Die carotinoidzufuhr in der Nationalen Verzehrsstudie

Abstract

In nutritional epidemiological studies high consumption of fruits and vegetables was shown to be an important preventive measure to reduce the risk of cancer, coronary heart disease, and cataracts. These effects cannot be explained completely and in a sufficient way by the intake of β-carotene and vitamin C. Other carotenoids differing in their antioxidative and biological properties are also provided with fruits and vegetables in significant amounts. Because data for other carotenoids than β-carotene are not considered in computerized German food database and food composition tables, representative carotenoid intake calculations for the German population are missing. Therefore a carotenoid database, containing α- and β-carotene, lycopene, lutein/zeaxanthin, and cryptoxanthin values for different fruits, vegetables, and other carotenoid-containing foods, was developed. With this database the carotenoid intake of the German population - stratified by sex and age - was evaluated on the basis of the German National Food Consumption Survey (NVS). The mean total carotenoid intake amounts of 5.33 mg/day. The average intake lutein was 1.91 mg/day, β-carotene intake amounts to 1.81 mg/day, lycopene intake was 1.28 mg/day, α-carotene intake was 0.29 mg/day, and cryptoxanthin intake was 0.05 mg/day. Tomatoes and tomato products provide most of the lycopene. Green salads and vegetables are the most important contributors of lutein in Germany. Zeaxanthin is mainly consumed with maize but also with spinach and other vegetables like cabbage; α- and β-carotene are mainly consumed with carrots. Peppers, oranges, and orange- juice are the most important cryptoxanthin sources.