by post. A total of 536 (24%) responded to the online survey. A total of 1735 respondents out of 2000 (86.7%) were initially targeted. The questionnaire can be divided into ten parts. The first part asked about attitudes towards health and food categories. The next part asked about fish consumption, consumption of fish species, various foods and the purchase of fish. The third part asked about the taste of different fish dishes. They were asked what was most important when buying fish in the fourth part. The fifth part asked about factors that affect fish consumption. In the sixth part, the assumptions of fish consumption were assessed, ie. inspiring and discouraging elements. The seventh asked about external influences on fish consumption. In the eighth part, knowledge of the nutritional value and handling of fish was assessed. The ninth part examined where consumers get information about fish and the trust they place in such information. Finally, the background of the interviewees was asked. The questions were analyzed in terms of gender, age, education, place of residence, number of children under the age of 18 in the household, whether the individuals had children or not and household income. On average, young people aged 17-26 eat fish as a main course 1.3 times a week or about five times a month, which is well below the recommended level. It was found that eating habits in childhood have a formative effect on people's fish consumption and also residence, on the one hand in the capital area and the countryside as well as living abroad at a young age. People aged 17-26 seem to have been brought up with fish consumption, which has a significant effect on their fish consumption. It was also found that the proportion of these people who have left home eat the least amount of fish. Those who live in the countryside do not have fish shops or fresh fish tables in the supermarkets in their area and therefore do not have as many fish dishes to choose from in the shops and rather eat traditional fish types and dishes. Fish balls, grated fish and boiled fish, all of which can be considered rather traditional dishes, seem to suit the tastes of a certain group of consumers. The second group prefers so-called hidden fish (light sauce, thick sauce, stew and oven-baked dishes), and the third group prefers exotic dishes (Mexican, tropical, Indian and Japanese). However, there are some gender differences in attitudes and men answer that they are less for healthy food, fish, vegetables, pasta dishes but are more for meat and fast food than women. Women are more for fish and enjoy the food better with fish than without it. They are still generally less for food but like to cook food more. The family is a strong influence on fish consumption, it is most sought after for information and most trusted. Young people seem to trust scientists to provide reliable information, but little is sought for information. The information that young people receive comes largely from the internet and other media. Scientists need to make greater use of this in disseminating information that is relevant to the public.

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News

Salted fish ready in the pot and in the pan

IFL recently published a report on the project Thawed salted fish in consumer packages, where, among other things, factors were studied such as how the shelf life of dehydrated cod fillets could be maximized.

As many people know, salted fish has been one of the most important exports of Icelanders since the early 19th century, and even today the export of salted seafood amounts to 15-20% of the export value of Icelandic seafood. Many consumers today do not feel they have the time or interest to spend too much time on cooking and therefore the demand for fresh, ready-made or fast-cooked foods has increased significantly. However, such foods are much more sensitive than salted or frozen and have a much shorter shelf life.

In order for salted fish to continue its market share, it is necessary to be able to offer it dehydrated and ready for boiling / frying. In order for this to be possible, it must be ensured that it has a sufficiently long shelf life as a refrigerated product.

In the new report, which bears the title Thawed, dehydrated cod fillets in consumer packages was drawn attention to, among other things, by examining in more detail the interplay between gas composition, potassium sorbate concentration and citric acid concentration with regard to factors such as microbial and chemical changes, taste, smell, texture, appearance and drip.

The project also carried out shelf life tests on dehydrated, thawed, salted fish fillets after different lengths of frozen storage, and the quality of such fillets was compared with unfrozen fillets. The effects of different raw material qualities on the shelf life of packaged products were also investigated, as well as the growth potential of several pathogens and pointing organisms in gas-packed, dehydrated fillets.

The authors of the report are Hannes Magnússon, Kolbrún Sveinsdóttir, Ása Þorkelsdóttir, Emilia Martinsdóttir, but they all work at IFL's Research Division.

News

Companies in Australia use research from IFL to advertise their products

A company in Australia has relied on the results of an IFL scientific article to advertise the equipment it manufactures. The main author of the article, which was recently published in the scientific journal Journal of Microbiological Methods, is Eyjólfur Reynisson, a biologist at IFL.

The Australian company is called Corbett Research and manufactures devices, tools and substrates for real-time PCR. They produce, among other things, Rotorgene3000, which is a real-time PCR device, but it was used in the study that IFL published this year. The study found that with their devices, the sensitivity of the analytical method had been highest compared to two other systems that were also tested.

The article in question is called Evaluation of probe chemistries and platforms to improve the detection limit of real-time PCR and Eyjólfur Reynisson is its main author. Other authors are MH Josefsen, M. Krause and J. Hoorfar.

Those who are interested in reading the article can go on Eyjólfur's CV page.

News

Reduced protein intake in feed - increased profitability in cod farming?

The project was recently completed Protein requirement of cod where ways were sought to reduce the cost of cod farming and make this young industry more profitable. Feed cost is 40-60% of the total production cost of the fire and therefore attention was focused on whether and how it could be reduced. A new IFL report presents the results of this study.

There has been a lot of talk about the alleged deplorable state of wild fish stocks recently, and the journal Science recently published a report predicting the collapse of all the world's fish stocks by the middle of this century. In fact, not everyone was prepared to accept this pessimistic forecast, including the director of the MRI.

Apart from these disputes, it is predicted that aquaculture, not least aquaculture of sea species such as cod, will grow enormously in the coming years and decades. Icelanders have been following this development closely, as have many nations in the North Atlantic, and cod farming has already begun in several places in Iceland. 

As stated earlier, feed costs are between 40-60% of the total production cost of the fire and in order to increase profitability in this industry, it is clear that there are most promising ways to reduce costs. Protein is the most expensive nutrient in feed for fish and therefore it is very important to minimize its content so that it goes primarily to building muscle and not to energy consumption, as cheaper nutrients, such as fat, can be of similar use.

In a new IFL report Protein requirements of farmed cod Among other things, a study was reported where the goal was to find the optimal protein content for two size categories of cod, on the one hand 30-100g and on the other hand 300-500g of cod. Among other things, the research showed that the larger cod's (300-500g) need for protein was less than what is normally used in factory-produced feed today. There is therefore possibly one way to reduce feed costs without compromising the quality of the cod.

Protein requirement of cod which was a two-year project funded by the AVS Fund. The project was part of a larger project, Feed for Atlantic cod, which was funded by the Nordic Industrial Development Fund October 2003 - 2006. Icelandic participants in the project were IFL, Fóðurverksmiðjan Laxá, Hólaskóli, SR mjöl, the University of Akureyri and Brim fiskeldi.

News

IFL researcher received honorary award at international conference

Dr. Guðrún Ólafsdóttir, a food scientist at IFL, recently received an honorary award named after Earl P. McFee. The award was presented at a celebration program in connection with the TAFT 2006 conference, which took place in Quebec City, Canada on October 29. to Nov. 1

The conference was organized WEFTA (West European Fish Technologists Association), an association of scientists in the field of fish industry research in Western Europe and AFTC (Atlantic Fisheries Technologists Conference), a similar organization of scientists on the east coast of North America and Canada.

An old dream of many scientists came true in 2003 when the TAFT 2003 (Trans Atlantic Fisheries Technology Conference) was held in Iceland, where many of the leading scientists from Europe, the United States and Canada in the field of research on seafood and its utilization came together for the first time and compared their books. IFL was responsible for organizing the conference in 2003, and it was considered so successful that another TAFT conference, which would be held in the West Sea in 2006 and Quebec City in Canada, was chosen.

The award is named after Earl P. McFee, who pioneered in the middle of the last century for frozen products from frozen fish blocks and use in fish burgers at McDonalds. The AFTC organization established The Earl P. McFee Award in 1971 for the purpose of recognizing those who deserve special credit for their research and technological development in fish and seafood processing and for promoting the interaction of scientists, industry and government. The emphasis today is on further strengthening the co-operation between AFTC and WEFTA and aiming for joint conferences and research co-operation in the field of seafood.

Many world-renowned researchers in this field have received the award in recent decades, and several of them attended TAFT 2006, including Herb Hultin (University of Massachusetts, Amherst), Tom Gill (Dalhousie University, Halifax), Michael Morrissey (Oregon State University). ), Chong Lee (University of Rhode Island), Tire C. Lanier and David Green (North Carolina State University), and Luc Leclerc (Aquatic Products Technology Center, Ministry of Agriculture, Fisheries and Food, Quebec, Canada), who co-organized the conference with Pierre Blier (Québec University, Rimouski). Torger Börresen of the Danish Fish Research Institute DIFRES, which won the award in 2003, presented the award this time, which was in addition to the award, a small statue made by a Canadian artist of Inuit descent.

McFee Prizes
EN