Some Observations on the Behavior of Vitamin a in or From Primary Sources

Effect of Storage on Vitamin A in Dried Foods

“…Quinn et al (7) state that the loss of vitamin A in dried spinach amounted to approximately 70 per cent upon storage for a period of 12 to 15 months. Von Wendt (9) reports that the vitamin A content of food diminishes during the winter months, that the vitamin A is slowly oxidized when foods are stored, and that cattle fodder, such as hay and carrots, becomes markedly deficient as a source of vitamin A as the winter months progress; hence milk and other dairy products also become deficient in vitamin A.…”