Canola produced under boreal climatic conditions in Newfoundland and Labrador have a unique lipid composition and expeller press extraction retained the composition for commercial use

• Published in: Journal of Advanced Research
• Main Authors: Albert Adu Sey, Thu Huong Pham, Vanessa Kavanagh, Sukhpreet Kaur, Mumtaz Cheema, Lakshman Galagedara, Raymond Thomas
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2020
• Subjects: Canola; Omega-3 fatty acids; Monoacetyldiacylglycerol; Non-solvent extraction; Lipid; Medicine (General); R5-920; Science (General); Q1-390; Newfoundland
• Online Access: https://doi.org/10.1016/j.jare.2020.05.002; https://doaj.org/article/625ec49574b54ba8865d5a39b94ed76b

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.