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:2005-02-28:(2002S004):(1938-),,:1,1,1,2,2,1,2,1(1.,350003;2.,366200):(1000mgkg-1)(60%-70%)(15%),-,,(10mgkg-1)(40%)()(20%),,,;,,,:;;;-:S531:A:167320925(2005)0220055206ResearchonnewtechniquesfordriedsweetpotatoprocessingWENGRen2fa1,YANGZhou2ya1,SHINeng2pu1,LIUJin2lian2,LIUGuo2dong2,XUFu2le1,JIANGJi2zhen2,WUCheng2yong1(1.TechnologyResearchInstitute,FujianChaodaModernAgricultureGroup,Fuzhou,Fujian350003,China;2.FujianChaodaLi2anchengFoodCo.,Ltd.,Liancheng,Fujian366200,China)Abstract:Thetraditionalwaytoprocessdriedsweetpotatohasfourdefects,i.e.highsulfurcontent(1000mgkg-1),highsugarcontent(60%-70%),highbacterianumberandlowmoisture(15%).Theadvancedtechnologiesdevelopedbythere2searchprojectincludedesulfuratedfixative,ozonesterilizationandsterilizingbymicrowave-steam.Thesetechnologieshavebeenappliedtoproducehighqualitydriedsweetpotatoproductsthathavelowsulfurcontent(10mgkg-1),lowsugarcontent(themaximumcontentisabout40%only),lowbacterianumber(wellmeetthecommercialstandards)andhighmoisture(over20%).Commercialproductionhasprovedthatnewtechnologiesarereliable,safe,easytooperateandconvenientforautomaticproduction.Newproductshavethecharacteristicsofsafety,sanitationanddainty.TheyaresalableinthemarketsofJapan,KoreaandAmericaetc.Keywords:driedsweetpotato;desulfuratedfixative;ozonesterilization;sterilizingwithmicrowaveandsteam(),500g2654300J,11.5g,145g,VB106mg,6.55mg,VC150mg,2.5mg,100mg,90mg,2mg,17VB1VB22,VE9.5,10,VAVC,,,,,,()[1]670hm2,3000t,;28hm2,136t,;,0.67hm2,20t,,(1000mgkg-1)(60%-70%)(12SubtropicalAgricultureResearch20055)(15%),,3,,,11.1,,,,[2-3](Na2SO3)SO2,;,SO2-,,;SO2,[4],,SO2GB2760-1996(500mgkg-1)SO2,,,,,,,,,;,pH,pH4.0-4.5,[5],,VC(),,-SHSO2,-SH,,,,,,(Na2S2O5),,,,1.27000,,60%-70%,,,70%,12;50%,2,1984,,(O3),O3,;DNARNA,,;,,[6]O2O,,,O2,,,,,1.3,,1,,,,2,-,,6511Fig.1Flowchartfordriedsweetpotatoprocessing2.1,,,,,SO21310mgkg-1(,2004127);,SO210mgkg-1,1/100,(30mgkg-1),,()2.22.2.1,,(1),91.67%-100.00%,3min,100%1Table1Effectofozone-watertreatmentfordriedsweetpotatosterilization/min/(cfum-2)/(cfum-2)/%184791.6730100.001286299.3030.399.90312000799.942Table2Sterilizationeffectofozone-gastreatmentfordriedsweetpotatomudprocessing/(cfug-1)3363222.2.2,,,,105-106102-103,,,752:2.2.32,,30min,100%;15min,2Fig.2Effectofozone-gastreatmentfordriedsweetpotatosterilization2.2.42,,2cfug-1,1/102.2.5,,,3,,3Table3Effectofozonicultra-cleantechnologyfortheprocessingandpackagingofdriedsweetpotato/(cfug-1)20(CK1)15010(CK2)202.2.6;,,,2.32.3.1,()::30%-40%:pH0.1%-0.5%,0.025%-0.1%,0.005%-0.1%,pH4.0-4.5:0.2%-0.5%,0.05%-0.1%,0.1%-0.2%:(),0.25%-0.5%:(),0.5%-1.5%2.3.2-,;,851,,,-,:,,30min;,,;2.3.3,,2.4-2.4.1,,,,,[8]:[9]2.4.2-,,,,,,,[7],-,,,,,85-95,,,,,,,4,3-7min,10cfug-1,1/11,4-Table4Sterilizingeffectofmicrowave-steamfordriedsweetpotato/min(377d)/(cfug-1)/(cfug-1)210503101041010510106101071010010120,3-,,55Table5TheinspectionresultofthedriedsweetpotatoproductprocessedwiththenewtechniquesSO2mgkg-1/%/%cfug-1cfug-1MPNg-1103620101035,SO210mgkg-1,,(30mgkg-1);36%,30%-40%;20%-25%,;,,,952:2005500,4(1),,,,,,,-,,,,,(2)4,;,;;,SO2,,,SO210mgkg-1(3),,,pH,98%-100%,,,,,(4),-,:[1].[M].:,2002.348-350.[2],.()[M].:,1984.757-758.[3].[M].:,2001.313-316.[4].SO2[J]..2003,(2):11-14.[5],.[J]..2004,(1):177-179.[6].[J]..2002,(2):51.[7],,,.[M].:,2004.154-204,84-85.[8],,,.[J]..2004,25,(1):11-13.[9]..[M]:,2003.90-99.061