Učinkovit način dodajanja selena v vsakdanjo prehrano s poudarkom na rastlinskih virih

Vida Škrabanja

Povzetek


Selen je eden izmed esencialnih elementov, potrebnih za človekovo zdravje. Razmere v okolju in kmetijska praksa imajo velik vpliv na vsebnost selena v rastlinah. Gojenje rastlin, obogatenih s selenom, je učinkovit način dodajanja selena v vsakdanjo prehrano tistih, ki tega esencialnega elementa ne prejmejo v zadostnih količinah. Biorazpoložljivost selena je v korelaciji z izvorom in s kemijsko obliko, v kateri je ta prisoten v živilu. S prehranskega vidika so s selenom obogatena živila potencialni dodatni vir selena, ki se vnaša v organizem preko prehranske verige in se s kompleksnimi pretvorbami na molekulski ravni pretvarja iz anorganskih v bolj razpoložljive organske oblike. V članku so zbrani rezultati sistematičnega raziskovanja vsebnosti selena v posameznih rastlinskih vrstah in različnih načinov dodajanja selena za dosego večje koncentracije le-tega v pridelku. V Sloveniji so tla s selenom revna in je možnost pomanjkanja selena v prehrani nekaterih skupin prebivalstva velika. Zato je v članku večji poudarek namenjen pregledu objavljenih del domačih strokovnjakov, ki so vsebnost selena spremljali ob simulaciji sprememb okoljskih dejavnikov, kar je dodatno vplivalo na fiziološke lastnosti in pridelek rastlin. Upoštevana je pozitivna vloga selena v presnovi človeka ter njegov vpliv na zdravje. Omenjeni so tudi negativni vplivi zaradi pomanjkanja ali presežka selena v hrani, ki opozarjajo na to, da je treba priporočila v zvezi z vnosom selena v naš organizem temeljito spremljati in premišljeno prilagajati referenčne vrednosti.


Ključne besede


selen; rastlinski viri; prehranski vnos; dodatek selena

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2017.109.1.14

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