不同清洗液对草莓中微生物杀灭效果的研究.doc

—————————————————————————————————————————————————————不同清洗液对草莓中微生物杀灭效果的研究 58 2013,, 食品科学※基础研究徐学玲,赵晓燕,张超,王丹,马越木(北京市农林科学院蔬菜研究中心, 农业部华北地区园艺作物生物学与种质创制重点实验室, 农业部都市农业(北方)重点实验室,北京 100097) 摘要: 研究强酸电解水、弱酸电解水、臭氧水、次氯酸钠溶液和去离子水对新鲜草莓中微生物的杀灭效果, 检测草莓清洗液中菌落总数等变化。结果表明: 强酸电解水、弱酸电解水、臭氧水和次氯酸钠溶液清洗lOmin , 草莓菌落杀菌率均达90%以上, 清洗15m in后杀菌率最高达到94 . 8% 。其中, 强酸电解水、弱酸电解水的微生物清除效果与次氯酸钠溶液相当, 而其初始有效氯质量浓度仅为次氯酸钠溶液的一半。清洗草莓后的强酸电解水、弱酸电解水、次氯酸钠溶液中无存活菌落, 臭氧水与去离子水中仍有菌落存在, 且随清洗时间延长水中菌落数有所增加。关键词: 强酸电解水; 弱酸电解水;臭氧水;次氯酸钠;草莓;杀菌 BactericidalEffectofDiffere ————————————————————————————————————————————————————— ntRinsingSolutions inStrawberries on anisms XUXue-ling , ZHAOXiao . yan , ZHAN G Chao,WANGDan,MAYue木 Center,Beijing AcademyofAgricultureandFore stry (KeyLaboratoryofBiologyandG eneticImprovementofHorticultu ralCrops(NorthChina ) ,Ministryo fAgriculture,KeyLaboratoryof UrbanAgriculture(North ) ,Mini stryof Agriculture , BeijingVegetable Research Sciences,Beijing 100097,China) Abstract : Thebactericidalacti vityofstronglyacidicelectroly ————————————————————————————————————————————————————— zedwater , slightlyacidicelectro lyzedwater , ozonatedwater , sodiu mhypochloriteanddeionizedwate ragainst counts anisms over instrawberrieswasevaluatedb ymeasuringtotalbacterial intherinsingsolutions . Abacte ricidalefficiency90%wasachiev edbyrinsingineachsamplefor10m in, reachingthe maximumof94 . 8%whentherinsing time similarbactericidal activity to was15min . Stronglyacidicelect rolyzedwater and ————————————————————————————————————————————————————— slightlyacidic electrolyzedwaterhadwereonl yhalfthatof sodiumhypochlorite , thoughthe ftinitialactivechlorineconcen trations sodium hypochlorite . Noviablecolonie sweredetectedafterstrawberrie swererinsedinstrongly or acidicelectrolyzedwater , slig htlyacidicelectrolyzedwater or sodiumhypochlorite , whilemore coloniesinozonatedwater deionizedwaterweredetectedw imincreasedrinsingtime. Keywords : stronglyacidicelect rolyzedwater ; slightlyacidicele ctrolyzedwater;ozonatedwat