News

Quick quality measurements during food processing

In recent months, Matís has been working on a project with the aim of improving process management in food.

Efforts have been made to achieve this goal by researching new rapid measurement methods for food quality indicators and designing food processing processes that make use of these methods. In the project, funded by the Rannís Technology Development Fund, the possibilities of near infrared (NIR), Nuclear Magnetic Resonance (NMR) and X-ray X-ray metering technology are evaluated to measure the chemical content of food (NIR) and other properties (NMR) and water content. X-ray). 

Conventional measurements to assess these quality factors are often time consuming and require the use of organic or hazardous solvents, but no such materials are involved in measurements using these rapid methods on which the project is based. The methods also all have in common that they do not cause any changes in the quality of food during measurements, which allows them to be used in real time in food processing lines. 

With the advent of these quick methods, production can be better controlled and ………………more

News

Articles by Matís' staff in scientific journals

Electronic versions of two articles are now available in the Journal of Food Engineering and Food Chemistry (see links below). 

Both sectors are related to salted fish processing. The first article discusses the effect of different brine concentrations on the weight changes of cod muscles and the uptake of salt during pickling. The second article discusses the effect of different salting methods on protein deformation and how the results can be linked to variability in product utilization.

The articles are the result of doctoral projects that have been done for the most part at Matís, ie. the project of Minh Van Nguyen who is studying at the University of Iceland and the project of Kristín Anna Þórarinsdóttir who has graduated from Lund University Sweden. 

The projects were funded by AVS (R042-05), Rannís (R051364005) and the Nordic Innovation Center Fund (04252). In addition, the United Nations University-Fisheries Training Program has funded Minh Van Nguyen for the program and Kristín Anna Þórarinsdóttir's Nordic Marine Academy (NMA) program.

The main information about the articles, as well as an excerpt, can be found below. The names of the authors who work at Matís are underlined. For further information, please contact Kristín Anna Þórarinsdóttir, Director of Matís (e-mail: kristin.anna.thorarinsdottir (at) matis.is). 

Minh Van Nguyen, Sigurjon Arason, Kristin Anna Thorarinsdottir, Gudjon Thorkelsson, Agusta Gudmundsdottir. 2010. Influence of salt concentration on the salting kinetics of cod loin (Gadus morhua) during brine salting. Journal of Food Engineering, Volume 100, Issue 2, 225-231

Abstract
The influence of different salt concentrations of 6%, 15%, 18% and 24% (w / w) on mass transfer of water and salt during brine salting of cod loins was studied. An increase in salt concentration accelerated water exudation and salt diffusion in the cod loins. Weight gain of the cod loins increased with decreasing salt concentration and the cod loins in the 6% brine had the highest process yield. The salting kinetic parameter values for total and water weight changes decreased with increasing salt concentration. Inversely, higher salting kinetic parameter values for salt weight changes were observed for higher brine concentrations. The samples brined at 18% and 24% had identical effective diffusion coefficients and the highest effective diffusion value was found in the cod loins brined at 15%.

doi: 10.1016 / j.foodchem.2010.09.109 

Kristin Anna Thorarinsdottir, Sigurjon Arason, Sjofn Sigurgisladottir, Thora Valsdottir, Eva Tornberg. 2011. Effects of different pre-salting methods on protein aggregation during heavy salting of cod fillets. Food Chemistry, Volume 124, Issue 1, Pages 7-14.

Abstract
The use of injection and brining as the first step in heavy salting of cod increases weight yields of the products through both salting and rehydration, compared to other pre-salting methods, like brining only and pickling. This is interesting since salt content of the muscle exceeds 20% NaCl, in all procedures. Therefore, the dissimilarities in yield were presumed to depend on the degree of protein denaturation and aggregation as influenced by the different salting procedures. This hypothesis was studied and confirmed with the aid of SDS – PAGE and DSC-analysis. Higher water retention of injected products was explained by stronger salting-in effects on proteins during pre-salting, reducing aggregation of muscle proteins during the dry salting step. The degree of protein aggregation during salting increased in the following order with regard to the different pre-salting methods: injection and brining <brining <pickling. These effects were still observed after rehydration. Furthermore, differences in denaturation / aggregation were assigned to both myosin and collagen.

doi: 10.1016 / j.foodchem.2010.05.095

News

New bleeding and cooling system such as Stefnir ÍS

Matís, together with 3X, recently went on a voyage on board the icefish trawler Stefni ÍS 28, the ship of Hraðfrystihús Gunnvarar in Ísafjörður.

The purpose was to examine the different bleeding and cooling methods on board and find out which one was of the highest quality. The implication of the study was that 3X last summer built a snail basket on board Stefnir with the aim of cooling the product before it boarded a train.

This project is part of a large project called The Processing Process of Line Fishing Vessels.

Further information can be found here but in addition Róbert Hafsteinsson provides, robert.hafsteinsson@matis.is project information.

News

Matís employees wear pink

October is the month of the Pink Ribbon and the awareness campaign against cancer in women. On that occasion, Matís pink wears the employees today. In addition, Matís is a supporter of the Pink Ribbon.

More about the campaign can be found on the Cancer Society's website, www.rabbb.is.

News

A traditional day at Matís

At Matís, there are usually quite a number of employees / students who have a home other than in Iceland. Some work for Matís all year round, while others work for the company for a shorter or longer period of time.

Matís invests heavily in collaboration with foreign parties, both to market Iceland's knowledge in fisheries and agriculture, but also to seek knowledge and capital from abroad to strengthen Icelandic companies. Further information on Matís' international collaboration can be found here.

These days, there are especially many foreign students / employees at Vínlandsleið 12. Matís teaches at the United Nations Fisheries Academy, so there is a lot about the man for lunch. Students and staff come from 16 countries, such as Malaysia, Indonesia, Sri Lanka, China, Vietnam and Ghana, to name a few.

The picture shows employees eating lunch at the company's headquarters at Vínlandsleið.

Further information on the United Nations Fisheries Academy can be found here.

Reports

Processing in line boats / Processing in line boats

Published:

01/10/2010

Authors:

Róbert Hafsteinsson, Albert Högnason, Sigurjón Arason

Supported by:

Technology Development Fund

Contact

Sigurjón Arason

Chief Engineer

sigurjon.arason@matis.is

Processing in line boats / Processing in line boats

This project is a collaborative project of the following companies; Matís ohf, Brim hf, Samherji hf, Vísir hf, Hraðfrystihúsið Gunnvör hf and 3X Technology. The aim of the project is to improve the processing processes of longline vessels with a view to reducing the cost of processing, increasing work efficiency and product quality. The result of this report is: Design of a production process on board liner vessels, a result report. Experimental report on thawing of bait, saury, condoms and herring. And a preliminary draft for the design of an automatic train system on board a liner. The main results of the project are the following: Great optimization involves thawing the bait in so-called snail tanks, the thawing time will be reduced from 17 hours to about 2-3 hours. Instead of taking the bait out 17 hours earlier, it is fed directly into the thawing tank from the bait freezer. This method saves a lot of time. Experiments show that fish that are allowed to bleed for approx. 10-15 minutes during a large water change, are then gutted and then cooled down to zero degrees for approx. A special processing process was designed on board liners that addresses these quality stamps. A preliminary draft of an automatic train system on board future liner vessels was also designed. The purpose of such a system is to have no train attendant on board the train, but to arrange and sort it on top of the working deck in the trolleys. The tub then goes into a specially designed tub lift, which was also designed for this project, onto the train and onto special train straps that move the tub to the relevant place on the train.

This project is a collaboration work between; Matis ohf, Brim hf, Samherji hf, Vísir hf, Hradfrystihusið Gunnvör hf and 3X Technology. The object of this project is to improve the process in line boats by reducing production costs, improve working conditions and product quality. The projects payoff is; Design of processing line onboard line boats, payoff report. Experiment report on thawing of bait, Saury, Cuttle and Herring. Also preliminary design of automatic system for loading boxes from holds in line boats. The primary results from this report are as follows: A great increase in efficiency is by thawing the bait in so called screw tanks, the thawing time reduced from 17 hours (current thawing method) down to appr. 2 - 3 hours. Instead of taking the bait out of the freezer 17 hours before use, the screw tank is feed from the freezer simultaneously. Previous experiments show that when the fish is bleeded for appr. 10‐15 minutes, and then gutted and afterwards cooled down to zero degree on Celsius for approx. 20-25 minutes in a special screw tank filled with slush gives increased fish quality. A special processing trail was designed for lineboats which takes into account this quality.

View report

Reports

Comparison of cooling techniques - Their efficiency during cooling their effect on microbial and chemical spoilage indicators

Published:

01/10/2010

Authors:

Lárus Þorvaldsson, Hélène L. Lauzon, Björn Margeirsson, Emilía Martinsdóttir, Sigurjón Arason

Supported by:

EU (contract FP6‐016333‐2) Chill ‐ on

Contact

Sigurjón Arason

Chief Engineer

sigurjon.arason@matis.is

Comparison of cooling techniques - Their efficiency during cooling their effect on microbial and chemical spoilage indicators

The aim of the experiments was to investigate the effects of different types of ice during cooling and storage of whole, gutted fish on heat and damage processes. Three types of ice were used: traditional crushed plate ice ("flake ice") (referred to as PI here) as well as two types of ice scrapers (liquid ice) produced in specially designed ice scrapers (referred to as LIA and LIB here) with different salt and ice ratios. The results of temperature measurements showed much faster cooling with an ice scraper than conventional flake ice. Then cooling down proved to be somewhat faster with one type of ice scraper (LIB) than the other (LIA) because the temperature of haddock cooled in LIB went from 7.5 ° C down to 0 ° C in 20 - 30 min compared to about 55 - 60 min in LIA. The corresponding time for traditional flake ice was about 260 min. The difference in cooling time in the LIA and LIB can be partly explained by the 10% heavier fish in the LIA group. Cooling whole haddock from 10 ° C and 20 ° C gave similar results as cooling it from 7.5 ° C. Cooling time from 10 ° C to 4 ° C was 24 min for the LIB group and 36 min for the LIA group. The comparable cooling time from 20 ° C to 4 ° C was 46 min for LIB compared to 55 min for LIA. The results of microbiological measurements by cultivable methods showed that little growth of specialized pests (SSÖ) on haddock skin occurred early in the storage period, regardless of the cooling method. With further storage, microbial growth was similar between the cooling groups with an ice layer at the top of the vessel. Comparable microbial growth was observed in the flesh until on day 8, a significantly higher number of Photobacterium phosphoreum and H2S-producing bacteria were found in LIB-chilled fish. It is interesting to note that the different temperature profiles measured among the refrigeration groups did not reflect the microbial growth that took place. In fact, SSÖ's damage capacity did not appear to be less in the coldest conditions during the storage period, as significantly higher levels of TVB-N and TMA were measured in fish treated with ice scraping compared to conventional ice storage. It is possible that the conditions created by these waterlogged and salted conditions when using ice scrapers are undesirable and lead to a faster damage process than occurs under icy conditions.

The aim of study was to investigate the effects of different ice media during cooling and storage of whole, gutted whitefish on temperature control and spoilage indicators. The thermodynamic, microbial and chemical properties of whole, gutted haddock were examined with respect to the cooling medium in which it was stored. Three basic types of cooling medium were used: traditional crushed plate ice (PI + PI) and two types of commercially available liquid (slurry) ice, here denoted as LIA and LIB. The ice types were furthermore divided into five groups with different salinity and ice concentration. Microbiological analysis by cultivation methods revealed that growth of some specific spoilage organisms (SSO) on fish skin was delayed at early storage, independently of the cooling methods. With further storage, little or no difference in counts was seen among traditionally iced fish and those cooled in liquid ice for 2 h before draining and top layer icing. Even less difference was observed in the flesh microbiota developing until significant growth increase in Photobacterium phosphoreum and H2S ‐ producing bacteria was seen on day 8 in LIB cooled fish. Interestingly the differences obtained in the temperature profiles of fish cooled differently were not supported by different bacterial growth behavior. In fact, SSO spoilage potential was not reduced in the coolest treatments as time progressed, as demonstrated on day 8 by the significantly higher TVB ‐ N and TMA content of fish cooled in liquid ice compared to traditional icing. Conditions created by liquid ice environment (salt uptake of flesh) may have been unfavorable, causing an even faster fish deterioration process with increasing storage time compared to traditional ice storage. Evaluation of the thermodynamic properties showed that LIB gave slightly faster cooling than LIA. For haddock stored in LIB the flesh reached 0 ° C in 20‐30 min, but it took 57 min in LIA and around 260 min in crushed plate ice (PI). The difference in the cooling rate of LIA and LIB might, apart from the physical properties of the ice, be partially explained by the fish weight, being on average 10% more in the LIA group. The additional cooling rate experiments where whole, gutted haddock was cooled down from 20 ° C and 10 ° C gave similar results. When cooled down from 20 ° C the haddock reached 4 ° C in 46 min when chilled in LIB while the same process in LIA required 55 min. Similar difference was seen when the material was cooled down from 10 ° C, where fish chilled in LIB reached 4 ° C in 24 min and fish chilled in LIA reached 4 ° C in 36 min.

View report

News

Matís meets in the Westfjords

This week, several Matís employees will travel to the Westfjords and meet about opportunities that currently exist in the food industry in the area.

Matís runs an office in Ísafjörður. The main emphasis in Matís 'operations in the Westfjords is the development of production processes in collaboration with companies in the area, general technical advice for Matís' customers in the form of design and technical work. Emphasis is also placed on aquaculture, especially cod farming in the sea, and there is also strong research and development work in good cooperation with companies in the area.

There is a great precondition in this area to look at other factors as well and strengthen them even further. Small-scale food production is one factor that can be strengthened. Matís has for some time now operated Matarsmiðja in Höfn in Hornafjörður, where users learn the correct working methods from the beginning. The facility at Matarsmiðjan in Hornafjörður provides a unique opportunity for innovation in small-scale food production. A number of projects have already been launched in Matarsmiðjan and entrepreneurs from Reykjavík, among others, are coming to product development and small-scale production (more about Matarsmiðjan here).

Other factors such as improved utilization of fresh seafood and biochemical processing from raw materials that would not otherwise be utilized, such as cuttings in fish processing. The market for health products with bioactive substances is huge and has a turnover of hundreds of billions a year worldwide, so there is still a long way to go.

The meeting will take place in the meeting hall of the Development Center, Árnagata 2-4 in Ísafjörður, on Tuesday 5 October at 20. The meeting will be chaired by Daníel Jakobsson, Mayor of Ísafjörður.

The meeting is open to everyone and people are encouraged to attend.

The program in pdf format can be found here.

News

MNÍ Food Day, October 27, 2010

The title of this year's conference will be Is there information on nutrition and supplements in the wild?

With this press release, the preparatory committee for MNÍ Food Day 2010, which will be held on Wednesday 27 October at the Hilton Reykjavík Nordica Hotel, reminds the media and others concerned about MNÍ day and encourages good writing and active news coverage on the important issue that will be discussed.

The consumption habits of the Icelandic nation as a whole are of great importance to all of us with their direct impact on health and various lifestyle-related diseases. The Icelandic Food and Nutrition Association (MNÍ, www.mni.is) wants to contribute by dedicating itself to the company's annual conference, Food Day MNÍ, a discussion on nutrition and dietary supplements. The importance of the correct dissemination of information on nutrition and dietary supplements and their scientific background is the main focus of the day, as incorrect information on nutrition can have a detrimental effect on people's health.

The title of this year's conference will be "Is information about nutrition and food supplements misplaced?”

At the conference, Icelandic experts will discuss in a professional way various facts regarding nutrition and dietary supplements based on evidence-based knowledge. The interpretation of research will be discussed, and why individual research, which even goes against accepted scientific knowledge, often has easier access to the media than other research. It will also discuss how information to the public can be misleading and often lead to misunderstandings that are difficult to reverse. The value of various dietary supplements, herbal remedies and natural substances will be discussed and whether their consumption is in fact healthy, who is most at risk of health damage due to the consumption of dietary supplements and which social groups can benefit from them. There will also be a discussion on the control of food supplements, the strong influence of the media and market forces, and on the relationship between health and health claims.

MNÍ hopes that Food Day will be informative for the general public, healthcare professionals as well as anyone involved in advice on diet, nutrition and health.

Fjöregg MNÍ 
In connection with Food Day, Fjöregg MNÍ is handed over. Fjöreggið is a great asset, awarded for a commendable initiative in the field of food production and human consumption. The grip is designed and built by Gleri in Bergvík and has been donated by the Confederation of Icelandic Industries since 1993.

An innovation will be tried this year that individuals who have done research in the field of nutrition, herbal medicines, natural substances and dietary supplements are invited to present their results on posters. Interested companies in the food, dietary supplements, herbal medicine and natural chemicals sectors are also invited to present their products at a presentation booth during coffee breaks for a small fee.

From the very beginning, MNÍ's Food Day has been well received by parties working on food, education and training, food production and food control. This year we expect to appeal to an even wider group due to the great health awareness and public interest in various health products and supplements. The program starts at 12: 00-17: 30. Here you can see the programs.

REGISTRATION

For further information, contact Fríða Rún Þórðardóttir, 898-8798, frida [at] lsh.is
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

The Icelandic Food and Nutrition Association
The Icelandic Food and Nutrition Association is a professional association of food scientists, nutritionists, nutrition consultants and other professions with a university degree in related disciplines. The aim of the association is, among other things, to promote the development of food companies and strengthen co-operation with them, promote increased education and the strengthening of scientific research in the field of food and nutrition, work on reforms in the nation's food and seek to influence legislation. The association's website, www.mni.is, is updated regularly and contains event calendars, news and various information, including articles that members have written in the media and presentations from the association's conferences in recent years. The magazine Matur er mannsins minn is also published with in-depth coverage of food, nutrition and the content of Food Day every year. The magazine has been distributed all over the country with Morgunblaðið and will continue to be so this year.

Topics of the previous MNÍ Food Days

1993 Food Production - Quality  
1994 Food industry and human consumption  
1995 Education for the food industry  
1996 Product development and value creation  
1997 Food in the New Century   
1998 Food and the environment       
1999 Offita   
2000 Safe foods       
2001 Food and politics 2009 Icelandic food production and currency creation
2002 Food Control
2003 Consumer trends
2004 Research
2005 Large kitchen and canteen
2006 Powerful food industry in constant development
2007 Who is responsible for and influences the nation's food choices and nutritional status?
2008 Icelandic food traditions and regional registers

News

Environmental pollution in Iceland - monitoring and research

The first conference on environmental pollution in Iceland will be held on Friday 25 February 2011 in the vicinity of Reykjavík.

The aim of the conference is to present the work and results of the main parties working to assess pollution in Iceland. Emphasis will be placed on all monitoring and research participants contributing to the conference.

The conference is divided into two parts. Before noon, emphasis will be placed on monitoring environmental pollution in Icelandic nature. After the lunch, there will be presentations of research on pollution in the air, uterus, soil, humans and animals. The arrangement of the conference is that in each section, several presentations from submitted abstracts will be selected, with an emphasis on monitoring on the one hand and research on the other. These presentations provide an overview of the state of affairs in Iceland today. There will also be a strong emphasis on posters where researchers are given the opportunity to present their projects. Conference guests will have the opportunity to familiarize themselves with the various monitoring and research projects on these posters and discuss these projects in person with researchers during coffee breaks and poster presentations. 

The deadline for submitting abstracts is 1 December 2010 environ@matis.is. A draft agenda can be found here.

The Planning Committee answers questions
Gunnar Steinn Jónsson Environment Agency, gunnar@ust.is
Hrönn Ólína Jörundsdóttir Matís, hronn.o.jorundsdottir@matis.is
Taru Lehtinen HÍ, tmk2@hi.is

Scientific Committee
Hrund Ólöf Andradóttir, UI
Taru Lehtinen, HÍ
Kristín Ólafsdóttir, UI
Gunnar Steinn Jónsson, Environment Agency (UST)
Hermann Sveinbjörnsson, Ministry for the Environment
Anna Kristín Daníelsdóttir, Matís
Helga Gunnlaugsdóttir, Matís
Hrönn Jörundsdóttir, Matís

EN