Canola Production: A Case Study

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The name canola was introduced in Canada in 1979 that specifically denotes rapeseed varieties that produce oil having less than 2% erucic acid and less than 30 μmol/g meal of total glucosinolates (Canola Council of Canada 1990). These Brassica varieties are sources for some of the healthiest vegetable oils for human consumption (Downey and Bell 1990), as well as a potential source for manufacturing a wide variety of environment-friendly products such as biodiesel and bioplastics (Wu and Muir 2008). Canola seed typically contains over 40% oil and in Australia, the average oil content for the 2008 canola harvest was 41.8%4 (Seberry DE, Mailer RJ, Parker PA. et al 2008). The annual worldwide growth of canola production has been phenomenal and …show more content…

However, animal models have shown that oleic acid consumption increases LDL particle cholesteryl oleate content which is associated with increased LDL-proteoglycan binding and atherosclerosis. The effects of dietary fats on the risk of coronary artery disease (CAD) have traditionally been estimated from their effects on LDL cholesterol. Fats, however, also affect HDL cholesterol, and the ratio of total to HDL cholesterol is a more specific marker of CAD than is LDL cholesterol. It is well recognized that amounts of trans and saturated fats should be minimized in diets; however, considerable debate remains regarding optimal amounts of dietary n−9, n−6, and n−3 fatty acids. DHA-rich canola oil have been found to improve HDL cholesterol, triglycerides, and blood pressure, thereby reducing Framingham 10-y CHD risk scores (FRS) compared with other oils varying in unsaturated fatty acid composition. The effects of dietary fats on the risk of coronary artery disease (CAD) have traditionally been estimated from their effects on serum total cholesterol7 (Anderson JT, Grande et al …show more content…

Such an approach, however, ignores the effects of diet on HDL cholesterol. A prospective, observational study based on 7.7 years of follow-up for incidence of coronary heart disease and stroke has shown that increasing the concentration of HDL cholesterol through diet will lower the risk of CAD. After conducted various tests and experiments, it was found out that there is no significant difference in mean HDL-C between stroke cases (n = 33) and those free of cardiovascular disease. The incidence rates of coronary heart disease and definite myocardial infarction were three to four times higher in the lowest HDL-C quartile ( (-- removed HTML --) or = 1.66 mmol/L), and there is a significant dose response for definite myocardial infarction. Serum total cholesterol is positively and significantly associated with coronary heart disease incidence. Coronary heart disease incidence is inversely related to HDL-C in urban Japanese middle-aged men, whose mean total cholesterol (5.10 mmol/L) is relatively low8 (Kitamura A, Iso H, Naito Y, et al

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