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      Intake of potentially anticarcinogenic flavonoids and their determinants in adults in The Netherlands.

      1 , , ,
      Nutrition and cancer
      Informa UK Limited

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          Abstract

          Flavonoids are strong antioxidants that occur naturally in foods and can inhibit carcinogenesis in rodents. Accurate data on population-wide intakes of flavonoids are not available. Here, using data of the Dutch National Food Consumption Survey 1987-1988, we report the intake of the potentially anticarcinogenic flavonoids quercetin, kaempferol, myricetin, apigenin, and luteolin among 4,112 adults. The flavonoid content of vegetables, fruits, and beverages was determined by high-performance liquid chromatography. In all subjects, average intake of all flavonoids combined was 23 mg/day. The most important flavonoid was the flavonol quercetin (mean intake 16 mg/day). The most important sources of flavonoids were tea (48% of total intake), onions (29%), and apples (7%). Flavonoid intake did not vary between seasons; it was not correlated with total energy intake (r = 0.001), and it was only weakly correlated with the intake of vitamin A (retinol equivalents, r = 0.14), dietary fiber (r = 0.21), and vitamin C (r = 0.26). Our use of new analytic technology suggests that in the past flavonoid intake has been overestimated fivefold. However, on a milligram-per-day basis, the intake of the antioxidant flavonoids still exceeded that of the antioxidants beta-carotene and vitamin E. Thus flavonoids represent an important source of antioxidants in the human diet.

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          Author and article information

          Journal
          Nutr Cancer
          Nutrition and cancer
          Informa UK Limited
          0163-5581
          0163-5581
          1993
          : 20
          : 1
          Affiliations
          [1 ] DLO-State Institute for Quality Control of Agricultural Products (RIKILT-DLO), Wageningen, The Netherlands.
          Article
          10.1080/01635589309514267
          8415127
          b611a0e3-2f11-40a9-b0a8-b8d015cab7aa
          History

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