A comparative study of adhesion by bacterial isolates of marine origin

作者：Rodriguez Calvo Alfonso; Andrea Silva Castro Gloria; Uad Imane; Robledo Mahon Tatiana; Menendez Mateu; Gonzalez Lopez Jesus; Calvo Concepcion^*

来源：International Biodeterioration & Biodegradation, 2017, 123: 87-95.

DOI：10.1016/j.ibiod.2017.03.031

• Bacterial surface adhesion
• EPS
• Emulsifying activity
• Nutrient conditions
• Scanning electron microscope

Extracellular polymeric substances (EPS) are one of the main components of microbial biofilms, which are markedly influenced by the chemical composition and functional properties of these EPS. This study quantified the adherence capacity of 29 bacterial strains isolated from marine water in Luria-Bertani and Bushnel-Haas culture media. Their capacity to produce EPS and the influence of the culture conditions on the chemical composition and emulsifying activity of their synthesised exopolymers was determined. Eighteen of the bacterial strains in this study produced EPS while eleven were unable to do so. Surface adherence was associated with bacterial growth and with the capacity of the isolates to synthesise EPS. Pseudoalteromonas elyakovii W18 showed the highest values for surface adherence and synthesised a non-bioemulsifier EPS. Principal component analysis (PCA) was used to establish the relationships between the biopolymer characteristics and surface adherence.

• 出版日期2017-9