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Antibacterial Characteristics of Heated Scallop-Shell Nano-Particles

机译：扇贝壳纳米颗粒的抗菌特性

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摘要

Heated scallop-shell (HSS) nano-particles, prepared using a wet grinding mill, and micro-particles were examined for their antibacterial activity against vegetative bacterial cells and spores. The median diameters of the nano-particles and micro-particles were approximately 20 nm and 30 mu m, respectively. The antibacterial activity of HSS against Escherichia coli increased with an increase in concentration, regardless of particle size; however, the antibacterial activity of the nano-particles was much higher than that of micro-particles. The sporicidal activity of the nano-particles was also much higher than that of micro-particles, with HSS nano-particles able to kill Bacillus subtilis spores. A reduction of more than three orders of magnitude for B. subtilis spores was confirmed following a 30 min treatment at 5 mg/ml and 60 degrees C, showing that the combination of HSS nano-particle treatment with mild heating was particularly effective for controlling bacterial spores
机译：使用湿磨机制备的加热的扇贝壳（HSS）纳米颗粒和微粒对植物营养细菌细胞和孢子的抗菌活性进行了研究。纳米颗粒和微粒的中值直径分别为约20nm和30μm。 HSS对大肠杆菌的抗菌活性随浓度的增加而增加，而与粒径无关。然而，纳米颗粒的抗菌活性远高于微米颗粒。纳米颗粒的杀孢子活性也远高于微米颗粒，其中HSS纳米颗粒能够杀死枯草芽孢杆菌的孢子。在5 mg / ml和60摄氏度的温度下处理30分钟后，确认枯草芽孢杆菌孢子减少了三个数量级以上，这表明HSS纳米粒子处理与温和加热的结合对于控制细菌特别有效孢子

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