In Vitro Laser Ablation of Natural Marine Biofilms

Author:

Nandakumar Kanavillil1,Obika Hideki2,Utsumi Akihiro2,Ooie Toshihiko2,Yano Tetsuo2

Affiliation:

1. Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada

2. Marine Eco-materials Research Group, Marine Resources and Environment Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Hayashi-cho, Takamatsu, Kagawa, Japan

Abstract

ABSTRACT We studied the efficiency of pulsed low-power laser irradiation of 532 nm from an Nd:YAG (neodymium-doped yttrium-aluminum-garnet) laser to remove marine biofilm developed on titanium and glass coupons. Natural biofilms with thicknesses of 79.4 ± 27.8 μm (titanium) and 107.4 ± 28.5 μm (glass) were completely disrupted by 30 s of laser irradiation (fluence, 0.1 J/cm 2 ). Laser irradiation significantly reduced the number of diatoms and bacteria in the biofilm (paired t test; P < 0.05). The removal was better on titanium than on glass coupons.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Reference21 articles.

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3. Chihara M. and M. Murano. 1997. An illustrated guide to marine phytoplankton in Japan. Tokai daigaku syuppankai (Tokai University Press) Tokai Japan.

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5. Biofilms, the customized microniche

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