An investigation of inactivation mechanisms of Bacillus amyloliquefaciens spores in non-thermal plasma of ambient air.
作者： Yaohua Huang , Xiaofei P Ye , Christopher J Doona , Florence E Feeherry , Mark Radosevich
DOI: 10.1002/JSFA.9198
关键词:
摘要: To utilize the potential of non-thermal plasma technologies for food safety control and sanitation, inactivation mechanisms Bacillus amyloliquefaciens spores by ambient air (NTP-AA) were investigated using scanning electron microscopy, atomic force attenuated total reflectance Fourier transform infrared spectroscopy with chemometric analysis proton nuclear magnetic resonance spectroscopy, aiming to probe both morphological biochemical changes occurring in during kinetic process. RESULTS Kinetic indicates that there is no intrinsic D-value (i.e. time required inactivate 90% spores) spore NTP-AA because we observed non-linear (biphasic) kinetics and, addition, rate depended on initial concentration how exposed reactive species NTP-AA. The presence suitable amount water field accelerates inactivation. CONCLUSION Progressive erosion surface ensuing or concomitant damage, which includes alteration structural proteins, internal lipids loss dipicolinic acid content from core, represent main inactivation, evidence could penetrate cortex reach core cause damage. ? 2018 Society Chemical Industry
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