Claims have also been made that the companies used cheap products like water and manioc flour to blend in with meat before sale.
The scandal is threatening Brazil's reputation as the world's biggest beef and poultry-exporting nation.
TODAY has reached out to AVA, other major supermarket chains as well as meat importers for comments.
In the scheme, health inspectors allegedly received bribes from producers to turn a blind eye to the fact that some of the meat, including sausages and cold cuts, had been adulterated with ingredients including pig heads, with acid applied to disguise bad smells.
Authorities say they have found evidence of meatpackers bribing inspectors and politicians to overlook unsanitary practices such as processing rotten meat and shipping exports with traces of salmonella. The South Korean ministry said that suppliers of Brazilian chicken would have to submit a health certificate issued by the Brazilian government. However, both JBS and BRF have denied the allegations against them.
IFA president Joe Healy said the latest shocking revelations on the failure of Brazil to meet European Union standards and controls in the meat sector raises very serious concerns around European Union meat imports.
In an attempt to minimise the scandal, Brazil's President Michel Temer said the probe involved only 21 of Brazil's more than 4,800 meat processing units.
According to media reports, the size of affected meat imports seemed to be small and the two sides were working to figure out the detailed amount and specific kinds of product to the European Union markets, said Brivio.
Likewise, workers pointed out that since the rotten meat scandal, the restaurant has brought fewer Brazilian products.
Nearly all of the investigations were focussed on just one Brazilian state.
Adding that he believes that beef is the only meat affected by the Brazilian scandal, Mr Chung said consumers here should not worry since the quantity of beef consumed in Singapore is small, compared to other meats.
"We have sent a letter to the EU Commission calling for our safety standards to be met and for Mercosur countries (Brazil, Argentina, Uruguay, Paraguay and Venezuela) to ensure the individual traceability of cattle", said secretary general Pekka Personen. JBS has been inappropriately connected to this story.
In a statement, the company said it has complete confidence in its production processes and in the integrity of its products.
The U.S. Meat Export Federation said it's too early to speculate on the potential impact on the global meat trade because "there really are not enough facts available about the investigation, or about how Brazil's trading partners will respond", the group said in an emailed response to questions from Bloomberg.