Study of essential oil components and some phytochemical characteristics of Salvia officinalis L. under infra-red and hybrid (infra-red- hot air) drying methods

Articles in Press

Document Type : Research Paper

Authors

1 Department of Horticultural science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

2 Department of Biosystem engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

10.22034/saps.2025.64389.3306

Abstract

Objectives: This study was conducted based on the importance of the essential oil of the sage in various industries, and the effect of infrared drying and the hybrid method (hot air-infrared) on the yield and components of the essential oil of the sage has not been yet investigated.
Materials and methods: Changes in essential oil compounds and some phytochemical properties under infrared drying treatments (0.4, 0.5, 0.6 W/cm2), combined (hot air-infrared) And the dry shade was investigated in the form of a completely random design with 3 replications.
Results: According to the results obtained, the best method to preserve the color quality of the medicinal sage was the infrared drying (0.4 W/cm2). Among the components of the essential oil, the amount of beta thujone compound in the infrared drying method is 0.4 W/cm2, and the maximum amount of camphor and alpha thujone compounds in the combined drying method (infrared 0.4 W/cm2 warm weather was 45 degrees). Also, the highest amount of 1,8-cineole compound was observed in shade drying. The highest amount of flavonoid was obtained in the combined drying method (infrared 0.4 W/cm2 - hot air 45 degrees). The highest amount of antioxidant activity was in the shade drying method with a slight difference in the combined drying method (infrared 0.4 W/cm2 - hot air 45 degrees).
Conclusion: Based on the obtained results, the combined drying method is recommended to maintain the quality of the appearance and the effective ingredients in sage essential oil.

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 22 July 2026

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