aP]aMPMe[ru力ss圧erP[ ]579 ● （Fish scale）（Mushroom）and Supercritical water（SCW)0.1(常圧)Ambient condition100温度[?C]pHpOHPressure24MPaTemperature[oC]The neutral pH of water is controlled by temperature and pressure.High-temperature waterWaste BiomassLignin(Wood）FunctionalMaterialsPhenoliccompoundsProteinCollagenPeptideβ-GlucanOligo-saccharideChitin（Crab）1140060025200ProfessorOHKAWAKousakuAftergraduatingfromtheFunctionalPolymerScienceCourseattheFacultyofTextileScienceandTechnology(FTST)andcompletingthefirstsemesterofadoctoralprogramattheGraduateSchoolofOhkawaparticipatedinagraduatecourseofferedbytheUniversityofTokyo’sGraduateSchoolHesubsequentlyreturnedtotheInstituteofHighPolymerResearch(IHPR)runbytheFTSTatShinshuUniversityin1996asanassistantprofessorandlatersubmittedhisdoctoralthesistotheUniversityofTokyo(DoctorateofScience,1998).HewaspromotedtoassociateprofessorattheIHPRin2003.HishasservedasaprofessorintheDivisionofBiologicalandMedicalFibersattheInstituteforFiberEngineering(IFES)atShinshuUniversitysince2014.ProfessorOSADAMitsumasaPh.D.TohokuUniv.Japan.2005.Assoc.Prof.IchinosekiNationalColl.ofTech.2006-2014.VisitingScholar,theUniversityofMichigan,USA.2007-2008.Assoc.Prof.ShinshuUniv.2014-2023.Prof.ShinshuUniv.2024-.ProfessorEngineering,BiologicalScience.AnadvantageofbiomassconversioninHTWandSCWisthathotwatercanserveasasolvent,areactant,andacatalyst.Whilemanybiomass(e.g.,proteinandchitin)arenotwater-solubleatambientconditions,mostarereadilysolubilizedinHTWorSCW.Inaddition,H+andOH-concentrationsofHTWarehigherthanthoseofambientwaterandtheacidorbasecatalyzedreactionsproceedwithoutaddingcatalysts.Studentswouldworkatchemical,food,andpharmaceuticalcompaniesasanengineerandaresearcher.Ihopethatthestudentswillmakethebiggestimpactinthefieldofnewenvironmentalbenignchemicalengineering.inthe27NanofiberproductionfromunusedagriculturalresourcesTheAsiangreenmusselcreatesthisstrangebyssusfiberunderwater.Byssusfibersaregeneratedbytheadhesivediskattheend(left:thestickypart),thedistalsection(center:ahard,strongfiber),andtheproximalsection(right:atough,strongfiber).InvestigationofHTWandSCWasnewchemicalreactionfieldFunctionalMaterialsbiomassfromwasteSCW超臨界水超臨界流体超臨界水とはCritical 臨界点Point22.1 Liquid液体Solid固体Gas気体3740Temperature [?C]Outlook for researchLivingorganismsleveragetheiracquiredknowledgetocreateexceptionalfibersinthewater.Thereisagreatdealthatresearcherscanlearnfromfibermaterialscreatedbylivingorganisms.Thisknowledgewillleadtothefibermaterialengineeringofthefuture.Outlook for students after graduationGraduatesareemployedasR&Dengineersbymanufacturesfollowingbusinesses:spinning;fiberproductionnon-wovenmaterialproduction;foodingredientproduction;sportsproductproduction;plasticprocessing;processing,manufacture,andsaleofnaturalpolysaccharides;andchemicalproductmanufacturing.involvedOutlook for researchOutlook for students after graduationIamcarryingoutbioscienceandbiochemicalresearchintofibersmadebyorganismsthatliveinwater.MyresearchprimarilycoversthephylaMolluscaandArthropoda.Bivalveclamsthatliveintheoceancreateatypeoffibercalledbyssus.ProductionofFunctionalMaterialsfromBiomassbyUsingOnlyWaterBiomassconversioninhigh-temperaturewater(HTW)andsupercriticalwater(SCW)hasbeenstudied.HTWreferstowaterinitsliquidstatebelowitscriticaltemperatureandpressure(374?C,22.1MPa),whereasitbecomesahighlycompressiblefluidcalledSCWabovethispoint.Wearealsousingawaterjetmachineforwetpulverizetreatmentofbiomass.Wateristhemostenvironmentallybenignsolvent.Thetargetbiomassarewood(lignin),fishscale(protein),squidpen(chitin).Forexample,wearetryingtoproducechitinnanofiberfromsquidpenbyawaterjetmachine.Chemistry and MaterialsChemistry and MaterialsDepartment ofDepartment ofExploring the future of biochemical research
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