Subcritical extraction method using liquid ammonia as solvent
A subcritical, extraction technology, applied in solvent extraction, separation methods, chemical instruments and methods, etc., can solve problems such as unreported
Inactive Publication Date: 2010-12-15
HENAN YALINJIE BIOLOGICAL TECH
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Abstract
The invention relates to an extraction process of a subcritical solvent, in particular to a process method for extracting water soluble ingredients in some substances by using the liquid ammonia as a subcritical extraction solvent at a certain temperature and under a certain pressure. The extraction process comprises the following steps of: placing a water soluble ingredient-containing material to be extracted in a closed extraction container; and injecting the liquid ammonia into the closed extraction container for extraction. The method of the invention can be used for extracting various water soluble ingredients such as plant polysaccharide, plant polyphenol, alkaloid, plant total glycosides and pigments, the whole extraction and solvent removal process can be carried out at normal temperature or at a low temperature, and the extracted material is not required to be heated, so that the thermo-sensitive ingredients can be separated on the premise of keeping quality. The method also can be used for extracting biological medical ingredients of traditional Chinese medicinal materials or the juice of fresh plants.
Application Domain
Solvent extraction
Technology Topic
SolventAmount of substance +11
Examples
- Experimental program(7)
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