A genetically modified soya bean, which can help to prevent heart attacks, has passed the first phase of trials in the United States.
Researchers at the University of South Dakota say that the promising results of the experiments have cleared the way for its use in foods such as spreads, yoghurts, cereal bars, and salad dressings.
The researchers said that their study had shown that oil from the GM soya could raise blood concentrations of long-chain omega3 acids, which are found chiefly in oily fish such as salmon, trout and fresh tuna.
They highlighted the fact that omega3 acids protect against cardiovascular diseases and diabetes and help the growth of brain cells in the young.
While health experts recommend a portion of oily fish every week, most adults ignore the advice. Efforts to promote fish consumption have also raised concerns about fragile marine stocks.
However, the university team says that the GM soya can offers a sustainable, fish-free way in which people can maintain a diet rich in omega3 fatty acids.
Biotechnology company Monsanto is said to have harvested 600 tonnes of the GM soya beans this year from trial plots in the US, some of which ahs already been passed on to food companies to develop products.
The company hopes to secure the US Food and Drug Administration's approval for the GM soya as a food by 2011, something that will allow it to reach American supermarket shelves by 2012.