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超声辅助提取紫甘蓝中原花青素工艺的优化(英文).docx

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超声辅助提取紫甘蓝中原花青素工艺的优化(英文) OptimizationofUltrasonic-AssistedExtractionofAnthocyaninsfromPurpleCabbage Abstract Anthocyaninsareagroupofnaturalpigmentswithvarioushealthbenefits.Purplecabbageisarichsourceofanthocyanins.Inthisstudy,ultrasonic-assistedextraction(UAE)technologywasemployedtoextractanthocyaninsfrompurplecabbage.Theeffectsofdifferentfactors,includingextractiontime,temperature,solvent-to-solidratio,andultrasonicpower,ontheextractionefficiencywereinvestigated.TheresultsshowedthattheoptimalconditionsforUAEofanthocyaninsfrompurplecabbagewereasfollows:extractiontimeof50min,extractiontemperatureof50°C,solvent-to-solidratioof20:1(mL/g),andultrasonicpowerof280W.Undertheseconditions,theyieldofanthocyaninswasupto46.7mg/gdryweight.Theextractedanthocyaninswereanalyzedbyhigh-performanceliquidchromatography,andsixmajoranthocyanincompoundswereidentified,includingcyanidin-3-O-glucoside,cyanidin-3-O-rutinoside,peonidin-3-O-glucoside,peonidin-3-O-rutinoside,pelargonidin-3-O-glucoside,andmalvidin-3-O-glucoside.Thisstudyprovidesatheoreticalbasisfortheutilizationofpurplecabbageasasourceofanthocyaninsinfoodandmedicine. Keywords:Ultrasonic-assistedextraction,anthocyanins,purplecabbage,optimization Introduction Anthocyaninsareaclassofwater-solublepigmentswidelydistributedinplants.Theyareresponsibleforthered,purple,blue,andblackcolorsoffruitsandvegetables.Anthocyaninsexhibitvariousbiologicalactivities,includingantioxidant,anti-inflammatory,anti-cancer,andcardiovascularprotectiveeffects(1-3).Hence,theconsumptionofanthocyanin-richfoodshasbeenassociatedwithareducedriskofchronicdiseases. Purplecabbage(Brassicaoleraceavar.capitataf.rubra)isavegetablewithhighnutritionalvalue.Itcontainsavarietyofvitamins,minerals,andphytochemicals,suchasanthocyanins.Anthocyaninsinpurplecabbagemainlyincludecyanidin-3-O-glucoside,cyanidin-3-O-rutinoside,peonidin-3-O-glucoside,peonidin-3-O-rutinoside,pelargonidin-3-O-glucoside,andmalvidin-3-O-glucoside(4).Theextractionofanthocyaninsfrompurplecabbagehasattractedm