Abstract:Changesinthemillingquality,chemicalcharacteristics,eatingqualityanddynamicviscoelasticitiesofsevencultivarsofjapoinicariceafterabouteightmonthsstorageatroomtemperaturewerestudied.Comparisonsbetweennewandstoredricesshowedthatnoobviouschangesinmillingquality,amyloseandproteincontentwerefound.Thoughtherewasvarietaldifference,thepalatabilityofallcultivarsdeterioratedwithstorage.TheoveralleatingqualityofKoshihikariandEtsunan162storedricewerealmostthesameasthatofnewriceofNihonbareandXiushui11.Thedeteriorationinpalatabilitywasduetothedeteriorationoftheappearance,tasteandstickinessofcookedrice.Newricegrainfromcultivarswithagoodeatingqualityshowedarelativelyhighpalatabilityascomparewithstoredrice.Themoduliofcookedricegrainsofstoredricewereincreasedandvaluesoflosstangentofcookedricewaslowerthanthoseofnewrice,suchcasesinpoorpalatabilitycultivarsweremuchmoreobvious.Theeatingqualityofstoredricewasgenerallypoorforthecultivarswithahighfreefattyacidcontent.Inaddition,thebreakdownandmaximumviscosityvaluesinamylographiccharacteristicswereslightlyincreased.
