overthepastyears,electronicnosetechnologyopenedthepossibilitytoexploitinformationonbehavioraromatoassessfruitripening 
stage.theob-jectiveinthisstudywastoevaluatethecapacityofelectronicnosetomonitoringthechangeinvolatileproductionofmandarin 
duringdifferentpicking-date,usingaspeci?celectronicnosedevicepen2.principalcomponentanalysispcaandlineardiscriminant 
analysisldawereusedinordertoinvestigatewhethertheelectronicnosewasabletodistinguishamongdifferentpicking-dateripeness 
states.theloadingsanalysiswasusedtoidentifythesensorsresponsiblefordiscriminationinthecurrentpattern?le.theresultsobtained 
provethattheelectronicnosepen2candiscriminatesuccessfullydifferentpicking-dateonmandarinusingldaanalysis.but,electronic 
nosewasnotabletodetectacleardifferenceinvolatilepro?leonmandarinusingpcaanalysis.duringexternalvalidationusingldawas 
obtainedtoclassi?ed92%ofthetotalsamplesproperly.somesensorshavethehighestin?uenceinthecurrentpattern?leforelectronicnose 
pen2.asubsetoffewsensorscanbechosentoexplainallthevariance.thisresultcouldbeusedinfurtherstudiestooptimizethenumber 
ofsensors.