Jette Jakobsen

2019

The use of a plant enzyme for rapid and sensitive analysis of naturally-occurring folates in food by liquid chromatography-tandem mass spectrometry

Ložnjak, P., García-Salinas, C., Díaz de la Garza, R. I., Bysted, A. & Jakobsen, J., 2019, In: Journal of Chromatography A. 1594, p. 34-44

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Vitamin D in Wild and Farmed Atlantic Salmon (Salmo Salar)-What Do We Know?

Jakobsen, J., Smith, C., Bysted, A. & Cashman, K. D., 2019, In: Nutrients. 11, 5, 14 p., 982.

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2018

Effect of low energy diet for eight weeks to adults with overweight or obesity on folate, retinol, vitamin B₁₂, D and e status and the degree of inflammation: a post hoc analysis of a randomized intervention trial

Geiker, N. R. W., Veller, M., Kjoelbaek, L., Jakobsen, J., Ritz, C., Raben, A., Astrup, A., Lorenzen, J. K., Larsen, L. H. & Bügel, S., 10 Apr 2018, In: Nutrition and Metabolism. 15, 1, 9 p., 24.

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Enhancement of vitamin D in our food as a benefit for human but also for animal

Jakobsen, J., 2018. 1 p.

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Stability of vitamin D₃ and vitamin D₂ in oil, fish and mushrooms after household cooking

Ložnjak, P. & Jakobsen, J., 15 Jul 2018, In: Food Chemistry. 254, p. 144-149 6 p.

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The use of a plant enzyme provides fast, sensitive and reproducible LC-MS/MS method for folate analyses in food

Ložnjak, P., Jakobsen, J., Bysted, A., Diaz de la Garza, R. & Rychlik, M., 2018, 5th International Vitamin Conference - book of abstract. Sydney, Australia, p. 58-58 29

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The use of synthetic and natural vitamin D sources in pig diets to improve meat quality and vitamin D content

Duffy, S. K., Kelly, A. K., Rajauria, G., Jakobsen, J., Clarke, L. C., Monahan, F. J., Dowling, K. G., Hull, G., Galvin, K., Cashman, K. D., Hayes, A. & O'Doherty, J. V., 2018, In: Meat Science. 143, p. 60-68 9 p.

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Vitamin D-biofortified beef: A comparison of cholecalciferol with synthetic versus UVB-mushroom-derived ergosterol as feed source

Duffy, S. K., O'Doherty, J. V., Rajauria, G., Clarke, L. C., Hayes, A., Dowling, K. G., O'Grady, M. N., Kerry, J. P., Jakobsen, J., Cashman, K. D. & Kelly, A. K., 1 Aug 2018, In: Food Chemistry. 256, p. 18-24

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Vitamin D enhanced pork from pigs exposed to artificial UVB light in indoor facilities

Barnkob, L. L., Petersen, P. M., Nielsen, J. P. & Jakobsen, J., 2018, In: European Food Research and Technology. 245, 2, p. 411-418

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Vitamin D vitamers affect vitamin D status differently in young healthy males

Jakobsen, J., Wreford Andersen, E. A., Christensen, T., Andersen, R. & Bügel, S., 2018, In: Nutrients. 10, 1, 12 p.

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2017

Næringsindhold i kødudskæringer – danske grise

Jakobsen, J., Mikkelsen, A. Æ., Bysted, A. & Knuthsen, P., 2017, Søborg: DTU Fødevareinstituttet. 37 p.

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Physiological limit of the daily endogenous cholecalciferol synthesis from UV light in cattle

Hymøller, L., Jensen, S. K., Kaas, P. & Jakobsen, J., 2017, In: Journal of Animal Physiology and Animal Nutrition. 101, 2, p. 215-221 7 p.

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Vitamin D Status and Muscle Function Among Adolescent and Young Swimmers

Geiker, N. R. W., Larsen, R., Hansen, M., Jørgensen, N. R., Jakobsen, J., Hansen, B. S., Kristensen, L. M. & Bügel, S., 2017, In: International Journal of Sport Nutrition and Exercise Metabolism. 27, 5, p. 399-407

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Vitamin D stored in fat tissue during a 5-year intervention affects serum 25-hydroxyvitamin D levels the following year

Martinaityte, I., Kamycheva, E., Didriksen, A., Jakobsen, J. & Jorde, R., 2017, In: Endocrinology. 102, 10, p. 3731-3738 8 p.

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2016

Analysis of vitamin K-1 in fruits and vegetables using accelerated solvent extraction and liquid chromatography tandem mass spectrometry with atmospheric pressure chemical ionization

Jäpelt, R. B. & Jakobsen, J., 2016, In: Food Chemistry. 192, p. 402-408 7 p.

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Effects of vitamin D2-fortified bread v. supplementation with vitamin D2 or D3 on serum 25-hydroxyvitamin D metabolites: an 8-week randomised-controlled trial in young adult Finnish women

Itkonen, S. T., Skaffari, E., Saaristo, P., Saarnio, E. M., Erkkola, M., Jakobsen, J., Cashman, K. D. & Lamberg-Allardt, C., 2016, In: British Journal of Nutrition. 115, 7, p. 1232-1239 8 p.

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Impact on Vitamin D2, Vitamin D4 and Agaritine in Agaricus bisporus Mushrooms after Artificial and Natural Solar UV Light Exposure

Urbain, P., Valverde, J. & Jakobsen, J., 2016, In: Plant Foods for Human Nutrition. 71, 3, p. 314-321 8 p.

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Interlaboratory Trial for Measurement of Vitamin D and 25-Hydroxyvitamin D [25(OH)D] in Foods and a Dietary Supplement Using Liquid Chromatography-Mass Spectrometry

Roseland, J. M., Patterson, K. Y., Andrews, K. W., Phillips, M. M., Pehrsson, P. R., Dufresne, G. L., Jakobsen, J., Gusev, P. A., Savarala, S., Nguyen, Q. V., Makowski, A. J., Scheuerell, C. R., Larouche, G. P., Wise, S. A., Harnly, J. M., Williams, J. R., Betz, J. M. & Taylor, C. L., 2016, In: Journal of Agricultural and Food Chemistry. 64, 16, p. 3167-3175 9 p.

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Investigation of the effect of UV-LED exposure conditions on the production of vitamin D in pig skin

Barnkob, L. L., Argyraki, A., Petersen, P. M. & Jakobsen, J., 2016, In: Food Chemistry. 212, p. 386–391

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Phylloquinone content from wild green vegetables may contribute substantially to dietary intake

Bügel, S. G., Spagner, C., Poulsen, S. K., Jakobsen, J. & Astrup, A., 2016, In: Canadian Journal of Agriculture and Crops. 1, 2, p. 83-88 6 p.

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Stability of vitamin D in fish and mushrooms during different cooking procedures

Ložnjak, P. & Jakobsen, J., 2016. 1 p.

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Vitamin D3 and 25-hydroxyvitamin D3 in pork and their relationship to vitamin D status in pigs

Burild, A., Lauridsen, C., Faqir, N., Sommer, H. M. & Jakobsen, J., 2016, In: Journal of Nutritional Science. 5, 6 p., e3.

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Vitamin D-enhanced eggs are protective of wintertime serum 25-hydroxyvitamin D in a randomized controlled trial of adults

Hayes, A., Duffy, S., O'Grady, M., Jakobsen, J., Galvin, K., Teahan-Dillon, J., Kerry, J., Kelly, A., O'Doherty, J., Higgins, S., Seamans, K. M. & Cashman, K. D., 2016, In: AMERICAN JOURNAL OF CLINICAL NUTRITION. 104, 3, p. 629-637 9 p.

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Vitamin D in salmonids – wild and farmed, from head to tail – impact on dietary intake?

Jakobsen, J., Knuthsen, P. & Smith, C., 2016. 1 p.

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Vitaminer i 100 år

Jakobsen, J. & Knuthsen, P., 2016, In: E-artikel fra DTU Fødevareinstitutet. 2016, 3, p. 1-14

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2015

Association of body fat and vitamin D status and the effect of body fat on the response to vitamin D supplementation in Pakistani immigrants in Denmark

Grønborg, I. M., Lundby, M., Mølgaard, C., Jakobsen, J., Ovesen, L. & Andersen, R., 2015, In: European Journal of Clinical Nutrition. 69, 3, p. 405-407 3 p.

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Dose-Response Effect of Sunlight on Vitamin D2 Production in Agaricus bisporus Mushrooms

Urbain, P. & Jakobsen, J., 2015, In: Journal of Agricultural and Food Chemistry. 63, 37, p. 8156-8161 6 p.

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Evaluation of the Danish cultivated sugarkelp as possible future source of ingredients such as minerals and pigments

Holdt, S. L., Silva Marinho, G., Sloth, J. J., Safafar, H., Jakobsen, J. & Angelidaki, I., 2015, Book of Abstracts. DTU's Sustain Conference 2015. Lyngby: Technical University of Denmark, 1 p. F-5

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Nutrient composition of important fish species in Bangladesh and potential contribution to recommended nutrient intakes

Bogard, J. R., Thilsted, S. H., Marks, G. C., Wahab, M. A., Hossain, M. A. R., Jakobsen, J. & Stangoulis, J., 2015, In: Journal of Food Composition and Analysis. 42, p. 120-133 14 p.

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Short communication: Artificial ultraviolet B light exposure increases vitamin D levels in cow plasma and milk

Jakobsen, J., Jensen, S. K., Hymøller, L., Andersen, E. W., Kaas, P., Burild, A. & Jäpelt, R. B., 2015, In: Journal of Dairy Science. 98, 9, p. 6492-6498 7 p.

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Tissue content of vitamin D₃ and 25-hydroxy vitamin D3 in minipigs after cutaneous synthesis, supplementation and deprivation of vitamin D₃

Burild, A., Frandsen, H. L., Poulsen, M. & Jakobsen, J., 2015, In: Steroids. 98, p. 72-79 8 p.

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UVB-lys i stalden øger mælkens indhold af D-vitamin

Jakobsen, J., 2015, In: Ny Kvægforskning. 13, 5, p. 8-9

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Vitamin D₃increases in abdominal subcutaneous fat tissue after supplementation with vitamin D₃

Didriksen, A., Burild, A., Jakobsen, J., Fuskevag, O. M. & Jorde, R., 2015, In: European Journal of Endocrinology. 172, 3, p. 235-241 7 p.

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Vitamins A and E in liver, kidney, and whole blood of East Greenland polar bears sampled 1994–2008: reference values and temporal trends

Bechshoft, T., Sonne, C., Jakobsen, J., Rigét, F. F., Born, E. W., Letcher, R. J., Jenssen, B. M. & Dietz, R., 2015, In: Polar Biology. 39, 4, p. 743-754

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2014

Altered vitamin D status in liver tissue and blood plasma from Greenland sledge dogs (Canis familiaris) dietary exposed to organohalogen contaminated minke whale (Balaenoptera acuterostrata) blubber

Sonne, C., Kirkegaard, M., Jakobsen, J., Jenssen, B. M., Letcher, R. J. & Dietz, R., 2014, In: Ecotoxicology and Environmental Safety. 104, p. 403-408 6 p.

Research output: Contribution to journal › Journal article › Research › peer-review

Quantification of physiological levels of vitamin D₃ and 25-hydroxyvitamin D₃in porcine fat and liver in subgram sample sizes

Burild, A., Frandsen, H. L., Poulsen, M. & Jakobsen, J., 2014, In: Journal of Separation Science. 37, 19, p. 2659-2663 5 p.

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Simultaneous quantification of vitamin D₃, 25-hydroxyvitamin D-3 and 24,25-dihydroxyvitamin D₃ in human serum by LC-MS/MS

Burild, A., Frandsen, H. L. & Jakobsen, J., 2014, In: Scandinavian Journal of Clinical & Laboratory Investigation. 74, 5, p. 418-423 6 p.

Research output: Contribution to journal › Journal article › Research › peer-review

Stability of vitamin D in foodstuffs during cooking

Jakobsen, J. & Knuthsen, P., 2014, In: Food Chemistry. 148, p. 170-175

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Vitamin D Binding Protein Genotype Is Associated with Serum 25-Hydroxyvitamin D and PTH Concentrations, as Well as Bone Health in Children and Adolescents in Finland

Pekkinen, M., Saarnio, E., Viljakainen, H. T., Kokkonen, E., Jakobsen, J., Cashman, K., Makitie, O. & Lamberg-Allardt, C., 2014, In: PLOS ONE. 9, 1, 10 p., e87292.

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2013

Quantification of vitamin D3 and its hydroxylated metabolites in waxy leaf nightshade (Solanum glaucophyllum Desf.), tomato (Solanum lycopersicum L.) and bell pepper (Capsicum annuum L.)

Jäpelt, R. B., Silvestro, D., Smedsgaard, J., Jensen, P. E. & Jakobsen, J., 2013, In: Food Chemistry. 138, 2-3, p. 1206-1211

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Randomized controlled trial of the effects of vitamin D–fortified milk and bread on serum 25-hydroxyvitamin D concentrations in families in Denmark during winter: the VitmaD study^1-3

Madsen, K. H., Rasmussen, L. B., Andersen, R., Mølgaard, C., Jakobsen, J., Bjerrum, P. J., Andersen, E. W., Mejborn, H. & Tetens, I., 2013, In: American Journal of Clinical Nutrition. 98, 2, p. 374-381

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Seasonal changes in vitamin D status among Danish adolescent girls and elderly women: the influence of sun exposure and vitamin D intake.

Andersen, R., Brot, C., Jakobsen, J., Mejborn, H., Mølgaard, C., Skovgaard, L. T., Trolle, E., Tetens, I. & Ovesen, L., 2013, In: European Journal of Clinical Nutrition. 67, 3, p. 270-274 5 p.

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Vitamin D in plants: a review of occurrence, analysis, and biosynthesis.

Jäpelt, R. B. & Jakobsen, J., 2013, In: Frontiers in Plant Science. 4, p. 136 20 p.

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2012

Determinants of vitamin D status in a general population of Danish adults

Thuesen, B., Husemoen, L., Fenger, M., Jakobsen, J., Schwarz, P., Toft, U., Ovesen, L., Jørgensen, T. & Linneberg, A., 2012, In: Bone. 50, 3, p. 605-610

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Estimation of the dietary requirement for vitamin D: impact of season

Seamans, K. M., Kiely, M., Jakobsen, J., Lamberg-Allardt, C., Mølgaard, C. & Cashman, K. D., 2012, In: Proceedings of the Nutrition Society. 71, OCE2, p. E128 1 p.

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Evaluation of flavonoids and enterolactone in overnight urine as intake biomarkers of fruits, vegetables and beverages in the Inter99 cohort study using the method of triads.

Krogholm, K. S., Bysted, A., Brantsaeter, A. L., Jakobsen, J., Rasmussen, S. E., Kristoffersen, L. & Toft, U., 2012, In: British Journal of Nutrition. 108, 10, p. 1904-1912

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Increase of vitamin D2 by UV-B exposure during the growth phase of white button mushroom (Agaricus bisporus).

Kristensen, H., Rosenqvist, E. S. K. & Jakobsen, J., 2012, In: Food & Nutrition Research. 56, Suppl., p. 7114 7 p.

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Vitamin D

Jakobsen, J. & Jäpelt, R. B., 2012, Handbook of Analysis of Active Compounds in Functional Foods. Nollet, L. M. L. & Toldra, F. (eds.). CRC Press, p. 220-236

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Vitamin D3 in plants: effect of UVB exposure

Jäpelt, R. B., Silvestro, D., Smedsgaard, J., Jensen, P.-E. & Jakobsen, J., 2012. 1 p.

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Vitamins: Vital Compounds Of Life

Jakobsen, J., 2012, In: Asia Pacific Food Industry. 24, 7, p. 34-37

Research output: Contribution to journal › Journal article › Research

Jette Jakobsen

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