1苦参生物碱的提取及氧化苦参碱的纯化(5)

时间:2026-01-16

山东大学硕士学位论文

K-1.03+9.62x10-221—0.61X3+7.46x10-2z;一1.10×104XlX2

+2.21x10“x;一2.72x10-3x;+6.48x10。x1X2Ⅳ3

Thereinto:y1representsSFEextractionrate;Xt X3representsSFE

pressure,temperatureandextractiontimerespectively.

Thecorrelationequationbetweenmatrine-typealkaloidsrecoveryandSFEextractionconditions:

L一一2.11+0.133Xl+6.44x10-2X2—2.40x104zl彳2—8.76x10.4X223-3.03x104JlZ,

Thereinto:I"2representsmatrine-typealkaloidsrecovery;X1 X3representsSFEpressure,temperatureandextractiontimerespectively.

Byoptimizingtheexperimentaldata,thehighestSFEextractionrateof2.3%hasbeenobtainedwithcorrespondingSFEconditions35MPa.35。Candextractiontime8hours.Thehighestmatrine-typealkaloidsrecoveryof1.96%hasbeengainedwithcorrespondingSFEconditions12MPa.75℃andextractiontime2hours.There

conditions.

ItwascomparedthattheprocessesofseparationandpurificationofarenodirectrelationsbetweenabovetwoSFEoxymatrineinthemixedmatrine—typealkaloidsobtainedthroughthesecondextractionrouteandsolventextraction.Itwasconcludedthatmoresimplifiedseparationprocess,morepurifiedoxymatrineandmorestablecrystalcouldbeobtainedapplyingthesecondroute.Furthermorelessorganicsolventwereconsumedandtherecoveryofmatrine—typealkaloidsafterseparationcouldreach0.914%,whichwas4.5timesofsolventextractionmethodof0.212%.

Theoxidationreactionoftotalmatrine-typealkaloidswithsecondmethodwasstudiedpreliminarilyinthispaper.Theinfluenceofreactionconditionssuchasreactiontemperature,themolarrate

onofH202comparedtomixedmatrine—typealkaloidsandreactiontimereactiondegreewasexplorerd.

Throughexperimentsmatrinecouldbetransformedintooxymatrinetotallyat

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