Ascorbic acid potentiates photodynamic inactivation mediated by octyl gallate and blue light for rapid eradication of planktonic bacteria and biofilms

Zheng, Mei-zhi; Chen, Wen-xuan; Zhao, Yue-xin; Fang, Qiang; Wang, Ling-gang; Tian, Shi-yi; Shi, Yu-gang; Chen, Jian-she

doi:10.1016/j.foodchem.2024.139073

Cited by 7 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A slight inhibitory effect was observed on the growth of PAO1 at pH 7.0–8.0 (Figure S11). Hydroxyl radicals and hydrogen bubbles have both been confirmed to influence bacteria activity. , Although the agar diffusion assay experiment confirmed that the effect of the pH (7.0–8.0) on bacterial growth activity is minimal, the influence of OH – on its motility cannot be ruled out. We failed to observe any microbubbles larger than 200 nm formed on the surfaces throughout the entire experiment under all the EP conditions because DHM has a resolution of 200 nm for 40× objective (NA = 0.6) .…”

Section: Results and Discussionmentioning

confidence: 99%

Adaptive Escape of Pseudomonas aeruginosa by Application of Low-Amplitude Electric Pulses

Feng,

Liu,

Bao

et al. 2024

Langmuir

View full text Add to dashboard Cite

Marine antibiofouling using low-amplitude electric pulses (EP) is an energy-efficient and eco-friendly approach, but potential mechanisms for preventing biofouling remain unclear. In the present study, the 3D adhesion dynamics of a model microorganism�Pseudomonas aeruginosa (PAO1)�under lowamplitude cathodic EP were examined as a function of applying voltage and its duration (t d ). The results demonstrated that adhered bacteria escaped from the electrode surface even when EP was removed. The escaped bacteria ratio, induction period of escape, and duration of the detachment were influenced profoundly by EP amplitude but slightly by t d when t d ≥ 5 min. The acceleration of escaped PAO1 from the surface indicated that their flagellar motor was powered by EP. Particularly, EP enabled swimming bacteria to have adaptive motions that were sustainable and regulated by the gene rsmA. As a result, they had less accumulation near the surface. The propulsion of adhered bacteria and adaptive escape of swimming bacteria were enhanced in response to low-amplitude EP. Hence, low-amplitude and short-duration EP is promising for sustainable antibiofouling applications.

show abstract

Section: Results and Discussionmentioning

confidence: 99%