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The content of known tetraand pentacyclic diterpenoids in extracts of sunfl ower (Helianthus annuus L.) dry wastes has been studied using different solvents for extraction. It was established that the largest extracted quantity of ent-kaur-16-en-19-oic acid is obtained when ethanol and diethyl ether are used for extraction of the plant material.

Study on Extraction Process of Sunflower (Helianthus Annuus L.) Dry Wastes Using Different Solvents