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文章摘要
LED可见光与有机酸的协同抗菌性能研究
Synergistic Antibacterial Activity of LED Visible Light and organic Acids
投稿时间:2018-04-14  修订日期:2018-05-24
DOI:
中文关键词: LED可见光  有机酸  大肠杆菌  枯草芽孢杆菌  协同作用
英文关键词: LED visible light  organic acid  Escherichia coli  Bacillus subtilis  synergistic effect
基金项目:江苏省食品先进制造装备技术重点实验室自主研究课题资助项目(编号:FMZ201807);2017年江苏省研究生实践创新计划项目(编号:SJCX17_0484);2017年江苏省大学生创新创业训练计划项目(编号:2017126Z)
作者单位E-mail
俞建峰 江苏省食品先进制造装备技术重点实验室 robotmcu@126.com 
夏晓露 江苏省食品先进制造装备技术重点实验室  
陈健 江苏省食品先进制造装备技术重点实验室  
张楚唯 江苏省食品先进制造装备技术重点实验室  
荣家伟 江苏省食品先进制造装备技术重点实验室  
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中文摘要:
      为探索新型食品保鲜技术,研究了LED可见光与有机酸的协同抗菌效果,以期为食品工业提供新的保鲜贮藏方法。本试验研究了LED可见光波长、有机酸种类、温度3个因素对大肠杆菌和枯草芽孢杆菌抗菌效果影响。结果表明:在不同的温度和菌种试验条件下,LED蓝光和乳酸分别有较好的抗菌效果。这两者相结合,可获得更好的抗菌效果。LED蓝光与质量浓度为1 g/kg乳酸相结合,在12 ℃条件下,可使初始浓度为6 lg CFU/mL的大肠杆菌完全灭活,也能使枯草芽孢杆菌的活菌数减小(3.88±0.17)lg CFU/mL;在25 ℃条件下,与对照组相比,能够使大肠杆菌和枯草芽孢杆菌活菌数分别减小(4.99±0.07),(3.12±0.09)lg CFU/mL。
英文摘要:
      In order to explore the new technology of food preservation, the synergistic antibacterial effect of LED visible light and organic acids were studied, and a novel storage method for the food industry was provided. The antibacterial effects of LED visible light wavelength, the type of organic acids, temperature on the Escherichia coli and Bacillus subtilis were investigated. The results showed that LED blue light had better antibacterial effect compared to green light and red light, while lactic acid had better antibacterial effect compared to citric acid and malic acid in different test conditions. The combination of the LED blue light and citric acid could achieve better antibacterial effects. The combination of LED blue light with 1 g / kg lactic acid at 12 ℃, the initial concentration of Escherichia coli (6 lg CFU/mL ) could be completely inactivated, and the number of Bacillus subtilis could be decreased by (3.88±0.17) lg CFU/mL; At 25 ℃, compared with the blank control group, the number of Escherichia coli and Bacillus subtilis could be decreased by (4.99±0.07), (3.12±0.09) lg CFU/mL, respectively.
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