简介:Cellaffinityisanimportantfactortobeconcernedwhenbiodegradablepolymericmaterialsareutilizedascellscaffoldintissueengineering.Manystudieshaveprovedthathydrophilicity,surfaceenergy,chargeandroughnessofthematerialsurfacegreatlyinfluencethecellattachmentandcellgrowthonthematerial.
简介:Oneofthechallengesinthefieldoftissueengineeringisthedevelopmentofbiomaterial/cellinteractions.Forthispurpose,theuseofbiologicalmaterialsintissueengineeringrequirestheapplicationofdifferentchemicalorphysicalproceduresforsurfacemodificationinordertoimprovethecellaffinityofbiomaterials.Wehavestudiedtheeffectsofonechemicaltreatmentandonephysicaltreatment:1-(3-dimethylaminopropyl)-3-ethylcarbodiimide(WSC)andentrapment.
简介:N-acetyl-D-methionine,NaAcandtheremainsofN-acetyl-L-methioninedramaticallyaffectthepurificationofL-methioninewhenpurifiedfromthemixtureofenzymaticallydeacylatedN-acetyl-DL-methionine,leadingtoalowyieldconventionally.Here,thispaperreportsasuccessfulseparationandpurificationofbothL-methionineandN-acetyl-D-methioninebyanHion-exchangecolumn.ThepH,L-Metconcentrationandtheratiobetweenthecontentofsodiumcationandtheion-exchangecapacitywereoptimizedtoobtainthemaximumyield.Experimentalresultsindicatethat,undertheoptimizedconditions,theyieldsofL-methionineandN-acetyl-D-methioninecanreachashighas85%and75%,respectively.