A drying method for reducing loss of active ingredients of epimedium sagittatum

CN122384459APending Publication Date: 2026-07-14JING BRAND
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Patent Information

Application Number
CN202610796634.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-04
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing technologies, when drying Epimedium sagittatum, are unable to effectively inhibit enzymatic hydrolysis and non-enzymatic browning without the need for additional chemical additives and complex pretreatment, resulting in severe loss of active ingredients and inconsistent quality of the medicinal material.

Method used

By coordinating the control of temperature, humidity and air velocity in the air-drying environment, and introducing a drying endpoint criterion based on the rate of change of moisture, the temperature is limited to no more than 30°C, the relative humidity to 50% to 60%, and the air velocity to 0.5 to 1.2 m/s. Combined with regular turning and sensory judgment, the drying is ensured to be thorough and uniform.

Benefits of technology

It significantly improves the retention rate of active ingredients, avoids uneven drying, dry outside and wet inside, and surface browning, ensures the integrity of the color and uniformity of moisture of the medicinal materials, is simple to operate and environmentally friendly, and is suitable for processing at the place of origin.

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Abstract

The application discloses a drying method for reducing loss of active ingredients of Epimedium sagittatum, and belongs to the technical field of traditional Chinese medicinal material processing. The method comprises the following steps: placing harvested Epimedium sagittatum medicinal materials in a shade drying environment, controlling the temperature to be not higher than 30 DEG C, the relative humidity to be 50% to 60%, and the air flow rate to be 0.5 to 1.2 m / s, and turning the medicinal materials during the shade drying; when the difference between two continuous moisture content detections every 10 to 14 hours is not more than 0.5 percentage points, and the hand kneading has no soft feeling and the cross section is crisp, the shade drying is stopped, and the moisture content of the medicinal materials is 12% to 13%. The application simultaneously inhibits endogenous enzymatic hydrolysis and non-enzymatic browning by synergistically regulating the temperature, humidity and air flow rate in the shade drying process without chemical reagent and physical inactivation pretreatment, significantly improves the retention rate of icariin, damianoside and other active ingredients, avoids mildewing and color deterioration, and stabilizes the quality of the obtained medicinal materials. The method can be selectively combined with steam fixation or microwave enzyme inactivation pretreatment to further improve the retention effect of the active ingredients.
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