| 高压脉冲电场对南瓜浆的杀菌效果 |
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| 引用本文： | 张晓辉,李照禄,方婷,陈锦权.高压脉冲电场对南瓜浆的杀菌效果[J].福建农业大学学报,2014(2):191-198. |
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| 作者姓名： | 张晓辉 李照禄 方婷 陈锦权 |
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| 作者单位： | 福建农林大学食品科学学院,福建福州350002 |
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| 基金项目： | 福建省科技重大项目（2011N5004）. |
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| 摘 要： | 研究了高压脉冲电场（PEF）对接种于南瓜浆中不同微生物的杀灭效果及其对南瓜浆中菌落总数的影响．结果表明：随着电场强度、脉冲处理时间和协同温度在试验参数范围内的增加，PEF对微生物的杀灭效果显著提高；不同微生物在南瓜浆中对PEF耐受力的大小为：青霉菌〉金黄色葡萄球菌〉沙门氏菌〉大肠杆菌〉酵母菌，嗜热脂肪芽孢杆菌的耐受力强于枯草芽孢杆菌；60℃的温和热与20．14kV·cm^-1、109．25μs PEF的协同处理使南瓜浆中的菌落总数显著下降，显示出很好的协同作用．
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| 关 键 词： | 高压脉冲电场 南瓜浆 杀菌 菌落总数 |
Effect of pulsed electric fields on the pasteurization of pumpkin pulp |
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| ZHANG Xiao-hui,LI Zhao-lu,FANG Ting,CHEN Jin-quan.Effect of pulsed electric fields on the pasteurization of pumpkin pulp[J].Journal of Fujian Agricultural University,2014(2):191-198. |
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| Authors: | ZHANG Xiao-hui LI Zhao-lu FANG Ting CHEN Jin-quan |
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| Institution: | (College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China) |
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| Abstract: | The lethal effects of pulsed electric fields （PEF） on different microorganisms inoculated in pumpkin pulp and the effects of PEF on total bacterial count of pumpkin pulp were studied. The results showed that with the increasing of electric field strength, treatment time and synergism temperature, the killing effects of PEF were increased remarkably. The tolerance order of different mi- croorganisms in pumpkin pulp to PEF was Penicillium 〉 Staphylococcus aureas 〉 Salmonella 〉 Escherichia coli〉 Yeast, the tolerance of Bacillus stearotlwnnophilus was stronger than Bacillus subtilis. It had showed good synergistic effect that total bacterial count of pumpkin pulp decreased remarkably at the treatment of 60 ℃ mild heat combined with 20.14kV·cm^-1、109.25μs PEF. |
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| Keywords: | pulsed electric fields pumpkin pulp pasteurization total bacterial count |
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