Method for extracting agilawood essence substance

By combining subcritical fluid extraction and molecular distillation with macroporous resin purification, the problems of high-temperature decomposition and impurity dissolution in the extraction of agarwood essential oil and agaritol were solved, achieving efficient, safe, and low-cost extraction of agarwood essence and obtaining high-purity agaritol products.

CN121102942APending Publication Date: 2025-12-12BEIJING YIXUANLING INSTITUTE OF MEDICAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511380494.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-25
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

Existing technologies for extracting agarwood essential oil and agaritol suffer from problems such as high temperature leading to component decomposition, impurity dissolution, high equipment costs, low extraction efficiency, and solvent residue, making it difficult to efficiently and safely preserve the natural aroma and bioactivity of agarwood.

Method used

A subcritical fluid extraction method using 1,1,1,2-tetrafluoroethane (R134a) as a solvent, combined with molecular distillation and macroporous adsorption resin purification, was used to extract agarwood essential oil and agaritol in fractions. High selectivity and high purity extraction were achieved through low-temperature extraction and high-vacuum separation, combined with ethanol extraction and resin purification.

Benefits of technology

It has achieved efficient extraction of agarwood essential oil and agaritol under low-temperature conditions, preserving the natural aroma and bioactivity, improving resource utilization, reducing equipment costs and environmental pollution, and obtaining high-purity agarwood essence.

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Abstract

The invention relates to the field of agilawood essence extraction, in particular to an agilawood essence substance extraction method which comprises the steps of raw material pretreatment, subcritical fluid extraction, molecular distillation purification, alcohol extraction and concentration and macroporous adsorption resin purification. According to the method, subcritical low-temperature extraction and molecular distillation technologies are combined, efficient, high-purity and sectional extraction of volatile essential oil and non-volatile essence substances in agilawood under the low-temperature condition is achieved, damage to thermosensitive components is effectively avoided, and no organic solvent is left.
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