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Projects / Programmes source: ARIS

Evaluation of quality and safety parameters of vegetables produced on different systems in Slovenia and abroad with aim to establish national quality scheme for vegetables

Research activity

Code Science Field Subfield
4.03.07  Biotechnical sciences  Plant production  Technology of vegetal origin food 

Code Science Field
B191  Biomedical sciences  Plant biochemistry 

Code Science Field
4.01  Agricultural and Veterinary Sciences  Agriculture, Forestry and Fisheries 
Keywords
bell pepper, tomato, lettuce, microbiological safety, phytopharmacetical residues, nutritional value, quality schemes
Evaluation (rules)
source: COBISS
Researchers (27)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  05085  PhD Franc Bavec  Plant production  Researcher  2014 - 2016  913 
2.  10142  PhD Martina Bavec  Plant production  Researcher  2014 - 2016  995 
3.  21789  PhD Jasna Bertoncelj  Animal production  Researcher  2014 - 2016  326 
4.  27553  PhD Milojka Fekonja  Plant production  Researcher  2014 - 2015  41 
5.  19992  PhD Silva Grobelnik Mlakar  Plant production  Researcher  2014 - 2016  388 
6.  00927  PhD Janez Hribar  Plant production  Researcher  2014 - 2016  860 
7.  20421  MSc Manfred Jakop  Plant production  Researcher  2014 - 2016  204 
8.  25505  PhD Jerneja Jakopič  Plant production  Researcher  2014 - 2016  205 
9.  18511  PhD Polona Jamnik  Biotechnology  Researcher  2014 - 2016  905 
10.  30037  Marinka Jan    Technical associate  2014 - 2016  11 
11.  11548  PhD Barbka Jeršek  Animal production  Researcher  2014 - 2016  419 
12.  13010  PhD Nina Kacjan Maršić  Plant production  Researcher  2014 - 2016  385 
13.  22491  PhD Anja Klančnik  Animal production  Researcher  2014 - 2016  392 
14.  23075  PhD Mojca Korošec  Animal production  Researcher  2014 - 2016  453 
15.  17004  PhD Janja Kristl  Plant production  Researcher  2014 - 2016  175 
16.  34631  Nataša Kunstelj  Plant production  Researcher  2016  213 
17.  23631  PhD Maja Mikulič Petkovšek  Plant production  Researcher  2014 - 2016  390 
18.  10677  PhD Marijan Nečemer  Chemistry  Researcher  2014 - 2016  350 
19.  11279  PhD Nives Ogrinc  Control and care of the environment  Researcher  2014 - 2016  1,138 
20.  33605  PhD Saša Piskernik  Plant production  Technical associate  2014 - 2016  62 
21.  32812  PhD Marijan Pogačnik  Biotechnical sciences  Researcher  2014 - 2016  107 
22.  22226  PhD Martina Robačer  Plant production  Researcher  2014 - 2016  247 
23.  29436  PhD Petra Terpinc  Plant production  Researcher  2014 - 2016  107 
24.  29564  PhD Matjaž Turinek  Plant production  Researcher  2014 - 2015  105 
25.  05733  PhD Rajko Vidrih  Plant production  Head  2014 - 2016  748 
26.  19640  PhD Emil Zlatić  Plant production  Researcher  2014 - 2016  154 
27.  17762  PhD Dragan Žnidarčič  Interdisciplinary research  Researcher  2014 - 2016  505 
Organisations (4)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  91,005 
2.  0481  University of Ljubljana, Biotechnical Faculty  Ljubljana  1626914  66,847 
3.  0482  University of Maribor, Faculty of Agriculture and Life Sciences  Hoče  5089638004  9,921 
4.  2979  Biotehnical Centre Naklo  Naklo  5088739  3,129 
Abstract
Due to new findings, vegetable plays very important role in human nutrition , it exsists a well-known correlation between the consumption of vegetable and especially the occurrence of cardiovascular disease and cancer. Vegetable is together with fruit only nutrient that is a source of antioxidants. In addition to the antioxidant vegetable is also a very important source of dietary fibers, which helps to regulate so called food energetic density. From nutritional point of view, antioxidants and dietary fibers are the most important components of vegetable that favor vegetable consumption. In the past vegetable was grown in soil and was seasonal product not available all around. Today, the cultivation of vegetable covers almost the whole season due to production in protected glasshouses. Traditional cultivation in soil is replaced with various soilless (hydroponic ) systems , where the nutrients are supplied in water. Of interest is also organic (ecologic) cultivation (up to 5 % of total production ) where vegetable is produced by means of strictly controlled organic fertilizers and other protection means. Slovenia is deficient in the cultivation of vegetable , a large proportion of vegetable is imported. Due to lack of self-sufficiency in Slovenia there is a great interest to increase its own production. The reason for the increase in production is also better quality of home-grown vegetables , because it is much closer to the final customer, which is reflected in the quality , storability and freshness. Storability of vegetables, which is transported from more distant places is ensured through the use of plant protection products. This (use of phytopharmaceuticals) can be avoided if the end customer is closer to the location of production. Shorter chain from producer to consumer is favorable to both consumer and producer ; from ecological perspective it means lower energy consumption for transportation and refrigeration. The quality and storability of vegetable depends on the method of production (soil , soilless , ecological) , all agro-technical measures, the genetic factor (variety ), and measures at and after harvest and distribution to the final customer. Ecologically produced vegetable is usually of better quality, does not contain pesticide residues and contains as a rule more antioxidants and less nitrites and nitrates. Intensification of production apart from most important dietary components also results in reduced amount of nutritionally important minerals, which has been well known. Soilless cultivation is the latest way of producing vegetable that otherwise yield similar quality, but usually with a slightly shorter lifespan after harvest. The safety of fresh vegetable pose the greatest problem due to pathogenic bacteria such as Salmonella, Escherichia coli ( serotype O157 : H7 , O145 , O104 : H4 ) and Listeria monocytogenes that caused several epidemics and diseases in the last few years. Therefore, we proposed in this project also microbiological analyses which will demonstrate the impact of vegetable growing system on the microbial population in each type of vegetables, the impact of microorganisms on the storability of individual vegetables as well as possibilities for cross contamination. The consumer is always deciding between price and quality , when the quality refers primarily to nutritional value, sensory quality and safety of food. Although the price is very important because it determines whether a consumer will buy a particular product or not, the consumer is willing to pay a little more for better quality. Under the terms of better quality consumer considers a product with a better nutritional value, without phytopharmaceutical residues and appropriate sensory characteristics, that are in vegetable mainly related to the perception of freshness. Freshness of the vegetable is one of the most important quality criteria that enable us to discern when vegetables were harvested, and what were the measur
Significance for science
Fruit and vegetable quality and storeability depends on numerous factors, i.e. pedocliamtic conditions, agricultural practice and storage conditions. In this project we found out that agricultural practice influence nutritional value of produce. Three manuscripts were published in international journals, the main topics were phenolic profiles and fatty acid composition. We belive that both topics will elucidate and enlight more profoundly the influence of agricultural conditions on fruit and vegetable quality. On the other hand will all data acquired within this project enable to differentiate between geographical origin of agricultural produce. Nowadays, consumers require to know the origin of food. Traceability is thus very important feature and according to our results, it seems that stable istopes, elements and some bioactive compounds might contribute to a better differentiation of produce from different geographical origin.
Significance for the country
Slovenia is not selfsufficient as regards the production of most vegetables including bell pepper, tomato and lettuce. Due this fact, results of the project are useful for slovenian producers who are trying to increase the production toward reaching selfsufficiency. Ecological and biodynamic production represent rather small ratio but are both becoming popular among producers. We believe that the results of our project enlighted the diffeentiation between eclogical and biodynamic on one side and conventional production on the other side. As we import the lions share of vegetables from different countries our results show that it is possible to differentiate between products from different countries. And most importantly, the results are of great value for the consumers. Indeed, traceability is a rule of thumb that could be implemented in fruit and vegetable bussines. Regarding treceability, we established some databasis that are still small but enable the differentiation of products according to geographical origin and agricultural practice.
Most important scientific results Annual report 2015, final report
Most important socioeconomically and culturally relevant results Annual report 2015, final report
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