What's the Difference Between Canola and Rapeseed Oils?
In the 1970s canola was created through traditional plant cross-breeding by removing two things found in the rapeseed plant: glucosinolates and erucic acid. Erucic acid was removed because it was believed to be inedible or toxic in high doses. The newly developed plant was renamed "canola" – a combination of "Canadian" and "Oil" (or ola) to make this difference apparent.
By definition, if a seed is labeled "canola" it has to have less than 30 micromoles of glucosinolates and less than 2% of erucic acid.
http://www.thekitchn.com/whats-the-difference-between-canola-and-rapeseed-206047
不过, 这篇文章说的是从rapeseed中移走了其有毒物质。。
但确有著多文章说它是GMO(转基因食品)如
https://draxe.com/canola-oil-gm/
中国将限制加拿大油菜花进口 可能影响小杜访华