现代食品科技ModernFoodScienceandTechnology2023,Vol.39,No.679采后草酸处理对杏果实黑斑病的控制及苯丙烷代谢的影响马海娟，张昱，张亚琳，石苗苗，任玉琴，芦玉佳，张文娜，朱璇*（新疆农业大学食品科学与药学学院，新疆乌鲁木齐830052）摘要：为探究草酸对杏果实采后黑斑病的控制效果，该试验以“赛买提”杏为试材，采用2、4、6mmol/L草酸对杏果实进行减压渗透处理，晾干后，置于温度和湿度为（1±1.0）℃、90%~95%的条件下，贮藏48h后，损伤接种交孢链格孢（Alternariaalternata，A.alternata）并在相同条件下贮藏。定期测定苯丙烷代谢相关指标，孢子萌发率、菌落直径。损伤接种试验结果表明，在第49天时，与对照组相比，4mmol/L草酸处理组接种发病率与病斑直径分别低了16.94%、19.44%。4mmol/L草酸处理组的苯丙氨酸解氨酶（PAL）、4-香豆酸辅酶A连接酶（4CL）、肉桂酸-4-羟化酶（C4H）活性是对照组的1.06、1.04、1.07倍，有效促进了总酚、类黄酮、木质素含量的积累；体外试验结果表明，4mmol/L草酸对A.alternata孢子萌发和菌丝生长有明显抑制作用。结果表明草酸处理可通过诱导苯丙烷代谢途径来增强杏果实对黑斑病的抗性。关键词：草酸；杏果实；苯丙烷代谢；采后病害文章编号：1673-9078(2023)06-79-85DOI:10.13982/j.mfst.1673-9078.2023.6.0736EffectsofPostharvestOxalicAcidTreatmentsonBlackSpotDiseaseandPhenylpropaneMetabolisminApricotFruitMAHaijuan,ZHANGYu,ZHANGYalin,SHIMiaomiao,RENYuqin,LUYujia,ZHANGWenna,ZHUXuan*(CollegeofFoodScienceandPharmacy,XinjiangAgriculturalUniversity,Urumqi830052,China)Abstract:Theinhibitoryeffectsofoxalicacidonpostharvestblackspotdiseaseinapricotfruitwereinvestigatedbysubjecting“Saimaiti”apricotfruittopressureretardedosmosisusingthreedifferentconcentrationsofoxalicacid(2,4,and6mmol/L).Subsequently,thedriedfruitwerestoredfor48hatatemperatureof(1±1.0)℃andahumidityof90%~95%.Next,damagedfruitwereinoculatedwithAlternariaalternata,andwerestoredunderthesameconditionsdescribedabove.Indicesrelatedtophenylpropanemetabolism,includingsporegerminationrateandcolonydiameter,wereregularlymeasured.Theinoculationtestresultsdemonstratedthat,onthe49thday,theincidencerateandlesiondiameterofthe4mmol/Loxalicacid-treatedinoculatedfruitwere16.9...
