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食品研究与开发:2019,40(17):105-109
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高压脉冲电场强化杀菌对哈密瓜汁品质的影响
(1.新产业大健康科技(珠海)有限公司,广东珠海519055;2.江南大学食品学院,江苏无锡214122)
Effects of High Voltage Pulsed Electric Field Enhanced Sterilization Method on the Quality of Hami Melon Juice
(1.New Industry Health Technology(Zhuhai)Co.,Ltd.,Zhuhai 519055,Guangdong,China;2.School of Food Science and Technology,Jiangnan University,Wuxi 214122,Jiangsu,China)
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投稿时间:2018-10-09    
中文摘要: 研究高压脉冲电场(pulsed electric field,PEF)强化杀菌方法对哈密瓜汁微生物指标和理化品质的影响。温和热协同PEF处理(20 kV/cm+55℃)与热处理(90℃)具有一致的杀菌效果,均能使哈密瓜汁在4℃的保藏期达到15 d。热处理(90℃)显著影响哈密瓜汁的电导率、可溶性固形物含量、浊度以及色泽(P<0.05),使VC含量降低34.97%,而温和热协同PEF处理(20 kV/cm+55℃)除显著影响哈密瓜汁的浊度外(P<0.05),对其他理化指标基本无影响,因此PEF强化杀菌方法在哈密瓜汁的生产中具有重要的应用价值。
Abstract:The effects of high voltage pulsed electric field (PEF)on microbiological index and physical and chemicalqualityofHamimelonjuicewerestudied.ThemildthermalsynergisticPEFtreatment(20kV/cm+55℃)and heat treatment(90℃)had the same effect of sterilization.They both could achieve a storage period of 15 d at 4℃.Heat treatment(90℃)significantly affected the conductivity,soluble solids content,turbidity and color of Hami melon juice (P <0.05),reducing the VCcontent by 34.97%.However,the mild thermal synergistic PEF treatment(20 kV/cm+55 ℃)had no effect on other physical and chemical indicators except that it significantly affected the turbidity of the Hami melon juice (P<0.05).Therefore,PEF enhanced sterilization method had an important application value in the production of Hami melon juice.
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