Abstract:
The seeds from two varieties namely Sabz Pari and Punjab-8 of Okra (Hibiscus esculentus), grown under similar environment, exhibited oil content 11.72 and 13.42%, respectively. Protein, fiber, moisture and ash contents were found to be 20.00, 29.60, 7.26 and 5.18 and 23.68, 27.41, 8.35 and 6.23, respectively. The physicochemical characteristics of the extracted oils were as follows: iodine value, 111.6-1 14.9; refractive index (40°C), 1.4620-1 .4640; density (24°C), 0.904-0.908 gcm-3, saponification value, 180.3-1 85.8 (mg of KOH g-1 of oil); unsaponifiable matter, 0.61-0.65%; color (1-in. cell), 3.40-7.00 R + 34.00-70.00 Y; acid value, 3.49-4.67 (mg of KOH g-1 of oil); peroxide value, 7.29-8.47 meq kg-1 . Tocopherols (α, γ and δ) contents of the oils accounted for 653.0-696.5, 2.13-3.33 and 1.01-1 .11 mg kg-1 , respectively. The major fatty acids of the tested oils were: linoleic acid (29.90-31.70%), palmitic acid (29.50-31.20%), oleic acid (26.69- 28.19%) and stearic acid (4.90-6.10%). A small amount of cylcopropaneoctanoic acid with contribution up to 2.0% was also established. Most of the studied parameters of Sabz Pari and Punjab-8 H.esculentus seed oils were quite comparable with those of typical Hibiscus seed oils reported in the literature.
Page(s):
271-280
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Botany, Volume: 43, Issue: 1, Year: 2011