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  • Title: An interesterified palm olein test meal decreases early-phase postprandial lipemia compared to palm olein: a randomized controlled trial.
    Author: Hall WL, Brito MF, Huang J, Wood LV, Filippou A, Sanders TA, Berry SE.
    Journal: Lipids; 2014 Sep; 49(9):895-904. PubMed ID: 25103522.
    Abstract:
    Palm oil that has been interesterified to produce a higher proportion of palmitic acid (16:0) in the sn-2 position reduces postprandial lipemia in young, normolipidemic men and women, but effects in older subjects with higher fasting triacylglycerol (TAG) concentrations are unknown. We tested the hypothesis that high-fat meals rich in interesterified palm olein (IPO) decrease lipemia and alter plasma lipoprotein fraction composition compared to native palm olein (NPO) in men aged 40-70 years with fasting TAG concentrations ≥1.2 mmol/L. Postprandial changes in plasma lipids following meals containing 75 g fat (NPO and IPO) were compared using a randomized, double-blind crossover design (n = 11). Although there were no significant differences in plasma TAG concentrations between meals over the total 6-h postprandial measurement period, IPO resulted in a decreased plasma TAG response during the first 4 h of the postprandial period (iAUC 1.65 mmol/L h, 95% CI 1.01-2.29) compared to NPO (iAUC 2.33 mmol/L h, 95% CI 1.58-3.07); meal effect P = 0.024. Chylomicron fraction TAG concentrations at 4-6 h were slightly reduced following IPO compared to NPO [NPO-IPO mean difference 0.29 mmol/L (95% CI -0.01-0.59), P = 0.055]. There were no differences in IDL fraction TAG, cholesterol or apolipoprotein B48 concentrations following IPO compared with NPO. In conclusion, consuming a meal containing palm olein with a higher proportion of 16:0 in the sn-2 position decreases postprandial lipemia compared to native palm olein during the early phase of the postprandial period in men with higher than optimal fasting triacylglycerol concentrations.
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