American rice sold in a Derry branch of Tesco has been found with pesticide levels above the recommended limit, according to results published today.
Scientists discovered inorganic bromide above a maximum concentration recommended to farmers and growers in one sample of 'Easy Cook Long Grain Rice'.
However, the Pesticide Residues Committee (PRC) stressed the level was not high enough to cause concern for human health.
Inorganic bromide occurs naturally at low levels in food. The concentration detected is thought to be a result of the use of methyl bromide to sterilise soil before planting.
The committee also found pesticides in nine samples of sweet potatoes - although below the maximum level permitted.
Dr Ian Brown, chairman of the PRC, said: "These results have not caused me any concern with regard to consumer health.
"But we are not complacent. I believe they show consumers can continue to have confidence in the risk assessment process and in our monitoring programme in general."
Tesco have not commented.
PA