Analytical Characterization of Salicornia bigelovii Seed Oil Cultivated in Pakistan

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Abstract
Seeds of Salicornia bigelovii (hybrid variety sos-10) were collected from five coastal areas of Pakistan on the Arabian Sea. Hexane-extracted oil content was 27.2−32.0%. Results of other physical and chemical parameters of the extracted oil were as follows: iodine value, 128.0−130.5; refractive index (40 °C), 1.4680−1.4695; unsaponifiable matter, 1.63−2.00%; saponification value, 178.6−189.0; density (30 °C), 0.9036−0.9074. Tocopherols (α, γ, and δ) in the oil ranged up to 200 mg/kg. The S. bigelovii seed oil was found to contain high levels of linoleic acid (74.66−79.49%) and less oleic acid (12.33−16.83%). Saturated fatty acids, palmitic and stearic acids, ranged from 7 to 8.50% and from 1.24 to 1.69%, respectively. Linolenic acid (C18:3 ω−3) was found within the range of 1.50−2.31%. The induction period (Rancimat, 20 L/h, 120 °C) of the crude oil was 1.40−1.70 h. Specific extinctions at 232 and 270 nm were 1.90−2.40 and 0.40−0.62, respectively. Many parameters of S. bigelovii seed oil were quite compatible with those of safflower oil. Keywords: Salicornia bigelovii; analytical characteristics; high linoleic; tocopherols