Antioksidativna učinkovitost v pridelkih iz slovenske ekološke in konvencionalne pridelave

Manca KNAP, Nives OGRINC, Klemen POTOČNIK, Rajko VIDRIH

Povzetek


Povpraševanje po ekološko pridelanih živilih se povečuje. Ekološki proizvodi veljajo za bolj zdrave v primerjavi s konvencionalnimi. Po navajanju drugih virov ne vsebujejo fitofarmacevtskih sredstev imajo manjšo vsebnost nitratov in vsebujejo več antioksidantov. Namen študije je bil preveriti ali obstajajo razlike v antioksidativni učinkovitosti med slovenskimi pridelki pridelanimi na ekološki in konvencionalni način. Za določevanje antioksidativne učinkovitosti smo uporabili metodo DPPH (2,2-difenil-1-pikrilhidrazil). Analiza je bila opravljena na 16 vrstah iste sorte pridelkov iz ekološke in konvencionalne pridelave. Izmerili smo polarno antioksidativno učinkovitost (AAp) in antioksidativno učinkovitost v etil-acetatu topnih antioksidantov (EA AA). Izračunali smo osnovne statistične parameter po vrstah pridelkov in načinu kmetovanja in z analizo variance ocenili razlike med načinoma kmetovanja za posamezne pridelke. Ocenjene razlike med interakcijami pridelka in načina kmetovanja večinoma niso statistično značilne. Izjema za AAp sta bazilika in rdeča pesa, kjer so bile večje vrednosti za konvencionalne pridelke. Za vrednost EA AA so bile statistično značilno večje vrednosti ocenjene za ekološki brokoli, kumaro, rukolo in češnjo.

Ključne besede


antioksidativna učinkovitost; ekološko kmetijstvo; konvencionalno kmetijstvo; sadje; zelišča; zelenjava

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2014.103.2.12

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