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  • 1
    Language: German
    In: Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung, 1984, Vol.178(2), pp.115-117
    ISSN: 0044-3026
    E-ISSN: 1438-2385
    Source: Springer (via CrossRef)
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  • 2
    Language: German
    In: Zeitschrift für Lebensmittel-Untersuchung und Forschung, 1984, Vol.178(2), pp.115-117
    Description: The content of individual tocopherols was determined in 11 samples of lupine oil ( L. mutabilis ) from Peru by GC- and HPLC-procedures. The main component is γ-tocopherol (42–69 mg/100 g oil); α-and δ-tocopherol were found in traces (0.1–0.7 mg/100 g oil). The pretreatment of samples, necessary for the GC-methods leads to tocopherol losses of 30% on average, this loss is mainly caused by the saponification of the samples. The tocopherols are predominantly present in an unesterifed state. Der Gehalt der einzelnen Tocopherole im Lupinenöl () wird durch Gaschromatographie und Hochdruckflüssigkeits-Chromatographie bestimmt. Neben einem vorherrschendem Anteil an γ-Tocopherol (420–690 ppm) werden α- und erstmalig auch °-Tocopherol jeweils nur im Spurenbereich nachgewiesen (1–7 ppm). Es kann gezeigt werden, daß durch die für GC-Messung notwendige Verseifung und Derivatisierung der Proben Tocopherolverluste im Mittel um 30% verursacht werden. Die Tocopherole des Lupinenöls liegen überwiegend in unveresterter Form vor.
    Keywords: Lupinus Mutabilis;
    ISSN: 0044-3026
    E-ISSN: 1438-2385
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