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http://dx.doi.org/10.48022/mbl.2208.08015

Effects of Acylase Treatment Episodes on Multispecies Biofilm Development  

Ji Won, Lee (Department of Microbiology, Pusan National University)
So-Yeon, Jeong (Department of Microbiology, Pusan National University)
Tae Gwan, Kim (Department of Microbiology, Pusan National University)
Publication Information
Microbiology and Biotechnology Letters / v.50, no.4, 2022 , pp. 548-556 More about this Journal
Abstract
Acylases can have a significant effect on biofilm formation owing to their quorum quenching activity. In this study, we investigated the effects of acylase treatment episodes on multispecies biofilm development. A consortium composed of 9 species belonging to different genera was allowed to form biofilms for 5 days under various treatment episodes (different treatment periods, 1, 2, 3, or 4 days; and two application timings, beginning or later) at 1, 5, 10, 20 and 50 mg·l-1 acylase concentrations. The acylase treatment for 5 days showed that acylase concentration was negative with biofilm development (linear regression, Y = -0.05·x + 2.37, p < 0.05, R2 = 0.88). Acylase was more effective in reducing biofilm formation when it was applied in the beginning (vs. in later development stage) at all acylase concentrations (p < 0.05). ANOVA indicated that treatment period was significant on biofilm formation in both application timings at ≥ 10 mg·l-1 (p < 0.05). Linearity test results showed that all slope values between period and biofilm were negative in both timings at ≥ 10 mg·l-1 (p < 0.05, except for the later application at 20 mg·l-1). When temporal biofilm dynamics were monitored at 20 mg·l-1, biofilms gradually increased with time at all treatment episodes (p < 0.05), and slope values in linear regression between biofilm and time were lower when acylase was applied in the beginning (p < 0.05). Our findings suggest the importance of the acylase treatment period and application timing on biofilm control.
Keywords
Acylase; multispecies biofilm; quorum quenching activity;
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