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首页> 外文期刊>International Journal of Electrochemical Science >The Effect of Various Potentials on the Attachment of Saccharomyces Cerevisiae and Staphylococcus Epidermidis to Carbon Paste Electrodes.
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The Effect of Various Potentials on the Attachment of Saccharomyces Cerevisiae and Staphylococcus Epidermidis to Carbon Paste Electrodes.

机译：各种电位对酿酒酵母和表皮葡萄球菌附着在碳糊电极上的影响。

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摘要

The attachment process of microbial cells to the carbon paste electrodes with applying variouspotentials was observed. An electrochemical method was used for the study of the effect of variouspotentials on the attachment of Saccharomyces cerevisiae and Staphylococcus epidermidis cells at pH7.2. The attachment process was analyzed by measuring the electric current derived from the dye(amido black) adsorbed on the vacant areas of carbon paste electrodes (CPE) after attachment ofmicrobial cells. A free attachment (not enhanced by potentials) to the surface of CPE occurred for bothspecies with significantly higher extent for S. epidermidis. It was found that the attachment of bothmicroorganisms was significantly enhanced by applying the positive potentials. Particular potentialsresulted in higher extent for the adhesion of both S. cerevisiae and S. epidermidis to the surface of CPEwere determined. A probable deliberation of the cells from the surface of CPE occurred when applied - 300 mV during attachment of S. cerevisiae, and -500 and -600 mV for S. epidermidis. Additionally, thetime of incubation and viability of the yeast cells influenced their attachment to the surface of carbonpaste electrodes.
机译：观察到微生物细胞通过施加各种电位而附着到碳糊电极上的过程。用电化学方法研究各种电位对pH7.2下酿酒酵母和表皮葡萄球菌细胞附着的影响。通过测量微生物细胞附着后吸附在碳糊电极（CPE）的空白区域上的染料（酰胺黑）衍生的电流来分析附着过程。两种物种在表皮葡萄球菌上的游离附着程度都没有增加（没有通过电位增强），这两个物种的表皮葡萄球菌的附着程度明显更高。发现通过施加正电势，两种微生物的附着显着增强。确定了更高程度导致啤酒酵母和表皮葡萄球菌粘附于CP​​E表面的特定电位。当施加啤酒时，细胞可能会从CPE表面脱细胞-在酿酒酵母附着过程中为300 mV，对于表皮葡萄球菌则为-500和-600 mV。另外，酵母细胞的孵育时间和生存能力影响了它们与碳糊电极表面的附着。

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