出典:Wiktionary
出典:『Wiktionary』 (2025/07/09 22:36 UTC 版)
From bio- + film. First used in the early 1970s in the context of wastewater treatment.
biofilm (countable and uncountable, plural biofilms)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/28 15:10 UTC 版)
A biofilm is an aggregate of microorganisms in which cells adhere to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm EPS, which is also referred to as slime (although not everything described as slime is a biofilm), is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial and hospital settings. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single-cells that may float or swim in a liquid medium.