n-Alkanes in tomato (Solanum lycopersicum L.) seed oil: the cultivar effect
2016
Giuffre, A. M. | Capocasale, M.
Three cultivars of tomato (Solanum lycopersicum L. cv ‘Principe Borghese’, ‘Rebelion F1’ and ‘San Marzano’) were separately grown in three greenhouses in Southern Italy to investigate the n-alkane (saturated linear hydrocarbons) composition of the tomato seed oil (TSO). The oil was obtained by Soxhlet-petroleum ether extraction. One-way ANOVA and principal component analysis were applied to differentiate the three cultivars. 14 components were identified. Tomato seed oil contained mainly odd-chain carbon number n -alkanes (79.09% - 89.35%), and among them, n -C25, n -C21 and n -C23 were prevalent in all cultivars. The Σ odd chain carbon number / Σ even chain carbon number ratio was 8.39 in ‘Principe Borghese’, 3.78 in ‘Rebelion F1’ and 7.60 in ‘San Marzano’. Relevant differences in the quantitative composition were observed among the oils ‘San Marzano’ contained the lowest n-alkane quantity (100.67 mg/kg) whereas ‘Principe Borghese’ contained 347.33 mg/kg.
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