The average fatty acid (FA) composition of canola oil is made up of 62% oleic acid (C18:1n9), 19% linoleic acid (C18:2n6), 9% linolenic acid (C18:3n3) and 7% saturated FA (SFA). We investigated whether boreal climate (7.5-17.2 °C) favorably altered the FA composition of canola. Results indicate that canola cultivated in boreal climatic conditions had approximately twice the levels of omega-3 FA (17-20%) compared to canola from other growing areas (9%). The presence of monoacetyldiacylglycerol (MAcDG), a unique class of triglyceride, is reported for the first time in canola cultivated in a boreal climate, and has the potential to reduce the risk of obesity and other health related diseases. We further demonstrated that a non-solvent based extraction method retained the novel lipid composition without reducing the quality of oil being produced. Our results contribute significantly to the understanding of lipid accumulation in the world's second most important oil crop when cultivated in a boreal or northern climate.

菜籽油的平均脂肪酸（FA）组成由62％的油酸（C18：1n9），19％的亚油酸（C18：2n6），9％的亚麻酸（C18：3n3）和7％的饱和FA（ SFA）。我们调查了北方气候（7.5-17.2°C）是否有利地改变了双低油菜籽的FA组成。结果表明，与其他产区的双低油菜籽（9％）相比，在北方气候条件下种植的双低油菜籽的omega-3 FA水平约为17-20％。据报道，在寒冷气候下种植的双低油菜籽中首次报道了甘油三酸酯的一类，即单乙酰基二酰甘油（MAcDG）的存在，它具有降低肥胖症和其他与健康相关疾病的风险。我们进一步证明了基于非溶剂的提取方法保留了新型脂质组合物，而不会降低所生产油的质量。