Kawarai Taketo, Furukawa Soichi, Ogihara Hirokazu, Yamasaki Makari
Department of Food Science and Technology, College of Bioresource Sciences, Nihon University, 6F, Ichigaya Tokyu Building, 4-2-1 Kudan-kita, Chiyoda-ku, Tokyo 102-0073, Japan.
Appl Environ Microbiol. 2007 Jul;73(14):4673-6. doi: 10.1128/AEM.02891-06. Epub 2007 May 25.
We found that species combinations such as Lactobacillus casei subsp. rhamnosus IFO3831 and Saccharomyces cerevisiae Kyokai-10 can form a mixed-species biofilm in coculture. Moreover, the Kyokai-10 yeast strain can form a biofilm in monoculture in the presence of conditioned medium (CM) from L. casei IFO3831. The active substance(s) in bacterial CM is heat sensitive and has a molecular mass of between 3 and 5 kDa. In biofilms from cocultures or CM monocultures, yeast cells had a distinct morphology, with many hill-like protrusions on the cell surface.
我们发现,诸如干酪乳杆菌鼠李糖亚种IFO3831和酿酒酵母京阪-10等物种组合在共培养时可形成混合物种生物膜。此外,在来自干酪乳杆菌IFO3831的条件培养基(CM)存在的情况下,京阪-10酵母菌株可在单培养中形成生物膜。细菌CM中的活性物质对热敏感,分子量在3至5 kDa之间。在共培养或CM单培养形成的生物膜中,酵母细胞具有独特的形态,细胞表面有许多丘状突起。