E-coli adhesion to silica in the presence of humic acid

被引：43

作者：

Parent, ME ^{[1
]}

Velegol, D ^{[1
]}

机构：

[1] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2004年 / 39卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

bacterial adhesion; humic acid; Escherichia coli; silica particles; bioremediation;

D O I：

10.1016/j.colsurfb.2004.08.020

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

The influence of humic acid on the adhesion of Escherichia coli to silica particles or glass surfaces was investigated. After adsorbing various amounts of humic acid to the particles or surfaces, bacteria were added to the sample and allowed to adhere. For the silica particles the number of bacteria-particle couplets formed were counted from video microscopy images. For the glass surfaces, a differential electrophoresis force was applied, and the force required to detach the bacteria was quantified. These experiments showed a slight increase in the number of couplets formed in the presence of humic acid, and also showed a slight increase in the force required for detachment of the bacteria. Although ail increase in adhesion number and strength was measured, the magnitude of the increase was small, indicating that humic acid plays a small role in bacterial adhesion to silica or glass surfaces. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：45 / 51

页数：7

共 53 条

[1]

An YH, 1998, J BIOMED MATER RES, V43, P338, DOI 10.1002/(SICI)1097-4636(199823)43:3<338::AID-JBM16>3.0.CO

[2]

2-B

[3] Kinetics of humic acid adsorption at solid-water interfaces [J].

Avena, MJ ;

Koopal, LK .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1999, 33 (16) :2739-2744

[4] Atomic force microscopy of humic substances: Effects of pH and ionic strength [J].

Balnois, E ;

Wilkinson, KJ ;

Lead, JR ;

Buffle, J .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1999, 33 (21) :3911-3917

[5]

BECKETT R, 1990, SURFACE COLLOID CHEM, pCH1

[6] The complete genome sequence of Escherichia coli K-12 [J].

Blattner, FR ;

Plunkett, G ;

Bloch, CA ;

Perna, NT ;

Burland, V ;

Riley, M ;

ColladoVides, J ;

Glasner, JD ;

Rode, CK ;

Mayhew, GF ;

Gregor, J ;

Davis, NW ;

Kirkpatrick, HA ;

Goeden, MA ;

Rose, DJ ;

Mau, B ;

Shao, Y .

SCIENCE, 1997, 277 (5331) :1453-+

[7] Effect of natural organic coatings on the polymer-induced coagulation of colloidal particles [J].

Bob, MM ;

Walker, HW .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2001, 177 (2-3) :215-222

[8]

BRYERS JD, 1994, COLLOID SURFACE B, V2, P9, DOI 10.1016/0927-7765(94)80013-8

[9] Minimizing biofilm in the presence of iron oxides and humic substances [J].

Butterfield, PW ;

Camper, AK ;

Biederman, JA ;

Bargmeyer, AM .

WATER RESEARCH, 2002, 36 (15) :3898-3910

[10] Probing bacterial electrosteric interactions using atomic force microscopy [J].

Camesano, TA ;

Logan, BE .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2000, 34 (16) :3354-3362

← 1 2 3 4 5 6 →