Characterization and bacterial toxicity of lanthanum oxide bulk and nanoparticles

This study evaluated the bacterial toxicity of lanthanum oxide micron and nano sized particles using shake flask method against gram-positive （Staphylococcus aureus） and gram-negative （Escherichia coli, Pseudomonas aeruginosa） bacteria. Particle size, morphology and chemical composition were determi...

Full description

Saved in:
Bibliographic Details
Published inJournal of rare earths Vol. 30; no. 12; pp. 1298 - 1302
Main Authors Balusamy, Brabu, Kandhasamy, Yamuna Gowri, Senthamizhan, Anitha, Chandrasekaran, Gopalakrishnan, Subramanian, Murugan Siva, Kumaravel, Tirukalikundram S
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2012
Subjects
bacterial toxicity
Escherichia coli
lanthanum oxide
nanoparticles
Pseudomonas aeruginosa
pyocyanin
rare earths
Staphylococcus aureus
扫描电子显微镜
散装
毒性
氧化镧
纳米颗粒
细菌
金黄色葡萄球菌
铜绿假单胞菌
lanthanum oxide
bacterial toxicity
nanoparticles
pyocyanin
rare earths
Online AccessGet full text

Cover

More Information
Summary:This study evaluated the bacterial toxicity of lanthanum oxide micron and nano sized particles using shake flask method against gram-positive （Staphylococcus aureus） and gram-negative （Escherichia coli, Pseudomonas aeruginosa） bacteria. Particle size, morphology and chemical composition were determined using scanning electron microscopy （SEM） and energy dispersive X-ray spectroscopy （EDS）. Results indicated that lanthanum oxide nanoparticles showed antimicrobial activity against Staphylococcus aureus, but not against Escherichia coli and Pseudomonas aeruginosa. It was speculated that lanthanum oxide produced this effect by interacting with the gram-positive bacterial cell wall. Furthermore, lanthanum oxide bulk particles were fotmd to enhance the pyocyanin pigment production in Pseudomonas aeruginosa.
Bibliography:lanthanum oxide： nanoparticles： bacterial toxicity： pyocyanin; rare earths
11-2788/TF
This study evaluated the bacterial toxicity of lanthanum oxide micron and nano sized particles using shake flask method against gram-positive （Staphylococcus aureus） and gram-negative （Escherichia coli, Pseudomonas aeruginosa） bacteria. Particle size, morphology and chemical composition were determined using scanning electron microscopy （SEM） and energy dispersive X-ray spectroscopy （EDS）. Results indicated that lanthanum oxide nanoparticles showed antimicrobial activity against Staphylococcus aureus, but not against Escherichia coli and Pseudomonas aeruginosa. It was speculated that lanthanum oxide produced this effect by interacting with the gram-positive bacterial cell wall. Furthermore, lanthanum oxide bulk particles were fotmd to enhance the pyocyanin pigment production in Pseudomonas aeruginosa.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(12)60224-5