Method for extracting fissistigma glaucescens alkali from marsdenia tenacissima

• Main Authors: WANG LIN, WANG FENG, ZHANG FACHENG
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2012
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention relates to a method for extracting fissistigma glaucescens alkali from marsdenia tenacissima, which has the advantages of simplicity and convenience in operation, small pollution and less energy consumption. The method comprises the following steps of: taking the marsdenia tenacissima; crushing the marsdenia tenacissima; adding the crushed marsdenia tenacissima to a CO2 (Carbon Dioxide) supercritical extractor; using ethyl acetate as an entrainer so as to obtain an extract; adding the extract to a D101 macroporous adsorption resin column to be adsorbed; eluting the extract by using 55% ethanol; collecting an eluent; decompressing the eluent to recycle the ethanol and concentrating and drying the eluent; adding the eluent to a silica gel chromatography column; eluting the concentrated and dried eluent by using a methanol-chloroform mixed solvent with volume ratio of 3:1; collecting and concentrating the eluent in parts by column volume; adding acetone to the eluent and then crystallizing the elue