4葡聚糖硫酸酯的制备及其抗凝血活性Word文档格式.docx
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A文章编号:
0253-2417(2006)04-0001-05
PreparationandAnticoagulationActivityofβ1,4GlucanSulfate
WANGZhaomei,LILin,GUOSiyuan,XIAOKaijun
(ResearchInstituteofLightIndustryandChemicalEngineering,SouthChinaUniversityofTechnolage,Guangzhou510640,China)
Abstract:
Variousβ1,4glucansulfates(GS)weresynthesizedbysulfateofmicrocrystallinecellulose.Theirsulfatesubstitutedegree(Ds)variedintherangeof1.10to1.70.GSwithDsof1.70wasselectedforstructuralanalysisandanticoagulationinvestigation.IRspectrashowedtheintroductionofsulfategroupsbysulfation.13CNMRindicatedthatsulfationoccurredmainlyatC6,partiallyatC2andnosulfatesubstitutionoccurredatC3.Coagulationassaysshowedthat0.2mg/LGScouldsignificantlyprolongtAPTTandtTTinplasma.ThedosageofGSrequiredtodoubletAPTTofnormalhumanplasmawas0.7mg/L,lowerthanthatofheparinwiththeanticoagulationactivityof150IU/mg.Itspotentofanticoagulationinvitroreachedtheefficacyofheparinindefiniterangeofconcentration.ChromogenicanalysisrevealedthattheanticoagulationmechanismofGSwasmainlyduetotheinhibitionofthecoagulationfactorsⅡa&
XaactivitiesmediatedbyantithrombinATⅢ.
Keywords:
glucansulfate;
anticoagulation;
mechanism
E1级胶合板用脲醛树脂的13CNMR定量分析
金立维,王春鹏,周道兵,储富祥*,赵临五
(中国林业科学研究院林产化学工业研究所;
国家林业局林产化学工程重点开放性实验室,江苏南京210042)
采用13CNMR定量分析了由选定碱-酸-碱工艺所合成的E1级胶合板用脲醛树脂。
结果表明:
在初始碱性阶段有70.27%的甲醛分子转化成了羟甲基脲,24.83%的甲醛分子转化成了亚甲基醚键。
在随后的酸性缩聚阶段中,64%的羟甲基脲发生断裂,放出甲醛,缩聚成亚甲基键及亚甲基醚键。
在酸性阶段加入的第二批尿素与树脂中的游离甲醛形成羟甲基脲。
超过一半的亚甲基醚键在最后的碱性保温阶段发生分解,并与此时加入的第三批尿素生成羟甲基脲。
脲醛树脂;
羟甲基脲;
亚甲基醚;
胶合板
TQ323;
TQ433文献标识码:
0253-2417(2006)04-0006-05
Quantitative13CNMRAnalysisofUrea-formaldehydeResinforE1-typePlywood
JINLiwei,WANGChunpeng,ZHOUDaobing,CHUFuxiang,ZHAOLinwu
(InstituteofChemicalIndustryofForestProducts,CAF;
KeyandOpenLab.onForestChemicalEngineering,SFA,Nanjing210042,China)
Theureaformaldehyde(UF)resinsforE1typeplywoodsynthesizedbyspecificprocedurewerequantitativelyexaminedbythe13CNMRspectroscopy.Itwasprovedthat70.27%offormaldehydemoleculesweretransformedintohydroxymethylureaand24.83%formaldehydemoleculesweretransformedintomethyleneetherbondduringtheinitialalkalinereactionstage(pHvalue7.2-7.8).About64%ofhydroxymethylgroupsformedintheinitialalkalinereactionstagewerepolymerizedduringthesubsequentacidicreactionstage(pHvalue5.4-5.6)byformingmethyleneormethyleneetherbondsandreleasingsomeformaldehyde.Thefreeformaldehydeofresincouldreactwiththeseconddosageofureaduringthenextacidicreactionstage(pHvalue6.5-6.9)toformhydroxymethylureas.Morethanhalfofmethyleneetherbondsweredecomposedduringthelastalkalinecoolingstage(pHvalue7.5-8.0)andreactedwiththethirddosageofureatoformhydroxymethylurea.
ureaformaldehyderesin;
hydroxymethylurea;
methyleneether;
plywood
AH型非贵金属催化松香歧化反应动力学研究
王亚明,王路辉,蒋丽红,王震
(昆明理工大学生物与化学工程学院,云南昆明650224)
用AH型非贵金属催化剂催化松香歧化反应,考察了搅拌速率、催化剂粒度、反应温度、反应时间对反应的影响,建立了动力学方程。
确认在240~270℃范围反应为一级,求出在240、250、260和270℃时的反应速率常数分别为2.9×
10-3、3.1×
10-3、1.42×
10-2和2.51×
10-2min-1。
表观活化能E为184.80×
103kJ/mol,频率因子A=1.453×
1016。
AH型非贵金属催化剂;
松香歧化反应;
动力学方程
TQ351.47;
TQ426文献标识码:
0253-2417(2006)04-0011-03
ResearchonReactionKineticsofDisproportionationofGumRosinCatalyzedbyAHNonnobleMetalCatalyst
WANGYaming,WANGLuhui,JIANGLihong,WANGZhen
(InstituteofBiologicalandChemicalEngineering,KunmingUniversityofScienceandTechnology,Kunming650224,China)
ThereactionofdisproportionationofgumrosincatalyzedbyAHnonnoblemetalcatalystwasstudied,andtheeffectsofreactiontemperature,reactiontime,particlesizeofcatalyst,andstirspeedwereinvestigated.Itwasfoundthatthereactionwasofthefirstorderat240-270℃.Reactionrateconstantswere2.9×
10-3,3.1×
10-3,1.42×
10-2,2.51×
10-2min-1at240,250,260and270℃,respectively.ApparentactivationenergyEwas184.80×
103kJ/mol,frequencyfactorAwas1.453×
1016.
AHnonnoblemetalcatalyst;
disproportionationofgumrosin;
kineticequation
FolinCiocalteu比色法测定橄榄中多酚含量的研究
何志勇,夏文水*
(江南大学食品学院,江苏无锡214036)
采用FolinCiocalteu比色法研究了橄榄多酚的定量测定方法。
橄榄多酚提取液在加入FolinCiocalteu试剂1.5mL、10%Na2CO36mL、反应时间2h、温度30℃的条件下进行显色,并于765nm处测定其吸光值,多酚质量浓度在7~70mg/L范围内与吸光值有良好的线性关系,根据此线性回归方程进行橄榄多酚的定量测定,该方法简单方便、稳定性好、准确度高。
橄榄;
多酚;
比色法
TQ351.014文献标识码:
0253-2417(2006)04-0015-04
StudyonDeterminationofPolyphenolContentinCanariumalbum(Lour.)Rauesch.byFolinCiocalteuColorimetry
HEZhiyong,XIAWenshui
(SchoolofFoodScienceandTechnology,SouthernYangtzeUniversity,Wuxi214036,China)
AquantitativedeterminationmethodofpolyphenolfromCanariumalbum(Lour.)Rauesch.wasstudiedbyFolinCiocalteucolorimetry.TheresultsshowedthatpolyphenolcontentofC.albumcouldbewellcalculatedaccordingtotheircolorimetricabsorptionat765nmbyapplyingFolinCiocalteureagent1.5mLand10%Na2CO36mL,2hat30℃forcolorimetricreaction,andthelinearrangeofstandardcurvewas7-70mg/L.Themethodestablishedwasveryconvenient,stableandaccurate.
Canariumalbum(Lour.)Rauesch.;
polyphenol;
colorimetry
雷公藤抗肿瘤三萜成分的研究
杨光忠1,李援朝2
(1.中南民族大学生命科学学院民族药物研究所,湖北武汉430074;
2.中国科学院上海生命科学院上海药物所,上海201203)
研究雷公藤根心部分的化学成分。
采用硅胶柱色谱法进行分离,从其氯仿提取物中分得9个三萜化合物,经波谱分析鉴定为雷公藤素D
(1),雷公藤素E
(2),直楔草酸(3),雷公藤素H(4),22-β-羟基-3-氧代-12-齐墩果烯-29-羧酸(5),雷公藤三萜酸C(6),雷公藤素G(7),雷公藤酸A(8),雷公藤醇A(9)。
抗肿瘤生物活性体外筛选实验表明:
化合物7和9对P-388小鼠白血病细胞株的生长表现出强的抑制率,化合物1对A-549人肺腺癌表现出强的抑制率。
卫矛科;
雷公藤;
三萜;
抗肿瘤生物活性
TQ91文献标识码:
A文章编号:
0253-2417(2006)04-0019-04
AntitumorTriterpenoidsfromTripterygiumwilfordiiHook.f.
YANGGuangzhong1,LIYuanchao2
(1.NationalMedicineInstitute,CollegeofLifeSciences,SouthCentralUniversityforNationalities,Wuchang430074,China;
2.ShanghaiInstituteofMateriaMedica,ShanghaiInstituteforBiologicalSciences,ChineseAcademyofSciences,Shanghai201203,China)
TostudytheactiveprinciplesofTripterygiumwilfordiiHook.f.,ninetriterpenoidswereisolatedfromthisplantbycolumnchromatographywithsilicagel.TheirstructureswereidentifiedastriptotinD
(1),triptotinE
(2),orthosphenicacid(3),triptotinH(4),22βhydroxy3oxoΔ12oleanen29oicacid(5),triptotri
terpenicacidC(6),triptotinG(7),wilforicacidA(8)andwilforolA(9).Compounds7and9showedstronginhibitionagainstP388ratleukaemiacellline.Compound1showedstronginhibitionagainstA549adenocarcinomacelloflung.
Celastraceae;
tripterygiumwilfordiiHook.f.;
triterpenoids;
antitumorbioactivities
红花忍冬的三萜类成分研究
钱正明,李会军,李萍*,贺清辉,齐芳芳
(中国药科大学生药学教研室;
现代中药教育部重点实验室,江苏南京210038)
对红花忍冬地上部分进行化学成分研究。
分离鉴定了5个三萜类化合物:
葳岩仙皂苷C
(1)、木通皂苷D
(2)、木通皂苷F(3)、熊果酸(4)和常春藤皂苷元(5)。
经文献检索,5个化合物均为首次从该种植物中分离得到,其中化合物4系首次从该属植物中分得。
红花忍冬;
三萜
TQ91文献标识码:
0253-2417(2006)04-0023-03
TriterpenoidsfromtheAerialPartsofLonicerasyringanthaMaxim.
QIANZhengming,LIHuijun,LIPing,HEQinghui,QIFangfang
(DepartmentofPharmacognosy;
ChinaPharmaceuticalUniversityandKeyLaboratoryofMordenChineseMedicines,MinistryofEducation,Nanjing210038,China)
TriterpenoidsfromtheaerialpartsofLonicerasyringanthaMaxim.werestudied.FivetriterpenoidswereisolatedandtheirstructureswereidentifiedtobecaulosideC
(1),akebiasaponinD
(2),akebiasaponinF(3),ursolicacid(4)andhederagenin(5).Compound4wasisolatedfromthegenusLoniceraforthefirsttimeandall5compoundswerefirstisolatedfromthespeciesofthisplant.
LonicerasyringanthaMaxim.;
triterpenoids
负载铜活性炭催化剂制备及催化氧化印染废水
李伟峰1,祝社民2,宋天顺1,陈佯1,陈英文1,沈树宝1*
(1.南京工业大学制药与生命科学学院,江苏南京210009;
2.南京工业大学材料科学与工程学院,江苏南京210009)
对以ClO2氧化印染废水用的负载铜活性炭催化剂制备工艺进行了研究。
实验结果表明:
该催化剂的最佳制备工艺为:
酸浸液浓度2.5mol/L,浸渍12h;
硝酸铜浸渍液质量分数7.5%,浸渍后活性炭先室温干燥,后80℃烘干,再在280℃下焙烧3h。
并通过对实际印染废水的处理确定了最佳催化氧化工艺。
失活催化剂经再生处理,可恢复约90%的催化活性。
二氧化氯;
活性炭;
催化氧化;
印染废水
TQ426;
O643.3文献标识码:
0253-2417(2006)04-0026-05
PreparationandApplicationofCopperloadedActivatedCarbonCatalystforCatalyticOxidationofDyeWastewater
LIWeifeng1,ZHUShemin2,SONGTianshun1,CHENYang1,CHENYingwen1,SHENShubao1
(1.CollegeofLifeScienceandPharmacy,NanjingUniversityofTechnology,Nanjing210009,China;
2.CollegeofMaterialScienceandEngineering,NanjingUniversityofTechnology,Nanjing210009,China)
Thecatalyst,whichiscomposedofactivatedcarbonascarrierandloadedwithcopperoxide(CuO)asactivecomponent,wasmadeandmainfactorsinthepreparationofthiscatalystwerefurtheranalyzed.Undertheoptimizedpreparationconditionofnitricacid2.5mol/L,soakingtime12h,concentrationofCu(NO3)27.5%,calcinationtemperature280℃for3h,theoptimumcatalyticactivitycouldbeobtained.Thebestcatalyticoxidationprocessofdyewastewatertreatmentwasalsoinvestigatedbythiscatalyst.Theregenerationprocessofdeactivatedcatalystwasalsoinvestigatedandtheactivityofregeneratedcatalystwasrecoveredtoabout90%.
chlorinedioxide;
activatedcarbon;
catalyticoxidation;
dyewastewater
桐油酸酐酰亚胺环氧树脂耐热性研究
商士斌,王丹,高宏,王定选
(中国林业科学研究院林产化学工业研究所;
国家林业局林产化学工程重点开放性实验室,江苏南京210042)
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