Biosynthesis of gold nanoparticles by Azospirillum brasilense
Plant-associated nitrogen-fixing soil bacteria Azospirillum brasilense were shown to reduce the gold of chloroauric acid to elemental gold, resulting in formation of gold nanoparticles. Extracellular phenoloxidizing enzymes (laccases and Mn peroxidases) were shown to participate in reduction of Au +...
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| Veröffentlicht in: | Microbiology (New York) 2013-11, Vol.82 (6), p.833-840 |
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| creator | Kupryashina, M. A. Vetchinkina, E. P. Burov, A. M. Ponomareva, E. G. Nikitina, V. E. |
| description | Plant-associated nitrogen-fixing soil bacteria
Azospirillum brasilense
were shown to reduce the gold of chloroauric acid to elemental gold, resulting in formation of gold nanoparticles. Extracellular phenoloxidizing enzymes (laccases and Mn peroxidases) were shown to participate in reduction of Au
+3
(HAuCl
4
) to Au
0
. Transmission electron microscopy revealed accumulation of colloidal gold nanoparticles of diverse shape in the culture liquid of
A. brasilense
strains Sp245 and Sp7. The size of the electron-dense nanospheres was 5 to 50 nm, and the size of nanoprisms varied from 5 to 300 nm. The tentative mechanism responsible for formation of gold nanoparticles is discussed. |
| doi_str_mv | 10.1134/S002626171401007X |
| format | Article |
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Azospirillum brasilense
were shown to reduce the gold of chloroauric acid to elemental gold, resulting in formation of gold nanoparticles. Extracellular phenoloxidizing enzymes (laccases and Mn peroxidases) were shown to participate in reduction of Au
+3
(HAuCl
4
) to Au
0
. Transmission electron microscopy revealed accumulation of colloidal gold nanoparticles of diverse shape in the culture liquid of
A. brasilense
strains Sp245 and Sp7. The size of the electron-dense nanospheres was 5 to 50 nm, and the size of nanoprisms varied from 5 to 300 nm. The tentative mechanism responsible for formation of gold nanoparticles is discussed.</description><identifier>ISSN: 0026-2617</identifier><identifier>EISSN: 1608-3237</identifier><identifier>DOI: 10.1134/S002626171401007X</identifier><language>eng</language><publisher>Boston: Springer US</publisher><subject>Azospirillum brasilense ; Biomedical and Life Sciences ; Experimental Articles ; Life Sciences ; Medical Microbiology ; Microbiology</subject><ispartof>Microbiology (New York), 2013-11, Vol.82 (6), p.833-840</ispartof><rights>Pleiades Publishing, Ltd. 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c387t-705d6e3d16266e00eb9f68e72301c8dff18448d8385967c42d5d6024830d7a8b3</citedby><cites>FETCH-LOGICAL-c387t-705d6e3d16266e00eb9f68e72301c8dff18448d8385967c42d5d6024830d7a8b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S002626171401007X$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S002626171401007X$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Kupryashina, M. A.</creatorcontrib><creatorcontrib>Vetchinkina, E. P.</creatorcontrib><creatorcontrib>Burov, A. M.</creatorcontrib><creatorcontrib>Ponomareva, E. G.</creatorcontrib><creatorcontrib>Nikitina, V. E.</creatorcontrib><title>Biosynthesis of gold nanoparticles by Azospirillum brasilense</title><title>Microbiology (New York)</title><addtitle>Microbiology</addtitle><description>Plant-associated nitrogen-fixing soil bacteria
Azospirillum brasilense
were shown to reduce the gold of chloroauric acid to elemental gold, resulting in formation of gold nanoparticles. Extracellular phenoloxidizing enzymes (laccases and Mn peroxidases) were shown to participate in reduction of Au
+3
(HAuCl
4
) to Au
0
. Transmission electron microscopy revealed accumulation of colloidal gold nanoparticles of diverse shape in the culture liquid of
A. brasilense
strains Sp245 and Sp7. The size of the electron-dense nanospheres was 5 to 50 nm, and the size of nanoprisms varied from 5 to 300 nm. The tentative mechanism responsible for formation of gold nanoparticles is discussed.</description><subject>Azospirillum brasilense</subject><subject>Biomedical and Life Sciences</subject><subject>Experimental Articles</subject><subject>Life Sciences</subject><subject>Medical Microbiology</subject><subject>Microbiology</subject><issn>0026-2617</issn><issn>1608-3237</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEqXwA9gysgTOH7HdgaFUfEmVGACJzUpip7hy4uBLhvLrSVU2JKYb3uc53b2EXFK4ppSLm1cAJpmkigqgAOrjiMyoBJ1zxtUxme3jfJ-fkjPELQAUrChm5PbOR9x1w6dDj1lssk0MNuvKLvZlGnwdHGbVLlt-R-x98iGMbValEn1wHbpzctKUAd3F75yT94f7t9VTvn55fF4t13nNtRpyBYWVjls6XSgdgKsWjdROMQ601rZpqBZCW811sZCqFsxOPDChOVhV6orPydVhb5_i1-hwMK3H2oVQdi6OaGghgbJC6MWE0gNap4iYXGP65Nsy7QwFs6_K_KlqctjBwYntNi6ZbRxTN330j_QDo5RqJQ</recordid><startdate>20131101</startdate><enddate>20131101</enddate><creator>Kupryashina, M. A.</creator><creator>Vetchinkina, E. P.</creator><creator>Burov, A. M.</creator><creator>Ponomareva, E. G.</creator><creator>Nikitina, V. E.</creator><general>Springer US</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>C1K</scope></search><sort><creationdate>20131101</creationdate><title>Biosynthesis of gold nanoparticles by Azospirillum brasilense</title><author>Kupryashina, M. A. ; Vetchinkina, E. P. ; Burov, A. M. ; Ponomareva, E. G. ; Nikitina, V. E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c387t-705d6e3d16266e00eb9f68e72301c8dff18448d8385967c42d5d6024830d7a8b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Azospirillum brasilense</topic><topic>Biomedical and Life Sciences</topic><topic>Experimental Articles</topic><topic>Life Sciences</topic><topic>Medical Microbiology</topic><topic>Microbiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kupryashina, M. A.</creatorcontrib><creatorcontrib>Vetchinkina, E. P.</creatorcontrib><creatorcontrib>Burov, A. M.</creatorcontrib><creatorcontrib>Ponomareva, E. G.</creatorcontrib><creatorcontrib>Nikitina, V. E.</creatorcontrib><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Microbiology (New York)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kupryashina, M. A.</au><au>Vetchinkina, E. P.</au><au>Burov, A. M.</au><au>Ponomareva, E. G.</au><au>Nikitina, V. E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biosynthesis of gold nanoparticles by Azospirillum brasilense</atitle><jtitle>Microbiology (New York)</jtitle><stitle>Microbiology</stitle><date>2013-11-01</date><risdate>2013</risdate><volume>82</volume><issue>6</issue><spage>833</spage><epage>840</epage><pages>833-840</pages><issn>0026-2617</issn><eissn>1608-3237</eissn><abstract>Plant-associated nitrogen-fixing soil bacteria
Azospirillum brasilense
were shown to reduce the gold of chloroauric acid to elemental gold, resulting in formation of gold nanoparticles. Extracellular phenoloxidizing enzymes (laccases and Mn peroxidases) were shown to participate in reduction of Au
+3
(HAuCl
4
) to Au
0
. Transmission electron microscopy revealed accumulation of colloidal gold nanoparticles of diverse shape in the culture liquid of
A. brasilense
strains Sp245 and Sp7. The size of the electron-dense nanospheres was 5 to 50 nm, and the size of nanoprisms varied from 5 to 300 nm. The tentative mechanism responsible for formation of gold nanoparticles is discussed.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1134/S002626171401007X</doi><tpages>8</tpages></addata></record> |
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| language | eng |
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| subjects | Azospirillum brasilense Biomedical and Life Sciences Experimental Articles Life Sciences Medical Microbiology Microbiology |
| title | Biosynthesis of gold nanoparticles by Azospirillum brasilense |
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