Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2022
Abstract
Acrylamide has become an important measure when looking at profitability and sustainability in the potato processing industry. Acrylamide is a possible carcinogenic which is formed in starchy foods during high-temperature cooking processes. Crisps and French fries made from processing potatoes are consumed by people of all ages and therefore the pressure on the industry has been large to reduce the acrylamide levels. In the ongoing project POTETFRIT (2019-2022), the aim is to reduce acrylamide content and improve product quality, profitability and sustainability in the production of Norwegian crisps and French fries. The aim will be reached through new knowledge about the interaction between potato quality and storage conditions. The effect of different temperature strategies including cold storage (5 ⁰C) and reconditioning at 15 ⁰C was tested in eight different varieties (Lady Claire, Kiebitz, Pirol, Lady Britta, Peik, Innovator, Zorba and Gullflaks). The importance of elevated CO2 levels in the potato store on product quality and acrylamide content, was studied in the same potato varieties and in tubers with different maturity levels. Storage conditions in 29 commercial potato stores was also studied, with attention to temperature conditions and CO2 levels in different stages of the storage season. The effect of different ventilation strategies was also studied. So far results show that the varieties L. Claire, Kiebitz and Gullflaks can be stored at low temperature levels without developing high sugar and acrylamide levels and dark fry colour and at the same time keeping sprouting at a low level. In the CO2 trials, none of the varieties tested showed elevated sugar and acrylamide levels when exposed to high CO2 levels (15000 ppm) and also in the commercial stores there was no correlation between high CO2 and high sugar levels.
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Authors
Darius KviklysAbstract
Nutrient uptake and transport depend on the root system of a tree. Various apple rootstock genotypes may interact fruit tree nutrition. In 2017, two multi-location apple rootstock trials were established at 16 sites in 12 European countries. The evaluations are performed by members of the EUFRIN (European Fruit Research Institute Network) Apple & Pear Variety & Rootstock Testing Working Group. Following rootstocks are included in the tests: G.11, G.41, G.202 and G.935 (US), EM_01, EM_02, EM_03, EM_04, EM_05 and EM_06 (UK), 62-396-B10® (Russia), P 67 (Poland), NZ-A, NZ-B, NZ-C and NZ-D (New Zealand) and Cepiland-Pajam®2 as control. The effect of rootstocks on the mineral content of leaf and fruit was studied at the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry in 2019–2020. The leaf and fruit mineral concentration of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and leaf mineral content of copper (Cu), zinc (Zn), iron (Fe), manganese (Mn) and boron (B) were measured. Significant rootstock effect was established on leaf P, Mg, Zn, Mn, B, and fruit Ca and Mg content. Current research reveals differences among rootstocks and their capacity to absorb separate minerals and enables creation of rootstock specific nutrition management.