Physicochemical Properties of Medicinal and Aromatic Viburnum L. Species Seed Oils

Abstract

The aim of this study is to determine the physicochemical properties of the seed oils of Viburnum L. species collected from different locations in Turkey over two consecutive years. For this purpose, Viburnum opulus L., Viburnum lantana L., Viburnum orientale Pallas and Viburnum tinus L. species growing naturally in Turkey were used. In this direction, the average values of Viburnum L. species seed oils in harvest years; specific gravity, refractive index, color, viscosity, boiling point, free fatty acidity, peroxide number, iodine number, saponification number and unsaponifiable matter number are; 0.92-0.93 g/cm³, 1.4760-1.4775 n_D, 4.20-10.70 (red), 2.40-70.00 (yellow), 63.90-75.57 mPa, 182.79-187.57°C, 0.74-1.36%, 10.38-17.82 meq O₂/kg, 117.35-134.18 wijs, 183.45-243.70 mg KOH/g, varied between 1.06-1.94%. The harvest year average values of palmitic acid, oleic acid, linoleic acid and linolenic acid contents of Viburnum L. species seed oils were determined as 1.99-8.95%, 29.33-57.95%, 35.43-55.98%, 0.17-0.50%, respectively. Also, seed oils were analyzed with FTIR and DSC. In line with these results, it was determined that the physicochemical properties of seed oils of Viburnum L. may vary depending on the species and harvest year and the obtained seed oils can be used as food supplement and vegetable oil in the food industry.

graphical abstract