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Analysis of sterols (as acetyl derivatives), after TLC/AgNO3 fractionation: A: Total sterols; B = TLC band Rf 0.71; C = TLC band Rf 0.60; D = TLC band Rf 0.51; E = TLC band Rf 0.35. Peaks identification: 1: Cholesterol; 2: Brassicasterol; 3: Not identified; 4: Campesterol; 5: 24-methylencholesterol; 6: Stigmasterol; 7: ß-sitosteol; 8: Δ-5-avenasterol; 9: Δ-7-stigmastenol (Conte et al., 1979, reproduced under permission).
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