Some flavorings have raised other types of health flags, like diacetyl, the artificial buttery flavoring in microwave popcorn.

有一些打着健康旗号的调料，如丁二酮、人造黄油调料品用炉爆米花。

Some users might see warnings or labels that say our product is diacetyl free and that might be true.

有些用户可到警告或标签说，我们的产品是不含双乙酰的，这可是真的。

Some have been found to contain diacetyl, a chemical that is known to give butter its" buttery" taste.

其中一些被发现含有双乙酰，是一种可以令黄油具有“黄油”味道的化学物质。