《食品专业英语》课件-4 Pesticide+Residue+Risks+in+Agricultural+Products+and+Detection+Technologies

PesticideResidueRisksinAgriculturalProductsandDetectionTechnologies20XX01WhyPesticidesMatterinAgriculture02TheHiddenDangersofPesticideResidues03TheToolsWeUsetoDetectPesticideResidues04TheHurdlesWeFaceandWhat’sNext05ConclusionCONTENTSWhyPesticidesMatterinAgriculture01PART.Pesticidesprotectcropsfrompests,diseases,andweeds,ensuringwehaveenoughfood.Withoutthem,cropyieldswoulddropsignificantly.01EnsuringFoodSecurityWhileessential,improperuseofpesticidesleavesresiduesinfood,posinghealthandenvironmentalrisks.TheDouble-EdgedSwordThechallengeistousepesticideseffectivelywhileminimizingtheirnegativeimpactsonhealthandtheenvironment.BalancingActTheHiddenDangersofPesticideResidues02PowerPointDesignPART.Somepesticidesaccumulateinthebodyovertime,graduallyincreasinghealthrisks,especiallyinchildrenandpregnantwomen.CumulativeEffectsLong-termexposuretolowlevelsofpesticideresiduescanincreasetheriskofcancer,geneticmutations,andbirthdefects.ChronicToxicityHighlevelsofcertainpesticidescancauseimmediatehealthissueslikenausea,vomiting,anddizziness,affectingthenervoussystem.AcuteToxicityRiskstoOurBodies010203ImpactonBiodiversityPesticidesharmnon-targetspecieslikebeesandaquaticorganisms,disruptingecosystemsandbiodiversity.EnvironmentalPersistenceManypesticidesremainintheenvironmentforyears,affectingsoilhealth,waterquality,andthefoodchain.DisruptionofEcologicalBalancePesticidescandisruptthenaturalbalanceofecosystems,affectingpredator-preyrelationshipsandnutrientcycling.RiskstoOurPlanetTheToolsWeUsetoDetectPesticideResidues03PowerPointDesignPART.GasChromatography(GC)GCseparatespesticidecomponentsbasedonvolatilityandinteractionwithacolumnmaterial,suitablefordetectingvolatilepesticides.CombinedTechniquesTechniqueslikeGC-MSandHPLC-MScombinethestrengthsofchromatographyandmassspectrometryforcomprehensiveanalysis.High-PerformanceLiquidChromatography(HPLC)HPLCisidealfornon-volatileandheat-sensitivepesticides,offeringhighsensitivityandversatilitywithvariousdetectors.ChromatographicTechniquesUltraviolet-VisibleSpectroscopy(UV-Vis)UV-Vismeasureslightabsorptionbypesticidemolecules,providingaquickandcost-effectivedetectionmethod.01Fourier-TransformInfraredSpectroscopy(FT-IR)FT-IRanalyzesthechemicalbondsinpesticides,offeringinsightsintotheirstructureandaidinginqualitativeandquantitativeanalysis.02LimitationsSpectroscopictechniquescanbelesssensitiveandselectivecomparedtochromatographicmethods,requiringcarefulsamplepreparation.03SpectroscopicTechniquesEnzyme-BasedBiosensorsThesebiosensorsuseenzymesthatreactwithspecificpesticides,offeringrapidandportabledetectionsolutions.01Immunosensor-BasedDetectionImmunosensorsleveragethespecificbindingbetweenantibodiesandpesticidesforhighlysensitiveandselectivedetection.02AdvantagesandChallengesBiosensorsarefastandportablebutcanbeaffectedbyenvironmentalfactorsandrequirecomplexantibodyproduction.03Biosensor-BasedDetectionTechnologiesTheHurdlesWeFaceandWhat’sNext04PowerPointDesignPART.ComplexSampleMatricesAgriculturalsamplescontainmanycomponentsthatcaninterferewithaccuratedetectionofpesticideresidues.MultiplePesticideDetectionDetectingawiderangeofpesticidesinasinglesampleischallengingwithcurrenttechnologies.CostandAccessibilityManyadvanceddetectionmethodsareexpensiveandnotsuitableforsmall-scalefarmersorin-fieldmonitoring.Challenges010203MultifunctionalandIntegratedTechnologiesCombiningdifferentdetectionmethodswillenhanceaccuracyandcomprehensivenessinpesticideresiduedetection.MiniaturizationandPortabilityDevelopingminiaturizedandportabledeviceswillenablereal-time,on-sitemonitoringofpesticideresidues.InnovativeMaterialsandMethodsResearchintonewmaterialsandanalyticalmethods,suchasnanotechnologyandAI,willimprovedetectionsensitivityandefficiency.FutureTrendsConclusion05PowerPointDesignPART.01Pesticideresiduesposesignificantriskstohealthandtheenvironment.C