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Celjska kotlina je zaradi industrijske preteklosti eno najbolj degradiranih in onesnaženih območij v Sloveniji. Rušenje stare pražarne cinkove rude in uporaba onesnaženega odpadnega materiala za izgradnjo nasipov in dovozov so povzročili široko razpršitev potencialno toksičnih elementov po celotnem območju kotline. Zaradi novih trendov uporabe užitnih samoniklih rastlin v sodobni kulinariki smo si zastavili vprašanje, če bi se na nekaterih območjih Celjske kotline morali izogibati uporabi teh rastlin zaradi onesnaženosti s potencialno toksičnimi elementi. Travniška tla in zelene dele užitnih samoniklih rastlin smo vzorčili spomladi, ko se običajno nabirajo za uživanje. Vzeli smo vzorce tal v različnih conah onesnaženja s kadmijem, predvidenih iz prejšnjih raziskav, od neonesnaženih do kritično onesnaženih. Vzorčene rastlinske vrste so bile bršljanasta grenkuljica (Glechoma hederacea L.), navadna marjetica (Bellis perennis L.), navadni regrat (Taraxacum officinale L.), ozkolistni trpotec (Plantago lanceolata L.) in črna detelja (Trifolium pratense L.). Marjetica je akumulirala več kadmija in svinca kot vse druge obravnavane rastlinske vrste. Analiza privzema cinka pa ni pokazala statistično značilnih razlik med rastlinskimi vrstami. Analizirane bioaktivne snovi so bili plastidni pigmenti (β-karoten, lutein, neoksantin, anteraksantin, violaksantin, klorofila a in b) in tokoferoli (γ, δ, α). Največjo vsebnost plastidnih pigmentov je imel navadni regrat, najmanjšo pa navadna marjetica. Pri tokoferolih so bile ugotovljene statistično značilne razlike med skoraj vsemi rastlinskimi vrstami, razen med navadno marjetico in črno deteljo ter ozkolistnim trpotcem in navadnim regratom. Celje basin is one of the most degraded and contaminated areas in Slovenia, due to the industrial background. The demolition of the old zinc ore processing plant and use of contaminated waste material for embankment and driveways, resulted in wide dispersal of potentially toxic elements throughout the basin area. Because of the new trends of promoting wild plants in modern cuisine, we posed a question if in some areas in Celje basin, the use of these plants should be avoided due to contamination with toxic elements. We sampled meadow soils and aboveground, green, edible parts of selected wild plants, in spring when they are usually collected for consumption. We took soil samples in different cadmium contamination zones, predicted from previous studies, ranging from uncontaminated to critically contaminated. Plant species surveyed were ground ivy (Glechoma hederacea L.), common daisy (Bellis perennis L.), common dandelion (Taraxacum officinale L.), narrow-leaved plantain (Plantago lanceolata L.) and red clover (Trifolium pratense L.). Daisy was a greater accumulator of cadmium and lead than all other tested plant species. However, the analysis of zinc accumulation did not show significant differences between plant species. Bioactive compounds analysed were plastid pigments (β-carotene, lutein, neoxantin, antheraxantin, violaxantin, chlorophylls a and b), and tocopherols (γ, δ, α). In the case of plastid pigments, the plant species with the highest concentration was the common dandelion. Common daisy contained the lowest concentration of plastid pigments. In the case of tocopherols statistically significant differences were found between almost all plant species, excluding daisy and clover, as well as narrow-leaved plantain and common dandelion.

Hmelj je trajna ovijalka, primarno gojena zaradi uporabe v pivovarstvu. Za pivovarstvo so uporabni storžki hmelja, ki s svojimi bioaktivnimi snovmi pivo konzervirajo in mu dajejo prepoznavno aromo in okus. Storžke uporabljajo tudi v proizvodnji farmacevtskih pripravkov. Poleg storžkov so uporabni tudi mladi poganjki, ki se uporabljajo kot zelenjava, preizkušajo pa tudi potencialno uporabnost listov in plodov. Storžki in poganjki ter tudi listi in plodovi vsebujejo snovi, ki imajo bioaktivno delovanje. Bioaktivne snovi, ki so lahko primarni ali sekundarni metaboliti, hmelju dajejo sedativne, estrogene, protimikrobne, antioksidativne, antikancerogene in druge lastnosti. Najbolj so raziskane bioaktivne snovi v storžkih, med njimi zlasti eterična olja, hmeljeve smole in hmeljevi fenoli. Med fenoli sta najbolj zanimiva ksantohumol in 8-prenilnaringenin, ki velja za enega najmočnejših fitoestrogenov. Zaradi enostavne uporabe in brez primerov klinično obravnavanih alergijskih reakcij in stranskih učinkov ima hmelj velik potencial v farmaciji. Hops is a perrenial climbing plant, primarily cultivated for its use in brewing. Hop cones are used in brewing, whose bioactive compounds conserve beer and give it its distinctive aroma and taste. Hop cones are also used in manufacturing pharmaceuticals. In addition to cones, young shoots are used as vegetables, potential uses for leaves and seeds are also being investigated. Cones, shoots, as well as leaves and seeds contain bioactive compounds. Bioactive substances, which are primary or secondary metabolites, give the hops sedative, estrogenic, antimicrobial, antioxidant, anticancer and other properties. Bioactive compounds found in hop cones are the most studied, especially essential oils, hop resins and hop phenolics. Among the phenolics, the most interesting ones are xanthohumol and 8-prenylnaringenin, the latter is considered to be one of the most potent phytoestrogens. Because of its simple use and unregistered allergic reactions or side effects, hops have great potential in pharmaceutical use.