In general
carotenoid content of foods is not altered to a great extent by
common household cooking methods such as microwave cooking,
steaming and boiling but extreme heat can result in oxidative
destruction of carotenoids [10].
Although several nutrient data
basis provide estimations of the daily intake of carotenoids by
humans these values vary considerably due to the sensitivity and
specificity of different analytical methods that are used in the
detection of these phytochemicals.