Skýrslur

Mælingar á eiginleikum folaldakjöts

Útgefið:

03/07/2019

Höfundar:

Eva Margrét Jónudóttir, Guðjón Þorkelsson, Aðalheiður Ólafsdóttir, Óli Þór Hilmarsson, Kolbrún Sveinsdóttir

Styrkt af:

Framleiðnisjóður landbúnaðarins

Tengiliður

Eva Margrét Jónudóttir

Verkefnastjóri

evamargret@matis.is

Mælingar á eiginleikum folaldakjöts

Sala hestakjöts innanlands er aðeins um helmingur framleiðslu og á meðan kjötneysla fer vaxandi með auknum hagvexti á það ekki við hestakjöt. Hross eru alla jafna ekki ræktuð sérstaklega til kjötframleiðslu heldur er kjötið hliðarafurð reiðmennskuræktar og lyfjaframleiðslu úr merarblóði. Vinsældir reiðmennsku og framleiðsla lyfja munu ólíklega koma til með að dragast saman næstu árin og því er full ástæða til þess að gera hestakjöti hátt undir höfði og koma þannig í veg fyrir frekari afsetningarvandamál í framtíðinni. Hestakjöt hefur verið í markaðsherferð erlendis undanfarin misseri, þá sérstaklega í Asíu en upplýsingar skortir um eiginleika þess. Meginmarkmið verkefnisins var að safna saman og koma á framfæri upplýsingum sem styðja við og greiða leið markaðstarfs og sölu á hestakjöti. Afurðir af þremur folöldum sem slátrað var 03.12.18 voru rannsakaðar. Hitasírita var komið fyrir í kæli og innst í þykkustu vöðvum skrokkanna. Sýrustigssírita var stungið í hryggvöðva þeirra eftir slátrun. Allir skrokkar voru úrbeinaðir í sláturhúsinu á Hellu og vigtaðir eftir skiptingu í vöðva, vinnsluefni, bein og fitu. Hverjum vöðva var skipt upp í 4 hluta. Sá fyrsti fór í litmælingu, annar í efnamælingu, þriðji í skynmat og sá fjórði í skurðkraftsmælingu og mælingu á suðurýrnun. Þar að auki voru send sýni til greininga á gerlafjölda sem og Listeríu bakteríum. Það tók um 17 klst fyrir sýrustig að falla í hryggvöðvum eftir slátrun og það tók um sólahring á kæli eftir slátrun fyrir skrokk að ná fullkomnum umhverfishita við 5°C. Mælingar á elduðum vöðvum staðfesta að folaldakjöt er meyrt kjöt. Röð eftir vaxandi skurðkrafti (seigju) er: Lundir < kúlottusteik < bógvöðvi < mjaðmasteik < læristunga < hryggvöðvi < klumpur < ytrilæri < brisket < innanlærisvöðvi. Suðurýrnun við eldun var um 25%. Listería moinocytogenes mældist aldrei og öll sýni voru undir viðmiðum um örverufjölda. Þráabragð var almennt lítið eða ekki mælanlegt en eykst hlutfallslega meira með hækkandi inannvöðvafitu þegar líður á geymslutíma. Samkvæmt litmælingum er folaldakjöt svipað ljóst en aðeins rauðara og gulara en lambakjöt og blæbrigðamunur var milli vöðva. Eftir 14 daga í geymslu varð kjötið örlítið rauðara/gulara. Vöðvar sem nýtast sem heilir vöðvar af skrokk eru ekki nema 34,7% af heildarfallþunga. Vinnsluefni er 28,9% sem segir okkur að hlutfall þess sem er að jafnaði verið að nýta af fallþunganum er 63,6%. Hestakjöt hafi allt til brunns að bera til að vera selt sem hágæða kjötvara og ekkert ætti því að vera til fyrirstöðu að nýta betur þessa dýrmætu auðlind.

The main objective was to gather and disseminate information that will support marketing of equine meat. Meat and offals from three foals were analysed. Temperature was monitored in chiller and carcasses after slaughter and pH loggers were placed in the loin muscle (m. longissimus dorsi). Yield was measured by cutting the carcasses into muscles, triminngs, fat and bone the day after slaughter. Each muscle was cut into 4 parts.The first was used for measuring CIELAB L, a, b* colour. The second was analysed for nutritional value. The third was cooked and analysed for sensory properties and the fourth cooked and analysed for Warner Bratzler shear force and cooking loss. In addition, samples were submitted for analysis of bacterial numbers as well as Listeria bacteria. It took about 17 hours for the pH to drop in the loin muscles after slaughter and it took about 24 hours for the carcasses to reach chiller temperature of 5 ° C. Shear force analysis confirmed the tenderness of foal meat. Cooking loss was about 25%. Listeria monocytogenes was not detected, and all samples were within acceptable limits for microbial counts. Generally, rancid flavour was little or not detected but increased proportionally with increasing intramuscular fat and storage time. Foal meat is similar as or lighter but more reddish and yellow than lamb met and there are slight differences between muscles. After 14 days of storage, the meat became slightly redder / yellower. Whole muscles were only 34.7% of carcass weight. Meat trimmings were 28.9%. The total yield was therefore 63,5%. Foal meat is a high-quality meat product and there are opportunities to market as such, and also to develop new products from the trimmings.

Skoða skýrslu

Skýrslur

Nordic Centre of Excellence Network in Fishmeal and Fish oil

Útgefið:

11/06/2019

Höfundar:

Marvin Ingi Einarsson, Alfred Jokumsen, Anne Mette Bæk, Charlotte Jacobsen, Søren Anker Pedersen, Tor Andreas Samuelsen, Jóhannes Pálsson, Odd Eliasen, Ola Flesland

Styrkt af:

AG-fund, EUfishmeal

Nordic Centre of Excellence Network in Fishmeal and Fish oil

The main objective of this work was to summarise current knowledge on fishmeal and fish oil as well as identify the research needs and create a roadmap for future industry-driven research. The main conclusion was that the quality of raw material, fishmeal and – oil are not yet well defined. The real focus by the industry has mainly been limited to nutrients, such as proteins and fats and other components that makeup fishmeal. There has been less focus on the health benefits of dietary contents of fishmeal and –oil and the relationship between processing methods and the nutritional and technical properties of fishmeal. In addition, to proactively strengthen the market position and competitiveness, it is crucial for the industry to achieve a common understanding of the needs of their customers in line with a clear profile of the benefits of their products. A communication strategy as well as a research strategy is needed.

Finally, the identity of the industry needs to be clear and transparent to promote a story about the industry to provide a clear and positive image of the industry to be communicated to the society. This means, that a communication strategy as well as a research strategy must be established, as there is a lack of communication along the value chain from the industry to the consumers. There is still a lack of understanding by the consumers of why fishmeal is produced, the reasons must be communicated in such a way that it reaches the average consumer.

The industry members are interested in moving forward to sustain the future growth of the industry. Fishmeal and fish oil production has been prosperous for a very long time, but to remain so, cooperation among all stakeholders is crucial for continued progress.

Skoða skýrslu

Skýrslur

Actions for sustainable bioeconomy in the West Nordic region

Útgefið:

01/06/2019

Höfundar:

Þóra Valsdóttir, Bryndís Björnsdóttir

Styrkt af:

Nordic Atlantic Cooperation (NORA)

Tengiliður

Þóra Valsdóttir

Verkefnastjóri

thora.valsdottir@matis.is

Actions for sustainable bioeconomy in the West Nordic region

The purpose of the West Nordic Bioeconomy Panel is to identify common key issues of importance for the West Nordic region, identify opportunities, advice industry, governments and the public, as well as promote common key issues and policies. The West Nordic Region includes the Faroe Islands, Greenland and Iceland. The goal is to suggest a sound strategy for the West Nordic region in order to maintain and strengthen its bioeconomy, as well as to communicate that strategy. The West Nordic Bioeconomy Panel was identified as an action in the final report “Future Opportunities for Bioeconomy in the West Nordic Countries” (Smáradóttir et al, 2015). The work of the West Nordic Bioeconomy panel is being funded by the Nordic Atlantic Cooperation (NORA). Further information can be found at www.wnbioeconomy.com. This document outlines the following identified five strategic priorities and proposed related key actions by the West Nordic Bioeconomy panel and stakeholder platforms, with the aim of enhancing innovation and long term sustainable value creation within the regions bioeconomy.

Skoða skýrslu

Skýrslur

Próteinríkt mjöl úr kjúklingafjöðrum í fiskeldisfóður

Útgefið:

31/05/2019

Höfundar:

Ragnheiður Sveinþórsdóttir, Margrét Geirsdóttir, Jón Árnason

Styrkt af:

AVS Rannsóknasjóður í sjávarútvegi, Framleiðnisjóður landbúnaðarins og Samtök Sunnlenskra Sveitarfélaga (SASS)

Tengiliður

Margrét Geirsdóttir

Verkefnastjóri

mg@matis.is

Próteinríkt mjöl úr kjúklingafjöðrum í fiskeldisfóður

Til að nýta kjúklingafjaðrir í fjaðurmjöl eru próteinin rofin til að auka meltanleika mjölsins með hliðsjón af þörfum eldisdýra. Í þessu verkefni var unnið að þróun fjaðurmjöls með vatnsrofi. Efnainnihald fjaðurmjölsins var skoðað auk amínósýrusamsetningar og mjöl úr íslenskum kjúklingafjöðrum skoðað í samanburði við aðrar tilraunir þar sem fjaðurmjöl hefur verið greint. Fjaðurmjöl hefur 80% próteininnihald og er meltanleiki þess sambærilegur og því sem þekkist í fiskmjöli. Fjaðurmjöl hefur lengi verið notað í fóður í Norður og Suður Ameríku og hefur nú á seinustu árum verið að riðja sér til rúms sem ódýr próteingjafi fyrir eldisdýr í Evrópu.

In order to utilize chicken feathers as feather meal nutritious for animal cultivation, proteins are degraded to make the feather meal digestible for farming animals. In this project feather meal from chicken feathers was hydrolysed to increase the digestibility. The chemical content of the feather meal was examined as well as amino acids composition. The Icelandic feather meal was also compared to results of researches conducted elsewhere on feather meal. Feather meal has an 80% protein content and its digestibility is comparable to fish meal. Feather meal has been used for a long time in feed in North and South America and has in recent years been pushing itself as a cheap protein source for farming animals in Europe.

Skoða skýrslu

Ritrýndar greinar

Variations in polyphenol and heavy metal contents of wild-harvested and cultivated seaweed bulk biomass: Health risk assessment and implication for food applications

Ritrýndar greinar

Arsenolipids are not uniformly distributed within two brown macroalgalspecies Saccharina latissima and Alaria esculenta

Ritrýndar greinar

Selective and fast screening method for inorganic arsenic in seaweed using hydride generation inductively coupled plasma mass spectrometry (HG-ICPMS)

A method for the determination of inorganic arsenic (iAs) without chromatography using hydride generation — inductively coupled plasma mass spectrometry (HG-ICPMS) is applied to 40 brown macroalgae samples (Fucus vesiculosusAscophyllum nodosumSaccharina latissima). Determining iAs in seaweed matrices is a challenge and, in this study, using 2% HNO3 and 3% H2O2 extraction media the HG-ICPMS outperformed the most commonly used method of HPLC-ICPMS for the determination of iAs in the seaweed samples. There was a good comparison between the simple and fast HG-ICPMS and the more accurate but time-consuming HPLC-HG-ICPMS. Linear regression showed reasonable linearity (R2 of 0.82), with a slope slightly higher than 1 (1.15 ± 0.09) and intercept 0.03 ± 0.01 when comparing the concentrations of iAs determined with the two methods. Hence there is a minor overestimation of iAs with HG compared to the HPLC-HG, however, the method is well suited as a quick screening method. The iAs concentration was below 1% of total arsenic concentration for all the seaweed samples irrespective of using HG-ICPMS or HPLC-HG-ICPMS.

Hlekkur að grein.

Ritrýndar greinar

Validation and inter-laboratory study of selective hydride generation for fastscreening of inorganic arsenic in seafood

Ritrýndar greinar

Marine sources offuran fatty acids

Ritrýndar greinar

Stabilization of Fish Oil-Loaded Electrosprayed Capsules with Seaweed and Commercial NaturalAntioxidants: Effect on the Oxidative Stability of Capsule-Enriched Mayonnaise

IS