The effect of divalent and trivalent cations on aggregation and surface hydrophobicity of selected microorganism
作者： M. Anwar Alias , Khalida Muda , Augustine Chioma Affam , Azmi Aris , Normala Hashim
DOI: 10.4491/EER.2016.074
关键词: Ionic strength 、 Strain (chemistry) 、 Nuclear chemistry 、 Enterococcus faecalis 、 Absorbance 、 Divalent 、 Hydrophobicity scales 、 Steric effects 、 Bacteria 、 Chemistry
摘要: This study investigated the effect of various cations (Ca2+, Mg2+, Al3+, Mn2+, Zn2+) on autoaggregation (AAg) and surface hydrophobicity (SHb) three different bacteria (Brevibacillus panacihumi strain (ZB1), Lysinibacillus fusiformis (ZB2) Enterococcus faecalis (ZL)) using a 2-level factorial design. The AAg ratio was measured from changes in absorbance media. Results show that ZB2 had maximum for investigated. A microscopic clustering cells observed when Ca2+ added to ZB2. range 62%, 58% 34% ZB2, ZB1 ZL, respectively correlated SHb. aggregation SHb microbial increased with increasing ionic strength due repulsive steric or overlap forces between polymer covered surfaces. demonstrated more significant an attractive binding force.
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