Cold-pressed tobacco seed oil was stabilized by addn. of rosemary (1%). The oil showed a high content of linoleic acid in the total fatty acid pool (75%) and low content of saturated acids (16%). The fresh product met the quality stds. in terms of the acid value and peroxide no. (1.10 mg/g and 1.88 mmol/kg, resp.) but showed a low oxidative stability. The addn. of rosemary resulted in increasing the acid value and peroxide no. as well as an extension of the induction time (up to 3.2 h) by slowing down its oxidn.