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  • Title: Low erucic acid canola oil does not induce heart triglyceride accumulation in neonatal pigs fed formula.
    Author: Green TJ, Innis SM.
    Journal: Lipids; 2000 Jun; 35(6):607-12. PubMed ID: 10901421.
    Abstract:
    Canola oil is not approved for use in infant formula largely because of concerns over possible accumulation of triglyceride in heart as a result of the small amounts of erucic acid (22:1n-9) in the oil. Therefore, the concentration and composition of heart triglyceride were determined in piglets fed from birth for 10 (n = 4-6) or 18 (n = 6) d with formula containing about 50% energy fat as 100% canola oil (0.5% 22:1n-9) or 100% soybean oil, or 26% canola oil or soy oil (blend) with palm, high-oleic sunflower and coconut oil, providing amounts of 16:0 and 18:1 closer to milk, or a mix of soy, high-oleic sunflower and flaxseed oils with C16 and C18 fatty acids similar to canola oil but without 22:1. Biochemical analysis found no differences in heart triglyceride concentrations among the groups at 10 or 18 d. Assessment of heart triglycerides using Oil Red O staining in select treatments confirmed no differences between 10-d-old piglets fed formula with 100% canola oil (n = 4), 100% soy oil (n = 4), or the soy oil blend (n = 2). Levels of 22:1n-9 in heart triglyceride and phospholipid, however, were higher (P<0.01) in piglets fed 100% canola oil or the canola oil blend, with higher levels found in triglycerides compared with phospholipids. The modest accumulation of 22:1n-9 associated with feeding canola oil was not associated with biochemical evidence of heart triglyceride accumulation at 10 and 18 d.
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