More products tainted by Australian barley — which was found to have pesticide levels five times above acceptable limits — are being recalled across Japan.
Kyoto-based Japan Luna has announced the voluntary recall of 132,000 yoghurt bowls containing cereal from the suspect batch.
On Tuesday, Nissin Cisco recalled 315,000 of its cereal products.
A shipment of Australian barley from ITOCHU Corporation in August last year was found to have residue of the pesticide azoxystrobin well above normal levels.
The Japanese Government has banned imports of barley from ITOCHU, and all shipments of the Australian grain are now being closely inspected and analysed.
The import ban will not impact exports which already have approval.
ITOCHU to conduct thorough investigation
Almost half of the 85 tonne export with pesticide traces has already been used in food products and most likely already eaten, but ITOCHU said the quantity and concentration of the susbstance detected did not pose a health risk.
The Japanese Ministry of Agriculture, Forestry and Food said it had given ITOCHU until April 27 to conduct a thorough investigation to find out what happened and how the batch had become tainted.
"ITOCHU says something possibly happened between harvesting and shipping, perhaps during the cleaning process, but they are still investigating," the ministry's Tetsuo Ushikusa told the ABC.
"It's very unlikely that it suddenly appeared in the fields.
"In the last 14-15 years, azoxystrobin has never been detected from Australian imports — not even a tiny amount."
In a statement, ITOCHU apologised and said it was working hard to make sure it never happened again.
