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时间:2019-05-24
《莲房原花青素对酪氨酸酶活力和黑色素生物合成影响的初步研究1》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据※营养卫生偿品面斗学2D04,场,五Ⅳoj,69A】cohOL1999.17:97-lU5【81M州cCw.MyhrsIadHC,010vN.F1avonoidsjncreaselheinlracellularg】”IalhjOne】cve】b,Iransacljvaljonorlhe91utamyloysteinosyntctasccatal”icaIsubunjtpromotcrplrreeRadicalnio¨删Mcdicjne.2002.32(5):386.39319】KimSRJung
2、PM.KyeongLee.etaIF1aVo∞jdsjnhibitl’e刊inph。90c”osisbymacrophagcs:st】1lctiVe-actiV时relationshlpscI】d)【J】njochcmicalPIlamacolo剁.2003.65:877-885【10】KarynM.MacIennan.CLDa—i”gton,P卜etaI_TheCNsefrectsofGinkgobilobacxtractsand画nkgo【jdcB⋯PrcgresslnNcurobi010肼2002
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4、liVerinj“ryintheⅢ【J】ArchiveSofBlochemis仃yandBlophysjcs2002.406:40_46.莲房原花青素对酪氨酸酶活力和黑色素生物合成影响的初步研究段玉清,刘睿,谢笔钧‘华中农业大学食品科学系天然产物化学研究室,湖北武汉430070)摘要:目的:探讨莲房原花青索(LsPc)对酪氪酸酶及其黑色素生物台成的抑制机理。方法:采用酪氨酸酶多巴速率氧化法体外测定药物干预前后酪氨酸酶活性.求出酪氨酸酶抑制率.并作出相应Lineweave卜Burk曲线,推断其抑制类型。结
5、果:莲房原花青素能显著抑制酩氨酸酶活性.其半抑制浓度Ic。为l1559,L。并能有效抑制形成黑色索的中间产物【。-多巴色素向黑色素转化其半抑制浓度Ic。。为1.7509,L。结论:莲房原花青素可抑制酪氨酸酶活性.且属于酪氨酸酶竞争性抑制剂。关键词:莲房;原花青索;酪氨酸酶;L.多巴PreparatorySrudy:Ef话ctofLSPCont11eTymsinaseActiVityandtheMelaninBiosynt
6、1esisofMelallinandtheTyrosinaseActiv时DUAN
7、Yu—Qing,UURiu,ⅪEBi-Jun州aturalProducIChemisI叮ResearchLaboratory,FoodScienceDepanmenlofHuazhongA舒icuItL】mIUnive吲ty,Wuhan430070,China)Abstract:ObjectiVe:Todiscu辐Ihcjnhjbitingnlechanisn1ofI,SPConthebiosynthesisMethods:TyrosinaseinhibjtingraIeisdete丌ninedandL
8、ineweaVer—BurkcurveismadebydelenTljninglhelvrosinaseacliviIybeforcandaRcrdmg(LSpCljntem卜enceoxidautofmelhod.onwhichwcdcduccthcjnhibiting1ypcsofLSPC.Results=LSPCcallinhjbj¨hety∞sjnaseaciivityrcmarkab【”帆htlleha㈣nhibjtjngconccntrationlc⋯1155∥L.andcane肺ctiwl
9、yinhibitthctransjtjon仟omdop扎Ihemedial-pmductionwhenme】anjnisfo丌ne‘l,tomelaninwiththehaIfjnh.biti雌concelltrationIcEn1.7509九,collclusion:LsPccaninhlbiIthetymsinaseactiv时anditisthccompetitiveinhIbi【orortyrosinaseKeywords:10ru
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