Sorption of humic acids by bacteria

被引：17

作者：

Tikhonov, V. V. ^{[1
]}

Orlov, D. S. ^{[1
]}

Lisovitskaya, O. V. ^{[3
]}

Zavgorodnyaya, Yu A. ^{[1
]}

Byzov, B. A. ^{[1
]}

Demin, V. V. ^{[2
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Soil Sci, Solnechnogorsk Raion, Moscow Oblast, Russia

[2] Moscow MV Lomonosov State Univ, Inst Ecol Soil Sci, Solnechnogorsk Raion, Moscow Oblast, Russia

[3] Moscow MV Lomonosov State Univ, Expt & Educ Soil Ecol Ctr, Solnechnogorsk Raion, Moscow Oblast, Russia

来源：

MICROBIOLOGY | 2013年 / 82卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

gram-positive and gram-negative bacteria; cell wall; humic acids; sorption; BACILLUS-SUBTILIS; ORGANIC PESTICIDES; ESCHERICHIA-COLI; FULVIC-ACID; ADSORPTION; PERMEABILITY; MEMBRANE;

D O I：

10.1134/S0026261713060106

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Capacity for sorption of humic acid (HA) from water solutions was shown for 38 bacterial strains. Isotherms of HA sorption were determined for the cells of 10 strains. The bonding strength between the cells and HA (k) and the terminal adsorption (Q (max)) determined from the Langmuir equation for gram-positive and gram-negative bacteria were reliably different. Gram-positive bacteria sorbed greater amounts of HA than gram-negative ones (Q (max) = 23 +/- 10 and 5.6 +/- 1.2 mg/m(2), respectively). The bonding strength between HA and the cells was higher in gram-negative bacteria than in gram-positive: k = 9 +/- 5 and 3.3 +/- 1.1 mL/mg, respectively.

引用

页码：707 / 712

页数：6

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