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Projects / Programmes source: ARRS

Navadno volčje jabolko (Physalis alkekengi L.) kot surovina za izdelavo rastlinskega dodatka z zeaksantinom h krmilom kokoši nesnic (Slovene)

Research activity

Code Science Field Subfield
4.03.01  Biotechnical sciences  Plant production  Agricultural plants 

Code Science Field
4.05  Agricultural and Veterinary Sciences  Other agricultural sciences 
Evaluation (rules)
source: COBISS
Researchers (17)
no. Code Name and surname Research area Role Period No. of publications
1.  29488  PhD Alen Albreht  Chemistry  Researcher  2011 - 2014  123 
2.  33204  PhD Lučka Brulc  Plant production  Junior researcher  2011 - 2014  16 
3.  15561  PhD Matjaž Červek  Animal production  Researcher  2011 - 2014  82 
4.  07493  MSc Nataša Ferant  Biology  Researcher  2011 - 2014  277 
5.  12209  PhD Mihael Gajster  Animal production  Researcher  2011 - 2014  67 
6.  28562  PhD Vesna Glavnik  Plant production  Researcher  2011 - 2014  159 
7.  19948  Justina Jenko Bernot    Technician  2011 - 2014 
8.  36423  PhD Eva Kranjc  Pharmacy  Junior researcher  2013 - 2014  30 
9.  19949  Zdenka Mauser    Technician  2011 - 2014 
10.  28673  Rok Novak  Animal production  Researcher  2011 - 2014  10 
11.  23196  Monika Oset Luskar  Plant production  Researcher  2011 - 2014  164 
12.  28256  Nina Pozvek  Chemistry  Researcher  2011 - 2014 
13.  17266  Mateja Puklavec    Technician  2011 - 2014  22 
14.  15461  PhD Breda Simonovska  Plant production  Principal Researcher  2011 - 2014  244 
15.  19947  Helena Sodnikar    Technician  2011 - 2014 
16.  10085  MSc Mateja Vendramin Pintar  Chemistry  Researcher  2011 - 2014  15 
17.  11395  PhD Irena Vovk  Chemistry  Researcher  2011 - 2014  539 
Organisations (3)
no. Code Research organisation City Registration number No. of publications
1.  0104  National Institute of Chemistry  Ljubljana  5051592000  20,367 
2.  0416  Slovenian Institute of Hop Research and Brewing  Žalec  5051762000  4,027 
3.  0489  EMONA - Nutrition Research & Development Department  Ljubljana  5326974000  116 
Significance for science
Different plants had an immense importance in the development of human civilisation. They always have been the matter of intensive scientific investigations. In the project, the plant Physalis alkekengi was studied as a rich source of carotenoids zeaxanthin and ß-cryptoxanthin, which are deficitary in the modern human diet. Both carotenoids present in the berry and calix of these plant accumulated in the yolks of laying hens after addition of the ground plant material or preparations by its chemical processing, to the feeding. We investigated the relationship between the content of both carotenoids in the feeding and their content in the yolks. This was the first such study in the world concerning zeaxanthin and ß-cryptoxanthin. In the frame of the project we contributed to the development of analytical and preparative methods in chemistry, especially based on chromatographic and spectroscopic techniques, a part of these results was already published in a journal with a relatively high impact factor. In different parts of the plant Physalis alkekengi L, which is a known medicinal plant especially in China, many other interesting secondary metabolites are present, needing further research important for the science.
Significance for the country
The main result of the project is a new functional food – a chicken egg containing natural zeaxanthin and ß-cryptoxanthin. These are two carotenoids which are important for the human health. The new functional food was obtained by addition of milled berries and husks from the ornamental plant Chinese lantern (Physalis alkekengi L.), or preparations of chemically modified plant material, to the chicken feed. A study on 30 chickens provided a correlation between the dose of aforementioned carotenoids in the chicken feed and their content in egg yolks, which is a helpful information for subsequent studies. The new use of P. alkekengi opens new possibilities in agriculture to produce a new alternative culture. A similar venture was already observed with Tagetes erecta, which is cultivated for the needs of related carotenoid lutein. The acquired knowledge could form the foundations for the formation of a company, which would specialize in zeaxanthin and ß-cryptoxanthin enriched egg production. The products could readily be launched on the Slovenian market (e.g. healthy food shops). We also analysed eggs from Slovenian market for carotenoids and we established that manufacturers of eggs from ecological breeding do not realize the importance of carotenoids in chicken feed and by that, they unintentionally wrong the consumers. Therefore, these results should be of interest in the field of regulation of quality assurance for eggs in Slovenia. We acquired knowledge on isolation of zeaxanthin and ß-cryptoxanthin from plant material, because both compounds have additional purpose of use in food and pharmaceutical industry. The development of food additives and food supplements requires only a fragment of a financial investment usually associated with the development and launch of a drug, which makes it absorbing also for Slovenia.
Most important scientific results Annual report 2011, 2013, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2011, 2012, 2013, final report, complete report on dLib.si
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