Projects / Programmes source: ARRS

The influence of UV - B radiation to antioxidant content and distribution in cultivated plants

Research activity

Code Science Field Subfield
7.00.00  Interdisciplinary research     

Code Science Field
P300  Natural sciences and mathematics  Analytical chemistry 
P395  Natural sciences and mathematics  Organometallic chemistry 
B191  Biomedical sciences  Plant biochemistry 
B390  Biomedical sciences  Phytotechny, horticulture, crop protection, phytopathology 
cultivated plants, antioxidants, selenium, rutin, UV-B radiation
Evaluation (rules)
source: COBISS
Researchers (8)
no. Code Name and surname Research area Role Period No. of publications
1.  15122  PhD Mateja Germ  Biology  Researcher  2007 - 2009  566 
2.  14082  PhD Radojko Jaćimović  Physics  Researcher  2007 - 2009  708 
3.  13010  PhD Nina Kacjan Maršić  Plant production  Researcher  2009  348 
4.  00950  PhD Ivan Kreft  Plant production  Researcher  2007 - 2009  892 
5.  18287  PhD Darja Mazej  Chemistry  Researcher  2007 - 2009  353 
6.  05964  PhD Jože Osvald  Plant production  Researcher  2007 - 2009  464 
7.  01873  PhD Vekoslava Stibilj  Chemistry  Principal Researcher  2007 - 2009  686 
8.  17762  PhD Dragan Žnidarčič  Interdisciplinary research  Researcher  2007 - 2009  479 
Organisations (3)
no. Code Research organisation City Registration number No. of publications
1.  0105  National Institute of Biology  Ljubljana  5055784  13,213 
2.  0106  Jožef Stefan Institute  Ljubljana  5051606000  85,580 
3.  0481  University of Ljubljana, Biotechnical Faculty  Ljubljana  1626914  64,492 
The increase of UV-B radiation on the Earth surface due to thinning of ozone layer, may have negative effects on organisms, including cultural plants. Substances like flavonoids and selenium scavenge free radicals, which are induced by UV-B radiation. Studied model plants (potato, cabbage, oats, buckwheat, pumpkins and chicory) will be exposed to different levels of UV-B radiation and afterwards the amount of UV absorbing compounds (carotenoids, flavonoids) as well as selenium will be measured to estimate antioxidative status of cultivated plants.
Significance for science
The results of the project are: - the importance of purity of encyme used for Se speciation. We were the first who varn the scientific comunity on this problem. - the plant encymatic extracts have to be check to Se species stability, -mass balance is very important, -produces Se enriched plants but not contaminate environment -seeds contain SeMet, leaves and steam contain anorganic Sei -Se (in appropriate concentration) protects plants before UV-B radiation It was investigated the interaction of polyphenolic substances, proteins and Se in food materials of plant origin. Metabolic factors were revealed as well. Results were published in major international scientific journals from the field of chemistry, agriculture and food science (see COBISS), a part of results is submitted for publication.
Significance for the country
We developed and optimised the method for determination Se species in plants and we are capable to determine Se species in Se food supplements which overload slovene market. Investigation in Se enriched plants open new possibilities for high quality functional food products in Slovenia. Several new functional nutritional products were already designed in Slovenia, based on the results of this investigation. Some new products are already in Slovenian market, and further new functional food products are expected, based on the results of this project.
Most important scientific results Annual report 2008, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2008, final report, complete report on dLib.si
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