These Regulations make provision for the enforcement of Council Regulation (EC) No.1139/98 concerning the compulsory indication, on the labelling of certain foodstuffs produced from genetically modified organisms, of particulars other than those specified. The products covered by Regulation 1139/98 are foods and food ingredients which are to be delivered as such to the final consumer, having been produced in whole or in part from genetically modified soya beans or genetically modified maize. Regulation 49/2000 extended the scope of this Regulation to cover sales to mass caterers and established a minimum threshold of 1 percent for the accidental contamination of an ingredient with material derived from genetically modified organisms. Regulation 50/2000 also applies in the case of food and food ingredients intended for final consumers and mass caterers. The labelling requirements in Regulation 258/97 are to ensure the final consumer is informed: (a) of any characteristic or food property rendering a novel food or novel food ingredient no longer equivalent to an existing food or food ingredient; (b) of the presence in the novel food or novel food ingredient of material which is not present in an existing equivalent foodstuff; and (c) of the presence of a genetically modified organism. These Regulations allow alternative labelling arrangements instead of the particulars required by those EC Regulations in the case of specified sales to the final consumer (reg. 5) They also incorporate specified provisions of the Food Safety Act 1990.