The refraction index, iodine number and relative percentage of fat content of a series of industrial vegetable oils, their blends and oil extracts of dry crushed medicinal plant raw materials (St. John's wort, celandine and dandelion root) were studied by the method of refractometry. The influence of the nature, ratio and mixing order of components on the optical properties of the simulated oil compositions is shown. The selectivity of both individual extractant oils and their blends with respect to vegetable raw materials of different nature and its anatomical parts was noted.
vegetable oils, oil blends, oil extracts, vegetable raw materials, refractometry method
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