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Open AccessCommunication
Molecules 2007, 12(8), 1829-1835; doi:10.3390/12081829

Effect of Cooking Processes on the Contents of Two Bioactive Carotenoids in Solanum lycopersicum Tomatoes and Physalis ixocarpa and Physalis philadelphica Tomatillos

Centro de Química, Instituto de Ciencias, Universidad Autónoma de Puebla, Apdo. Postal J-55, 72571 Puebla, Pue. Mexico
Author to whom correspondence should be addressed.
Received: 21 March 2007 / Revised: 31 July 2007 / Accepted: 31 July 2007 / Published: 13 August 2007
(This article belongs to the Special Issue Phenolics and Polyphenolics)
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Calculation of the HPLC chromatographic retention times of different carotenoids supported our improved chromatographic separation of β-carotene and lutein in four tomatoes and two tomatillo varieties in fresh form and after three different cooking procedures: pot boiling, cooking in a pressure cooker and microwaving. A good separation was achieved experimentally using an Ultrasphere ODS column and gradient elution with an acetonitrile-tetrahydrofuran-water mobile phase. It was shown that diverse tomato species contained different amounts of β-carotene (6-400 μg/100 mg) and lutein (2-30 μg/100 mg). The concentration in fresh samples was higher than in cooked tomatoes. The β–carotene content in fresh tomatillo varied between 2 and 20 μg/100 mg. Microwaving caused partial destruction of the β-carotene and lutein in tomatillos.
Keywords: β-Carotene; lutein; tomatoes; tomatillos; boiling process. β-Carotene; lutein; tomatoes; tomatillos; boiling process.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Elizalde-González, M.P.; Hernández-Ogarcía, S.G. Effect of Cooking Processes on the Contents of Two Bioactive Carotenoids in Solanum lycopersicum Tomatoes and Physalis ixocarpa and Physalis philadelphica Tomatillos. Molecules 2007, 12, 1829-1835.

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