Research output per year
Research output per year
Personal profile
Profile
My contribution to nutrition research is the assessment of the content of vitamin active compounds in foods and biological sample by use of validated, specific, chemical method, which preferable are accredited by ISO17025.
My interest covers biological variability, changes during processing and storage, and assessment of the relative biological activity/bioavailability of each of the vitamins active compounds e.g. vitamin D2 and vitamin D3.
I focus on collaboration on optimising content of vitamins in our food, and investigation on optimal dietary intake of vitamins in relation to impact of vitamin status on risk of diseases.
In the last 10 years, the focus has been on vitamin D, and the low dietary intake of vitamin D in Denmark and many other European countries has initiated the research field of to fight the low dietary intake by biofortication of food items
Research areas
My contribution to nutrition research is the assessment of the content of vitamin active compounds in foods and biological sample by use of validated, specific, chemical method, which preferable are accredited by ISO17025.
My interest covers biological variability, changes during processing and storage, and assessment of the relative biological activity/bioavailability of each of the vitamins active compounds e.g. vitamin D2 and vitamin D3.
I focus on collaboration on optimising content of vitamins in our food, and investigation on optimal dietary intake of vitamins in relation to impact of vitamin status on risk of diseases.
In the last 10 years, the focus has been on vitamin D, and the low dietary intake of vitamin D in Denmark and many other European countries has initiated the research field of to fight the low dietary intake by biofortication of food items.
Expertise related to UN Sustainable Devlopment Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Chemical Engineering, Technical University of Denmark
1976 → 1981
External positions
National Food Institute, Technical University of Denmark, Senior Scientist
2004 → …
Member of CEN, WG9, Vitamins and caratonids – Standardisation of analytical methods for vitamins and carotenoids in foods and supplements.
1994 → …
Danish Veterinary and Food Administration, Mørkhøj, Senior Research Chemist
1990 → 2004
Danish Veterinary and Food Administration, Frederiksberg, Chemist
1985 → 1990
Danish Veterinary and Food Administration, Esbjerg, Chemist
1982 → 1985
School for Laboratory Technician, Copenhagen, Teacher
… → 1982
Keywords
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Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Natural vitamin D in foods: To what degree does 25‐hydroxyvitamin D contribute to vitamin D activity of food?
Jakobsen, J. & Christensen, T., 2021, In: JBMR Plus. 5, 1, e10453.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile35 Downloads (Pure) -
Quantification of vitamin D3 and 25-hydroxyvitamin D3 in food – The impact of eluent additives and labelled internal standards on matrix effects in LC-MS/MS analysis
Ložnjak Švarc, P., Barnkob, L. L. & Jakobsen, J., 2021, In: Food Chemistry. 357, 129588.Research output: Contribution to journal › Journal article › Research › peer-review
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Vitamin K (phylloquinone and menaquinones) in foods - Optimisation of extraction, clean-up and LC-ESI-MS/MS method for quantification
Jensen, M. B., Ložnjak Švarc, P. & Jakobsen, J., 2021, In: Food Chemistry. 345, 9 p., 128835.Research output: Contribution to journal › Journal article › Research › peer-review
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Causes of vitamin K deficiency in patients on haemodialysis
Wikstrøm, S., Lentz, K. A., Hansen, D., Rasmussen, L. M., Jakobsen, J., Hansen, H. P. & Andersen, J. R., 2020, In: Nutrients. 12, 9, 8 p., 2513.Research output: Contribution to journal › Journal article › peer-review
Open AccessFile25 Downloads (Pure) -
Collaborative study - Quantification of total folate in food using an efficient single-enzyme extraction combined with LC-MS/MS
Ložnjak Švarc, P., Oveland, E., Strandler, H. S., Kariluoto, S., Campos-Giménez, E., Ivarsen, E., Malaviole, I., Motta, C., Rychlik, M., Striegel, L. & Jakobsen, J., 2020, In: Food Chemistry. 333, 10 p., 127447.Research output: Contribution to journal › Journal article › Research › peer-review
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Safe UV-pasteurization of milk
Espekvist, K., Hansen, L. T., Hansen, T. B. & Jakobsen, J.
01/06/2021 → 31/05/2024
Project: PhD
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Vitamin active compounds - in vitro models to assess differences (VITAMODELS)
Jensen, M. B., Jakobsen, J., Biltoft-Jensen, A. P., Netzel, M. & Sultanbawa, Y.
01/12/2018 → 30/11/2021
Project: PhD
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Novel microalgae based ingredients
Ljubic, A., Jacobsen, C., Bysted, A., Holdt, S. L., Jakobsen, J., Hobley, T. J., Barbosa, M. & Nielsen, S. L.
Technical University of Denmark
01/12/2017 → 11/02/2021
Project: PhD
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PigLED: PigLED - Optimal lighting system for pigs
Jakobsen, J., Bang-Berthelsen, I. & Petersen, P. M.
01/01/2017 → 30/09/2020
Project: Research
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Quantification of folate metabolites in food and potential biofortification strategies for future food products
Ložnjak Švarc, P., Jakobsen, J., Bysted, A., Biltoft-Jensen, A. P., Piironen, V. & Nexø, E.
01/11/2015 → 19/06/2019
Project: PhD
Activities
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6th International Vitamin Conference
Jette Jakobsen (Chairman)
10 Aug 2018 → 25 Sep 2020Activity: Attending an event › Participating in or organising a conference
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Vitamin D in food
Jette Jakobsen (Speaker)
18 May 2018Activity: Talks and presentations › Conference presentations
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5th International Vitamin Conference
Jette Jakobsen (Chairman)
8 Aug 2018 → 10 Aug 2018Activity: Attending an event › Participating in or organising a conference
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Enhancement of vitamin D in our food as a benefit for human but also for animal
Jette Jakobsen (Invited speaker)
9 Aug 2018Activity: Talks and presentations › Conference presentations
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Quantification of vitamin D in foodstuffs—challenges in the replacement ofPDA-detector to MS/MS-detector
Jette Jakobsen (Invited speaker)
15 Mar 2018Activity: Talks and presentations › Conference presentations
Press / Media
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Prutter du af at spise grønt? Få svaret på 11 hårdnakkede myter om grøntsager
Sisse Fagt, Bodil Hamborg Jensen, Tine Rask Licht & Jette Jakobsen
25/06/2020
1 item of Media coverage
Press/Media: Press / Media
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Hvordan bevares mikronæringsstoffer bedst ved opvarmning af grøntsager?
22/09/2016
1 Media contribution
Press/Media: Press / Media