麻豆约拍

Higher levels of a potentially toxic acid have been found in samples of rapeseed oil destined for human consumption.

Erucic acid occurs naturally, but levels are tightly controlled in food-grade oil. EU and UK legislation says rapeseed oil grown for food must contain no more that 5% acid, but most rapeseed food contracts are even stricter with a 2% limit. If rape's grown for industrial use - for things like bio-diesel or for making plastics - the acid content is usually between 50 and 55%.

But samples of rapeseed harvested last summer and grown for food use, have been found to show significant contamination with acid levels as high as 30%.

We also hear from two veteran journalists - one who covered the last EU referendum back in 1973, the other who's covered the institution ever since.

Presented by Sybil Ruscoe and produced by Sally Challoner.