A convenience ready-to-reconstitute cutlet mix containing 30% fish protein powder was developed to improve the nutritional quality of the product. Consumer survey was based on the home use test (HUT) method. The acceptance of the fish cutlet mix (FCM) was studied using a 9-point hedonic scale ranging from 1 (extremely dislike) to 9 (extremely like). Product's characteristics and stability were studied during 6 months of storage at 27 ± 2 ° C. The FCM packed in a polyethylene bag and cardboard box was stable during the storage period. There were no changes in color, moisture gain and water activity, and TBARS values remained low. The FCM was accepted by the consumers in the study (n = 85). The average liking was high (7.5 ± 1.3) and it was influenced by frequency of fish and chicken consumption, educational level and household size. People who ate fish once a week liked the product more than other consumers. Also those with higher educational level and bigger household size. The results in this paper are important information for companies planning to develop ready-to-eat products fortified with fish proteins. The products could be means of increasing fish consumption in countries / areas where there is no tradition of consuming fresh or frozen fish.
Author: admin
Optimal packaging and storage conditions for fresh tilapia fillets were established by evaluating sensory and microbiological changes, as well as monitoring physicochemical properties. Nile tilapia (Oreochromis niloticus) farmed in recirculation aquaculture system was filleted, deskinned, and packaged in air and 50% CO2/ 50% N2 prior to chilling and superchilling storage at 1 ° C and −1 ° C. Sensory analysis of cooked samples revealed a shelf life of 13–15 days for air-packaged fillets during storage at 1 ° C and 20 days at −1 ° C. At the end of shelf life in air-packaged fillets, total viable counts (TVC) and pseudomonads counts reached log 8 colony-forming units (CFU) g−1. In 50% CO2/ 50% N2-packaged fillets, the lag phase and generation time of bacteria were extended and recorded counts were below the limit for consumption ( <log 8 CFU g−1) after 23 days of storage at both 1 ° C and −1 ° C. However, modified atmosphere (MA) packaging negatively affected color characteristics of the fillets soon after packaging (day 6). Color is an important indicator of tilapia fillets quality and a major factor in influencing retail purchase decisions. In view of that, air packaged at −1 ° C storage temperature was the optimal condition for fresh tilapia fillets. Total volatile basic nitrogen (TVB-N) and trimethylamine (TMA) were not good indicators of spoilage of tilapia fillets in this study.
A molecular biological analysis of Icelandic volcanic rocks of different compositions and glassiness revealed the presence of Actinobacteria as an abundant phylum. In outcrops of basaltic glass they were the dominant bacterial phylum. A diversity of Actinobacteria were cultured from the rocks on rock-agar plates showing that they are capable of growing on rock-derived nutrient sources and that many of the taxa identified by molecular methods are viable, potentially active members of the community. Laboratory batch-culture experiments using a Streptomyces isolate showed that it was capable of enhancing the release of major elements from volcanic rocks, including weathered basaltic glass, crystalline basalt and komatiite, when provided with a carbon source. Actinobacteria of a variety of other sub-orders were also capable of enhancing volcanic rock weathering, measured as Si release. However, most strains did not significantly increase the weathering of the silica-rich rock, obsidian. These data show that Actinobacteria can contribute to volcanic rock weathering and, therefore, the carbonate-silicate cycle. Given their ancient lineage, it is likely they have played a role in rock weathering for over two billion years.
Contact
Kolbrún Sveinsdóttir
Project Manager
kolbrun.sveinsdottir@matis.is
Experiments with the processing of sea urchin eggs
In this project, three experiments were performed with different goals. The aim of the first experiment was to examine the quality of sea urchin eggs and to test the rapid freezing of eggs with exports in mind. In the second experiment, branched dextrin sugars (Glico) and alginate were used to strengthen the outer layer of the eggs, the purpose was to find a substance that could replace alum to keep the eggs better from processing to the buyer. In the third experiment, the aim was to investigate whether it was possible to process sea urchin roe by heat treatment as a bulk product and also whether it was possible to separate the processing in time, ie. whether the pots could be opened and the roe packed in larger units so that they could be handled elsewhere than where the pots were opened.
In this project three experiments were undertaken. The goal in the first one was to explore the quality of gonads (sea urchin roes) and try to instant-freeze it for export. In the second experiment clusterdextrin and alginate was used to make the surface of the roes stronger. The purpose of that experiment was to find a substitute for alum for the gonads to keep their shape during the time from processing to buyer. In the third experiment the goal was to explore if it was possible to process gonads with heating in a large quantity and if it was possible to separate the stages of processing so tha the gonads could be collected and packed in one location, then further processed in another.
Report closed until 01.07.2016
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Few scientists conceal the importance of long-term research for society as a whole, whether for value creation or public health benefits, for example.
Matís looks to the long term in its research and there are already examples of shoots from Matís that have been established where the foundation was and are long-term research on marine algae. This requires a great deal of time and resourcefulness to be successful, and it is absolutely necessary to secure sufficient funds to cover the costs incurred.
Next Tuesday, June 4, Matís invites to a breakfast meeting at 08:30 at Hilton Reykjavik Nordica Hotel where dr. Gregory L. Yep, Director of Research and Development at PepsiCo. hold a lecture together with dr. Herði G. Kristinsson, Matís' research director.
Agenda
- 08:30 Sigurður Ingi Jóhannsson, Minister of Fisheries and Agriculture
- 08:40 Dr. Hörður G. Kristinsson, Matís' research director
Investment in knowledge based value creation / Investment for future growth - 09:00 Dr. Gregory L. Yep, Director of Research and Development, PepsiCo.
Food and Beverage Innovation / Innovation in the food industry - 09:40 Discussion
Board of Directors: Svana Helen Björnsdóttir, Chairman of the Board of the Confederation of Icelandic Industries
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PepsiCo. does not need to be introduced to anyone, as the company is best known for the Pepsi products themselves, which are sold in Iceland under the Ölgerðin brand. Few people know PepsiCo. manufactures, markets and sells many more products worldwide. Within the PepsiCo band. are product lines such as Tropicana, Quaker Oats, Frito-Lay and Gatorade. The company is the largest of its kind in the United States and the second largest in the world, after Nestlé, which is also in collaboration with Matís.
Every year, PepsiCo products are sold worldwide. to the value of 108 billion dollars, over 13 thousand billion Icelandic kronas, so it was clear that the company is huge and powerful.
Three parties are coming to Iceland from PepsiCo. but the most important should be mentioned dr. Gregory L. Yep, Assistant Director of Research and Development at the company. There is a lot to learn from a company like PepsiCo. and it will be interesting to hear the vision of Dr. Yep is researching and developing global food production, especially now that the debate on food security is raging.
The breakfast meeting will take place as previously stated at Hilton Reykjavik Nordica Hotel, Suðurlandsbraut 2, on Tuesday 4 June at 08: 30-10: 00.
The meeting is open to everyone and admission is free. It is recommended that people arrive on time and have a light breakfast before the meeting.
It is desirable that people register their participation pepsico@matis.is
More information here: www.matis.is/pepsico
Matís' director of research was recently invited to sit on the European Bioeconomy Council, but it is a great honor, not only for Matís but also for the Icelandic scientific community. Matís sincerely congratulates Herði.
When we talk about the European bioeconomy, we mean the food industry, feed production, forestry, fisheries, agriculture, aquaculture and the biochemical industry. European countries make great efforts to increase the co-operation of those who produce, manage and utilize organic resources or engage in other activities based on them. This refers to sectors such as food production, fisheries, agriculture, forestry, aquaculture and other related sectors.
It can be very difficult to shed light, in words, on what a bioeconomy is. It can therefore be a good idea to take pictures, as it is well known that a picture is 1000 words long.
Further information on the European bioeconomy and European countries' priorities in this regard can be found at the following websites:
The Nordic Innovation Center, Nordic Innovation, is hosting a conference in Harpa 5-6. June nk. to discuss the Nordic fisheries sector, its status and future.
The conference will discuss, among other things, how the Nordic fisheries sector can maintain its competitive advantage, but will also discuss the 14 projects that have been worked on on these issues under the umbrella of the Nordic Innovation Center.
More information can be found at Nordic Innovation website.
Next Tuesday 4 June. a high-ranking member of PepsiCo comes to Iceland to get acquainted with food production in Iceland, give a lecture and visit his partner, Matís.
PepsiCo does not need to be introduced to anyone, as the company is best known for the Pepsi products themselves, which are sold in Iceland under Ölgerðin's brand. Few people know, however, that PepsiCo manufactures, markets and sells many more products worldwide. PepsiCo's product lines include Tropicana, Quaker Oats, Frito-Lay and Gatorade. The company is the largest of its kind in the United States and the second largest in the world, after Nestlé, which is also in collaboration with Matís.
Every year, PepsiCo products are sold for 108 billion dollars, over 13 thousand billion Icelandic kronas, so it is clear that the company is huge and powerful.
Three parties are coming to Iceland from PepsiCo, the most important of which is dr. Gregory L. Yep, Assistant Director of Research and Development at the company. There is a lot to learn from a company like PepsiCo and it will be interesting to hear the vision of Dr. Yep is researching and developing global food production, especially now that the debate on food security is raging.
The breakfast meeting will take place at Hotel Hilton Nordica, Tuesday 4 June at 08: 30-10: 00.
The meeting is open to everyone and admission is free.
It is desirable that people register their participation pepsico@matis.is
For further information Steinar B. Aðalbjörnsson, marketing director of Matís.
Dr. Sveinn Margeirsson, CEO of Matís, will give a talk on Research and Realistic Solutions in the Food Industry and Biotechnology at the Master's Day of the University of Iceland.
In the engineering disciplines within the University of Iceland, the goal is to integrate innovation with postgraduate studies. On the Master's Day of the Institute of Engineering, the projects of master's students who are often participants in innovation projects in collaboration with powerful companies will be presented. The university's students thus contribute a lot to product and community development in Iceland.
Everyone is welcome to attend and learn about the source of innovation and high-tech solutions in engineering and computer science at the University of Iceland.
The Master's Day of the Engineering Institute will take place on Thursday 23 May 12:00 - 17:00 in the building VR-II. The program of the Master's Day can be found here.
A conference on environmental pollution in Iceland, water and water quality, was held on 22 March 2013 on the occasion of Water Day, and this conference is held with the support of the United Nations on 22 March each year.
Five institutions, the Ministry of the Environment and the University of Iceland were involved in the preparation of the conference.
The conference was well attended by scholars as well as a very good reputation for all presentations and presentations that reflected both the ambition and professionalism of those who were responsible for them. In view of the limited number of seats at the conference and fewer people attending than wanted to, the organizing committee considered it appropriate to invite those scholars who spoke at the conference and saw themselves able to publish their papers on Matís' website. The lecture can now be accessed below:
- Protection of water quality in Reykjavík
Árný Sigurðardóttir, Reykjavík Health Inspectorate - Do Icelandic coniferous forests lead to acidification of stream water?
Bjarni D. Sigurðsson, Agricultural University of Iceland (LBHÍ) - Chemical content in wastewater from arable land
Björn Þorsteinsson, Arngrímur Thorlacius, Þorsteinn Guðmundsson, LBHÍ - Pollution off the coast of Iceland
Erla Sturludóttir et al., University of Iceland and Matís - Concentration of dissolved substances in the inflow and outflow of Þingvallavatn
Eydís Salóme Eiríksdóttir, Sigurður Reynir Gíslason, Institute of Earth Sciences, University - Water protection and water quality
Hólmfríður Sigurðardóttir, Orkuveita Reykjavíkur - The microflora of Elliðavatn and Elliðaá
Kristín Elísa Guðmundsdóttir, University of Iceland and Matís
Nine presentations were made at the conference and in addition, research was presented on 11 posters. In the presentations, it was stated, among other things, that there is considerable pressure on groundwater in many places and that little attention is often paid to it when projects are planned. The natural content of substances in water in Iceland was discussed. It was found that the chemical concentration in drinking water is generally low. Measurements of chemical concentrations in natural water systems were introduced, and the natural content of substances in water in Iceland is usually low and in most places we live very well in terms of quality and control. A study of the microflora of Elliðavatn and rivers was also reported, as well as indications of increased nitrogen in Þingvallavatn. Research on the drainage of arable land and from coniferous forests was presented, and measurements of mercury in trout in lakes led to very interesting results. Finally, the results of monitoring pollution in the sea and off the coast of Iceland over the last 20 years were presented. There were many other interesting presentations at the conference and we encourage everyone to familiarize themselves with the talk.
On behalf of the conference's organizing committee and scientific committee, we would like to thank all those who took part in the conference. Both the scholars who contributed to the conference with presentations and presentations as well as all the individuals who attended and studied the issues, took part in the discussion and gave it color and life.
For further information Sophie Jensen at Matís.