| Using gas chromatography and chemical titration methods, the acid value, peroxide value and characteristic indexes (relative density, refractive index, iodine value, saponification value and fatty acid composition) of 13 refined seabuckthorn oils from different producing areas and 3 seabuckthorn oils (seed oil, whole fruit oil and fruit oil) extracted from laboratory were measured and compared. The results showed that the acid value and peroxide value of 16 seabuckthorn oils met the requirements of relevant standards. The three characteristic parameters of refractive index (n40）, relative density （d2020）, and iodine value decreased in the order of seed oil, fruit oil and whole fruit oil. The saponification value was closer.Seabuckthorn seed oil was mainly composed of linoleic acid, linolenic acid, oleic acid and palmitic acid, and its content of unsaturated fatty acids was 87.4%-881%. Whole fruit oil was mainly composed of palmitic acid, palmitoleic acid, oleic acid and linoleic acid, and its content of unsaturated fatty acids was 62.9%-70.4%. The fruit oil was mainly linoleic acid, oleic acid and palmitic acid, and the content of unsaturated fatty acids was 81.9%-89.1%.Compared with the fatty acid composition of the three imported olive oils, the fatty acid composition of seabuckthorn oil was basically the same, but the ratio and content were quite different. The research shows that seabuckthorn oil is a kind of vegetable oil with rich nutrition and great development potential. |
