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Nie je to ale tak, ze tie nenasytene mastne kyseliny z ryb sa tiez v ramci potravinoveho retazca kumuluju, spolu s tazkymi kovmi a inymi toxinmi?

EDIT: Inak co ma nedavno prekvapilo, ked som narazil na informaciu, ze bohatym zdrojom omega-3 je aj baranina za predpokladu, ze boli zvirata chovane na zelenej pase. Ospravedlnujem sa za OT v ramci fora, ale ta imfo ma fakt zaujala :)




  • 00000101077637570006357700064106072207410722074607221459072214630722660507226995
    Tomáš, to sa vie 21.06.2013 - 12:33:02 level: 1 UP New
    Re[5]: taka otazocka
    nielen baranina ale v podstate vsetky prezuvavce maju viac n3 ak su chovane na trave a sene
    more children: (1)
  • 00000101077637570006357700064106072207410722074607221459072214630722660507226982
    Thunder Perfect Mind 21.06.2013 - 12:22:14 level: 1 UP New
    Re[5]: taka otazocka
    Nie je to ale tak, ze tie nenasytene mastne kyseliny z ryb sa tiez v ramci potravinoveho retazca kumuluju, spolu s tazkymi kovmi a inymi toxinmi?
    este trochu inak (odtialto, kapitola 19):

    A final aspect related to aquaculture is the widespread practice of feeding wild-caught seafood
    to farmed piscivorous seafood species, e.g. salmon. This practice decreases the availability of
    seafood for direct human consumption on a per capita basis [95, 106]. This leads to a paradox:
    aquaculture is a possible solution, but also a contributing factor to the collapse of fisheries stocks
    worldwide [106]. It must be said that up to now, aquaculture is still the largest consumer of
    fish-derived oils, and so is clearly not capable of operating in a sustainable manner [107]. So,
    to meet consumer demand for piscivorous fish and at the same time reduce the pressure on wild
    fish stocks, land-based plants—such as grains, soybeans, legumes, and blended vegetable oils—
    are increasingly being used as staple fish food. The disadvantage is that using this feed will
    lower the LC n-3 PUFA concentration compared to the wild-caught species, affecting one of
    the important nutritional advantages of seafood consumption [95]. However, actually different
    studies are running that investigate whether a combination of a diet high in vegetable oil with a
    diet high in fish oil only during the last weeks of the production cycle can lead to a restoration
    of EPA and DHA concentration to equal levels when compared to fish oil-fed counterparts [102,
    107]. More research is needed and probably it will take time before such customs are used in
    practice. An alternative to this kind of combined diets can be the use of single cell oils and
    genetically modified plants (and animals) as sustainable sources of LC n-3 PUFAs.

    a kapitola 20:
    A high degree of purity has been seen in FODS prepared from the oil of fish caught in clean
    waters (open-ocean) compared to more polluted fish from coastal areas or closed seas.
    2. Oil derived from smaller species, such as anchovy, typically contains fewer contaminants than
    oil from larger fish (cod or salmon). This is most probably due to the shorter life of smaller
    fish, which leads to a lower accumulation of contaminants.


    Inak co ma nedavno prekvapilo, ked som narazil na informaciu, ze bohatym zdrojom omega-3 je aj baranina za predpokladu, ze boli zvirata chovane na zelenej pase.
    ano - kapitola 6