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1、Anthocyaninsandfruitcolourinplums(PrunusdomesticaL.)duringripeningUniversityofLjubljana,BiotechnicalFaculty,AgronomyDepartment,ChairforFruitGrowing,Jamnikarjeva101,Ljubljana,SloveniaAbstract；Theaccumulationofanthocyaninsandtheevolutionoffruitcolourwereinvestigateddu
2、ringripeningofPrunusdomesticaL.UsingHPLC,thefruitofthe‘Jojo’,‘Valor’,‘Cacanskarodna’and‘Cacanskanajbolja’cul-tivarswerequantiedforanthocyaninsduringa25-dayperiodofripening(a33-dayperiodinthecaseof‘Jojo’).Themajoranthocyaninwascyanidin3-rutinosidewhich,inripefruits,r
3、angedfrom4.1to23.4mg/100gFW(from52.6%to73.0%).Itwasfollowedbypeonidin3-rutinoside(from6.5%to37.9%),cyanidin3-glucoside(from1.8%to18.4%),cyanidin3-xyloside(from4.7%to7.8%)andpeonidin3-glucoside(from0.0%to0.4%).Theripeningprocessresultedinaconcentrationincreaseoftotal
4、anthocyaninsandchangedtheratiosamongsttheanthocyanins.Thecolourparameters,L*,a*,b*,chromaandhueangle,ofpartiallyripeplumswerehigherthanthoseintheripefruit,buttheCIRGindexofpartiallyripefruitwasalwayslowerthanthatofripefruit.Thetotalanthocyaninswereweaklycorrelatedwi
5、theachofthecolourparameters;theirrelationshipsvariedbetweencultivarsandripeningstage.Correlationcoefcientsbetweenindividualanthocyaninsandcolourparametersinripeplumswerecultivar-dependent.2008ElsevierLtd.Allrightsreserved.1.IntroductionAnthocyaninsrepresentagroupofw
6、idespreadnaturalphenoliccompoundsinplants,andareresponsiblefortheircolours(Mazza&Miniati,1993).Colouristhemostimportantindicatorofmatu-rityandqualityinmanyfruitspecies(Drake,Proebsting,&Spayd,1982).Itismainlyinuencedbytheconcentrationanddistributionofvariousanthocya
7、ninsintheskin(Gao&Mazza,1995),aswellasbyotherfactors,suchaslight,temperature,ethylene,andculturalpractices(Lancaster,Lister,Reay,&Trigs,1997).Theinuenceofripenessontheaccumulationofanthocyaninsandontheevolutionofcolourhasbeenanalysedinsweetcherries(Gonalvesetal.,200
8、7)andgrapes(Ryan&Revilla,2003).Thechromaticparame-ters,L*,a*,b*,chromaandhueangle,correlatednegativelywiththetotalanthocyaninlevelsinsweet
