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1、※包裝貯運食品科學2010,Vol.31,No.22467采后鈣處理對“安哥諾”李果實的貯藏效果及抗氧化能力的影響郭曉敏1,2,王友升1,2,*,王貴禧3,李麗萍1,2(1.北京工商大學植物資源研究開發(fā)北京市重點實驗室,北京100048;2.北京工商大學食品添加劑與配料北京高校工程研究中心,北京100048;3.中國林業(yè)科學研究院林業(yè)研究所,國家林業(yè)局林木培育實驗室,北京100091)摘要:探討不同采后鈣處理對“安哥諾”李果實的貯藏效果以及抗氧化能力的影響。結果表明:氯化鈣和丙酸鈣均能有效降低李果實的發(fā)病率,其中氯化鈣的作用效果更顯著,但對果皮與果肉色澤沒有顯著影響;乳酸鈣則加速李
2、果實的病害發(fā)生,降低李果皮a*值、果肉L*值與b*值,提高果肉a*值;三種鈣處理均誘導了采后李果實過氧化氫含量的積累,加劇了總抗氧化能力、超氧陰離子自由基清除能力、DPPH自由基清除能力的下降,提高了羥自由基清除能力,但李果實的腐爛率與過氧化氫含量和總抗氧化能力之間不存在顯著相關性。李果實總抗氧化能力、超氧陰離子自由基以及DPPH自由基清除能力與總酚、總黃酮含量呈極顯著正相關。關鍵詞:“安哥諾”李;鈣處理;抗氧化能力EffectsofPost-harvestCalciumTreatmentonQualityandAntioxidantActivityofAngelenoPlumFr
3、uitsGUOXiao-min1,2,WANGYou-sheng1,2,*,WANGGui-xi3,LILi-ping1,2(1.BeijingKeyLaboratoryofPlantResourcesResearchandDevelopment,BeijingTechnologyandBusinessUniversity,Beijing100048,China;2.BeijingHigherInstitutionEngineeringResearchCenterofFoodAdditivesandIngredients,BeijingTechnologyandBusinessUn
4、iversity,Beijing100048,China;3.StateForestryAdministrationKeyLaboratoryofTreeBreedingandCultivation,ResearchInstituteofForestry,ChineseAcademyofForestry,Beijing100091,China)Abstract:Theeffectsoftreatmentsusingcalciumchloride,calciumpropionateandcalciumlactateonqualityandantioxidantactivityofpo
5、st-harvestAngelenoplumfruitswereinvestigated.Resultsindicatedthatcalciumchlorideandcalciumpropionatecouldsuppressthedecayofpost-harvestplumfruitsat20℃andcalciumchlorideexhibitedstrongersuppressioneffect;whereas,nosignificanteffectonfruitcolorwasobserved.Incontrast,calciumlactatecouldpromotethe
6、decayrateandresultinthedeclineofa*valueofpeel,L*andb*valueofpulp,aswellastheincreaseofa*valueofpulp.Moreover,alltreatmentsusingcalciumagentscouldaffectoxidantandantioxidantsystemofplums,improvetheaccumulationofH2O2,acceleratethereductionoftotalantioxidantactivity,scavengingactivityofsuperoxide
7、anionandDPPHfreeradicals,aswellasincreasescavengingactivityofhydroxylfeeradicals.However,nosignificantcorrelationbetweendecayrateandH2O2concentrationortotalantioxidantactivitywasobserved.Moreover,totalantioxidantactivity,andscavengingac