Fresh samples of aromatic plants such as sage and rosemary were used for the essential oil extraction process optimizing.Single-factor experiments and orthogonal tests were employed within the steam distillation process promoting.The optimal extraction conditions for sage were found to be a liquid-to-solid ratio of 1∶25 g·mL-1,extraction time of 0.5 hours,and extraction performed twice,yielding an essential oil rate of 5.17‰.For rosemary,the best conditions were a liquid-to-solid ratio of 1∶20 g·mL-1,extraction time of 2 hours,and extraction performed twice,resulting in the highest essential oil yield of 8.87‰.These findings provide theoretical support for the extraction and application of essential oils from sage and rosemary.
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