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Effects of olive oil and tomato lycopene combination on serum lycopene, lipid profile, and lipid oxidation

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Ahuja, KDK and Pittaway, JK and Ball, MJ (2006) Effects of olive oil and tomato lycopene combination on serum lycopene, lipid profile, and lipid oxidation. Nutrition, 22 (3). pp. 259-265. ISSN 0899-9007

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Abstract

Objective: We compared the effect of two diets (a diet high in olive oil and a diet high in carbohydrate and low in olive oil) with high lycopene content and other controlled carotenoids on serum lycopene, lipids, and in vitro oxidation. Methods: This was a randomized crossover dietary intervention study carried out in Launceston, Tasmania, Australia in healthy free-living individuals. Twenty-one healthy subjects who were 22 to 70 y old were recruited by advertisements in newspapers and a university newsletter. A randomized dietary intervention was done with two diets of 10 d each. One diet was high in olive oil and the other was high in carbohydrate and low in olive oil; the two diets contained the same basic foods and a controlled carotenoid content high in lycopene. Results: Significant increases (P < 0.001) in serum lycopene concentration on both diets were to similar final concentrations. Higher serum high-density lipoprotein cholesterol (P < 0.01), lower ratio of total cholesterol to high-density lipoprotein (P < 0.01), and lower triacylglycerols (P < 0.05) occurred after the olive oil diet compared with the high-carbohydrate, low-fat diet. There was no difference in total antioxidant status and susceptibility of serum lipids to oxidation. Conclusions: Serum lycopene level changes with dietary lycopene intake irrespective of the amount of fat intake. However, a diet high in olive oil and rich in lycopene may decrease the risk of coronary heart disease by improving the serum lipid profile compared with a high-carbohydrate, low-fat, lycopene-rich diet.

Item Type: Article
Keywords: Olive oil; Lycopene; Intervention diet; Carotenoids
Journal or Publication Title: Nutrition
Page Range: pp. 259-265
ISSN: 0899-9007
Identification Number - DOI: 10.1016/j.nut.2005.07.015
Additional Information: Definitive version is available online at http://www.sciencedirect.com/
Date Deposited: 12 Jul 2007
Last Modified: 18 Nov 2014 03:19
URI: http://eprints.utas.edu.au/id/eprint/1380
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