| http://www.w3.org/ns/prov#value | - d to, the use of water, polar solvents, such as ethanol and methanol, and their aqueous solutions.The extraction methods, using the solvents mentioned above, include heat reflux extraction (including soxhlet extraction), percolation and maceration at room temperature.The preferred solvent is water.The preferred extraction method is a heat reflux extraction.Based on the physical property of the raw
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