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西安交通大学能源与动力工程学院环境科学与工程系,陕西省西安市710049
Received:09 May 2025,
Revised:2025-07-21,
Accepted:29 July 2025,
移动端阅览
HAO Xin, LIU Hongxia, CHAI Shouning. The application of plasma-activated water for inactivating
针对现有灭活糠秕马拉色菌方法普适性较差,通常存在依从性低、不良反应及容易产生耐药性等问题,探索了等离子体活化水在糠秕马拉色菌灭活中的应用。通过低温等离子体技术制取不同类型的等离子体活化水,探讨物化性质的变化规律;根据菌落计数法分析糠秕马拉色菌菌体活性在灭活前后的变化规律;利用检测DNA及蛋白质泄漏量、胞外碱性磷酸酶(AKP)浓度以及紫外吸收物质含量等来分析灭活的作用机制。结果表明:在等离子体活化水中存在大量的活性物种,包括H
+
、H
2
O
2
、NO
2
-
、NO
3
-
等活性物种;当气体流量为5 L‧min
-1
和活化时间为25 min时,能够对糠秕马拉色菌造成明显的灭活效果,菌落数可降至0.98 lg(CFU‧mL
-1
);导致菌体DNA和蛋白质泄漏、胞外AKP以及紫外吸收物质含量增加。研究可为等离子体活化水在防治糠秕马拉色菌中的应用提供理论支撑,有望成为微生物污染防治领域中绿色高效的应用方法。
The investigation was motivated by the recognition of the limited applicability of existing methods for inactivating
Malassezia furfur
which often suffer from low compliance
adverse reactions
and the potential for drug resistance. The application of plasma-activated water in the inactivation of
Malassezia furfur
is explored. Different types of plasma-activated water are produced by low-temperature plasma technology to explore the change rule of physical and chemical properties
and the change rule of bacterial activity before and after inactivation is analyzed according to the colony counting method
DNA and protein leakage
extracellular alkaline phosphatase (AKP) concentration
and ultraviolet absorbing substance content are measured to analyze the mechanism of inactivation. The results indicate that there are a large number of active species present in plasma-activated water
including H
+
H
2
O
2
NO
2
⁻
NO
3
⁻
and other active species; When the gas flow rate is 5 L‧min
-1
and the activation time is 25 min
it can achieve a signi
ficant inactivation effect on
Malassezia furfur
reducing the colony count to 0.98 lg (CFU‧mL
-1
); This leads to increased leakage of bacterial DNA and proteins
extracellular AKP
and UV-absorbing substances. The study provides theoretical support for the application of plasma-activated water in the prevention and control of
Malassezia furfur
which is expected to become a green and efficient application method in the field of microbial pollution prevention and control.
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