hightemperature highpressure PARR reactor is proposed for optimizing the extraction of phenolic.docx
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hightemperature highpressure PARR reactor is proposed for optimizing the extraction of phenolic.docx
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hightemperaturehighpressurePARRreactorisproposedforoptimizingtheextractionofphenolic
Brassinosteroid:
abiotechnologicaltargetforenhancingcropyieldandstresstolerance ReviewArticle
NewBiotechnology,Volume26,Issues3-4,31October2009,Pages131-136
UdayK.Divi,PritiKrishna
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AbstractAbstract|Figures/TablesFigures/Tables|ReferencesReferences
Brassinosteroids(BRs)areagroupofnaturallyoccurringplantsteroidalcompoundswithwiderangingbiologicalactivity.BecauseBRscontrolseveralimportantagronomictraitssuchasfloweringtime,plantarchitecture,seedyieldandstresstolerance,thegeneticmanipulationofBRbiosynthesis,conversionorperceptionoffersauniquepossibilityofsignificantlyincreasingcropyieldsthroughbothchangingplantmetabolismandprotectingplantsfromenvironmentalstresses.GeneticmanipulationofBRactivityhasindeedledtoincreasesincropyieldby20–60%,confirmingthevalueoffurtherresearchonBRstoimproveproductivity.
ArticleOutline
Introduction
BRsignaling
BRbiosynthesisgenes
EngineeringBRlevelsandsensitivitytoincreaseyield
EngineeringBRlevelstoincreasestresstolerance
Futuredirections
Acknowledgements
References
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127
Serenoarepens:
TheScientificBasisfortheTreatmentofBenignProstaticHyperplasia ReviewArticle
EuropeanUrologySupplements,Volume8,Issue13,December2009,Pages887-893
FouadK.Habib
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Abstract
Context
Medicaltherapiesderivedfromnaturalsourceshavebeenusedforcenturies.Manyareaseffectiveassyntheticmedications.Theuseofplant-derivedmedicationsforbenignprostatichyperplasia(BPH)isnoexception.Inparticular,extractsofSerenoarepens(SrE),thefruitoftheAmericandwarfpalm,arewidelyavailable,andtheiruseisrisingthroughouttheworld.
Objective
TheunderlyingbasisforSrEpopularitystemsfromitssafetyandtolerabilityprofile.However,despiteitsextensiveuse,itsmechanismofactionhasnotbeendefinitelyclarified.Inthispaper,weanalysethescientificbasisforSrEefficacyinthetreatmentofBPHandexplorethemechanismsbywhichitseffectsareinduced.
Evidenceacquisition
ThisliteraturereviewfocusesontheactionsofthelipidosterolicSrEonahostoftargets.Severalcellularandmoleculartechniqueshavebeenusedtocharacterisethebiologicpathwaysthatmaymediatetheseactions.MorphologicstudieshavebeencarriedouttoidentifythechangesofprostateultrastructureandtodeterminemodificationsthatmayshedlightonthemechanismsunderlyingSrEefficacy.
Evidencesynthesis
SelectivityoftheactionofSrEfortheprostatehasbeendemonstrated.Thereareseveralmorphologicchanges,andtheseareaccompaniedbyanincreaseintheapoptoticindexofthegland,alongwithinhibitionoftheactivityofthe5α-reductaseisoenzymes.Thedrugalsoactsonanumberofotherbiologicsystemsandshowsacapacitytomoderatetheandrogenic,apoptotic,andinflammatorypathwaysofthecell.Thesepathwayshavebeenimplicatedinthehyperplasticprocess.
Conclusions
TheinteractionbetweenprostatecellsandSrEismanifestatseverallevelsofthegland'sbiologicalspectrumandresultsinantiandrogenic,anti-inflammatory,andproapoptoticeffects.TheseeffectsmayaccountforthebeneficialresponsetriggeredinsomepatientswithBPHtreatedwithSrE.
ArticleOutline
1.Introduction
2.Evidenceacquisition
3.Evidencesynthesis
3.1.OrganspecificityofSerenoarepens
3.2.AntiandrogenicactivitiesofSerenoarepens
3.3.Anti-inflammatorypropertiesofSerenoarepens
3.4.TheproapoptoticcharacteristicsofSerenoarepens
3.5.AreallbrandsofSerenoarepensequal?
4.Conclusions
Conflictsofinterest
Fundingsupport
References
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TakeHomeMessage
Serenoarepens(sawpalmetto)extractsarecomplexmixturesofcompoundsthatactsimultaneouslyonseveralbiologicpathwaysknowntobeassociatedwiththedevelopmentofbenignprostatichyperplasia(BPH)inman.ReversaloftheprohyperplasticpathwaysbythedrugaccountsforitsclinicalefficacyinthetreatmentofBPH.
128
Thefateandtoxicityoftheflavonoidsnaringeninandformononetininsoil OriginalResearchArticle
SoilBiologyandBiochemistry,Volume40,Issue2,February2008,Pages528-536
LizJ.Shaw,JohnE.Hooker
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Abstract
Theflavonoidclassofplantsecondarymetabolitesplayamultifunctionalroleinbelow-groundplant–microbeinteractionswiththeirbestknownfunctionassignalsinthenitrogenfixinglegume–rhizobiasymbiosis.Flavonoidsenterrhizospheresoilasaresultofrootexudationandsenescencebutlittleisknownabouttheirsubsequentfateorimpactsonmicrobialactivity.Therefore,thepresentstudyexaminedthesorptivebehaviour,biodegradationandimpactondehydrogenaseactivity(asdeterminedbyiodonitrotetrazoliumchloridereduction)oftheflavonoidsnaringeninandformononetininsoil.Organiccarbonnormalisedpartitioncoefficients,log Koc,of3.12(formononetin)and3.19(naringenin)wereestimatedfromsorptionisothermsand,aftercomparisonwithliteraturelog Kocvaluesforcompoundswhosesoilbehaviourisbettercharacterised,thetestflavonoidsweredeemedtobemoderatelysorbed.Naringenin(spikedat50 μg g−1)wasbiodegradedwithoutadetectablelagphasewithconcentrationsreducedto0.13±0.01 μg g−1attheendofthe96 htimecourse.Biodegradationofformononetinproceededafteralagphaseof
24 hwithconcentrationsreducedto4.5±1%ofthesterilecontrolafter72 h.Mostprobablenumber(MPN)analysisrevealedthatpriortotheadditionofflavonoids,thesoilcontained5.4×106 MPN g−1(naringenin)and7.9×105 MPN g−1(formononetin)catabolicmicrobes.Formononetinconcentrationhadnosignificant(p>0.05)effectonsoildehydrogenaseactivity,whereasnaringeninconcentrationhadanoverallbutnon-systematicimpact(p=0.045).Theseresultsarediscussedwithreferencetolikelytotalandbioavailableconcentrationsofflavonoidsexperiencedbymicrobesintherhizosphere.
ArticleOutline
1.Introduction
2.Materialsandmethods
2.1.Soilandflavonoids
2.2.Constructionofflavonoidsorptionisotherms
2.3.Flavonoidbiodegradation
2.4.Mostprobablenumberdeterminations
2.5.Dehydrogenaseassay
2.6.Highperformanceliquidchromatography(HPLC)
3.Results
3.1.Adsorptionisotherms
3.2.Biodegradationandmostprobablenumberanalysis
3.3.Naringeninandformononetinimpactsondehydrogenaseactivity
4.Discussion
4.1.Sorption
4.2.Biodegradationofnaringeninandformononetin
4.3.Toxicity
5.Conclusion
Acknowledgements
Appendix:
.Calculationofatotalsoilconcentrationfornaringeninfromanaqueousphaseconcentration,takingintoaccountnaringeninpartitioningbehaviourinsoil
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129
CatalyticremovalofNOandPAHsoverAC-supportedcatalystsfromincinerationfluegas:
Bench-scaleandpilot-planttests OriginalResearchArticle
ChemicalEngineeringJournal,InPress,CorrectedProof,Availableonline6March2011
Hui-HsinTseng,Chi-YuanLu,Feng-YimChang,Ming-YenWey,Han-TsungCheng
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Abstract
Fordioxinremovalfromincinerationfluegas,thecommonmethodisabsorptionusingactivatedcarbon(AC).Inordertoreducetheconsumptionofenergy,itisworthtoevaluatethedestructionremovalefficiency(DRE)ofNOandpolycyclicaromatichydrocarbons(PAHs)overACwithafewmetalsloadingwhiledioxinisphysicalabsorbedbyAC.Asaresult,inthepresentwork,theuseofACasacatalystsupportforsimultaneousNOreductionandPAHscatalyticoxidationwasinvestigatedasanalternativetechnologytoimproveincineratorprocesses.ThisstudyexaminedtheselectiveremovalofNOandPAHsfromincinerationfluegascontainingO2,N2,CO2,H2O,NO,organiccompoundsandflyashoverM/ACcatalysts(M = Fe,Co,Ni,andCu)usingbench-scaleandpilot-planttests.InvestigationsontheeffectsoftheincinerationfluegascompositionandthestructureofthemetalactivesiteonNOandPAHsconversionrevealedthattheconversionactivityincreasesastheatomicnumberofthetransitionmetalsincrease,exceptforNi.CarbonmonoxidecanactasareductanttoincreasetheNOremovalefficiency.TheM/ACcatalystsshowedhighreactivityforsimultaneousPAHsoxidationandNOreduction.TheresultsprovideusefulinformationforthedesignandapplicationofACinjectionorselectivecatalystreductionsystemsforwasteincinerationplants.
ArticleOutline
1.Introduction
2.Experimental
2.1.Catalystpreparation
2.2.Catalystcharacterization
2.3.Bench-scaletesting
2.4.Pilot-planttesting
3.Resultsanddiscussion
3.1.Catalystcharacterization
3.2.Bench-scaletesting:
effectofthechemicalstateoftheactivesite
3.3.Bench-scaletesting:
effectofgascomposition
3.4.Bench-scaletesting:
poisoningofM/ACcatalysts
3.5.Pilot-planttesting
4.Conclusions
References
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130
ChangesinapolarmetabolitesduringinvitroorganogenesisofPancratiummaritimum OriginalResearchArticle
PlantPhysiologyandBiochemistry,Volume48,Issues10-11,October-November2010,Pag
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