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  • Title: Tocopherols and tocotrienols in wheat genotypes in the HEALTHGRAIN Diversity Screen.
    Author: Lampi AM, Nurmi T, Ollilainen V, Piironen V.
    Journal: J Agric Food Chem; 2008 Nov 12; 56(21):9716-21. PubMed ID: 18921970.
    Abstract:
    Tocopherol and tocotrienol compositions were studied in 175 genotypes of different wheat types grown under similar conditions to screen for natural diversity. The main focus was on bread wheats, including 130 and 20 winter and spring types, respectively. The average total content of tocopherols and tocotrienols was 49.4 microg/g of dm, with a range of 27.6-79.7 microg/g of dm, indicating a 2.9-fold variation among genotypes. Beta-tocotrienol and alpha-tocopherol were the major vitamers, and in general there were more tocotrienols than tocopherols. In the early cultivated forms of wheat the proportion of tocotrienols was especially high, at >or=62.5%. In conclusion, there was a large variation in total tocopherol and tocotrienol contents in bread wheats and this, along with the high proportions of tocotrienols in other types of wheat, demonstrates the great genetic potential of genotypes to be exploited by plant breeders.
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