The oil contained in the Seabuckthorn seeds are significantly different in geographic regions and it is necessary to evaluate and make studies on the quality and quantity of Seabuckthorn oil in different regions depending on the criteria to discover natural ecotype and selective forms, usage of an additional raw material for producing the brand oils.

The natural Seabuckthorn oil studies in heights in Bayan-Ulgii Aimag have not been carried out, yet. Therefore, the oil analysis for samples collected from over 20 points in Altantsugts, Bugat, Bulgan and Tsengel Soums were determined by Agriculture Research Institute and National University of Mongolia in order to compare the Seabuckthorn fat in Khovd, Bulgan and Tsagaan rivers. Seabuckthorn oil of the rivers involved to the study in dry weight in autumn was 21.5% (16.9-30.0%), in winter 29.4% (18.7-34.6%) and in wet weight 3.77% (1.90-5.35%) and 4.56% (2.8-5.78%), respectively. The increase of 0.79% in winter is caused by the addition during the autumn. The dry weight of the fruit is 9.87-11.55%. Above indications were compared with the references determined by Mongolian and Russian joint researchers and were consistent with them and most of them were congruently. Fat content is uneven; therefore, it is possible that different natural types with their fat content could be discovered in the same river valley. Types of bigger fruit and more fat have been noticed in Tsagaan and Bulgan rivers. It was new aspect for the study that in points where the heights increase up to 1641-1986m the fruit fat content was increased with 2.8-5.0%. The seed oil in total rivers is 11.4% (9.4-14.0%) and it was emphasized that it is reverse content with 1000 seed weight. It is considered that repeated studies for the results mentioned above are necessary to carry out, continuously, especially to focus the biological active substances of the fruit oil which are vital for medicines and treatment.