Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis

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date 2019-03-25 17:22:54
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id 12060
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originalfilename 6363-01-FH02-FSK-19-28688.pdf
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spelling 12060 https://intelek.unisza.edu.my/intelek/pages/view.php?ref=12060 https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection407072 Restricted Document Article Journal application/pdf 6 Adobe Acrobat Pro DC 20 Paper Capture Plug-in 1.7 Adobe InDesign CC 14.0 (Windows) 2019-03-25 17:22:54 xmp.id:891d5dbf-d902-bc40-896a-7b761c9f20f5 6363-01-FH02-FSK-19-28688.pdf UniSZA Private Access Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis EC Microbiology Objective: The purpose of the present study was to assess the effects of media, optical density, and incubation time on biofilm formation by Staphylococcus epidermidis. Methods: The main procedure involved was fixing the bacterial film with 95% ethanol, staining with 0.1% crystal violet, releasing the bound dye with 33% glacial acetic acid, and measuring the optical density (OD) of the solution at 590 nm by using a microplate reader. Results: It was found that 3 and 5 days of incubation are critical for biofilm formation as indicated by the OD values of 0.55 - 0.06 and 0.70 - 0.39 in MHB and TSB respectively at OD 0.05. Similar results were noted for OD 0.1 in both media MHB and TSB while TSB showing slightly better results for biofilm formation. Conclusion: It is concluded that three days (72 hours) are required for obtaining effective biofilm formation in both MHB and TSB at 370C at OD 0.05 and OD 0.1. 15 4 277-282
spellingShingle Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis
summary Objective: The purpose of the present study was to assess the effects of media, optical density, and incubation time on biofilm formation by Staphylococcus epidermidis. Methods: The main procedure involved was fixing the bacterial film with 95% ethanol, staining with 0.1% crystal violet, releasing the bound dye with 33% glacial acetic acid, and measuring the optical density (OD) of the solution at 590 nm by using a microplate reader. Results: It was found that 3 and 5 days of incubation are critical for biofilm formation as indicated by the OD values of 0.55 - 0.06 and 0.70 - 0.39 in MHB and TSB respectively at OD 0.05. Similar results were noted for OD 0.1 in both media MHB and TSB while TSB showing slightly better results for biofilm formation. Conclusion: It is concluded that three days (72 hours) are required for obtaining effective biofilm formation in both MHB and TSB at 370C at OD 0.05 and OD 0.1.
title Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis
title_full Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis
title_fullStr Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis
title_full_unstemmed Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis
title_short Effect of growth media and optical density on biofilm formation by Staphylococcus epidermidis
title_sort effect of growth media and optical density on biofilm formation by staphylococcus epidermidis