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Effect of pore diffusional resistance on biocatalytic activity of Burkholderia cepacia lipase immobilized on SBA-15 hosts
The present study was focused on elucidating the effects of nanopore diffusional resistance on the activity of Burkholderia cepacia (BC lipase) lipase immobilized in ordered mesoporous silica hosts. BC lipase was immobilized in ordered SBA-15 hosts possessing 55 and 240 A ˚ diameter pores by physica...
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| Published in: | Chemical engineering science 2009-04, Vol.64 (7), p.1474-1479 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c455t-c970a4df4a899c354d8a335940ce35a2335226382d521d34641746faad9654273 |
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| cites | cdi_FETCH-LOGICAL-c455t-c970a4df4a899c354d8a335940ce35a2335226382d521d34641746faad9654273 |
| container_end_page | 1479 |
| container_issue | 7 |
| container_start_page | 1474 |
| container_title | Chemical engineering science |
| container_volume | 64 |
| creator | Jaladi, Hemachand Katiyar, Amit Thiel, Stephen W. Guliants, Vadim V. Pinto, Neville G. |
| description | The present study was focused on elucidating the effects of nanopore diffusional resistance on the activity of
Burkholderia cepacia (BC lipase) lipase immobilized in ordered mesoporous silica hosts. BC lipase was immobilized in ordered SBA-15 hosts possessing 55 and
240
A
˚
diameter pores by physical adsorption. A colorimetric assay of
p-nitrophenyl acetate was employed to determine the lipase catalytic activity. The effect of diffusional resistance on catalytic activity of lipase immobilized in SBA-15 hosts was investigated by determining the effective substrate diffusivity as a function of pore size of the SBA-15 host and enzyme loading. Lipase immobilized in SBA-15-
55
A
˚
exhibited 20–30% of free lipase activity and the activity was further reduced with enzyme loading due to limited accessibility of substrate to the enzyme active sites. Lipase immobilized in SBA-15-
240
A
˚
hosts showed catalytic activity similar to free lipase activity suggesting that diffusional limitations were minimal. Large pore SBA-15 hosts provided an improved environment for BC lipase to retain its catalytic activity. |
| doi_str_mv | 10.1016/j.ces.2008.10.042 |
| format | article |
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Burkholderia cepacia (BC lipase) lipase immobilized in ordered mesoporous silica hosts. BC lipase was immobilized in ordered SBA-15 hosts possessing 55 and
240
A
˚
diameter pores by physical adsorption. A colorimetric assay of
p-nitrophenyl acetate was employed to determine the lipase catalytic activity. The effect of diffusional resistance on catalytic activity of lipase immobilized in SBA-15 hosts was investigated by determining the effective substrate diffusivity as a function of pore size of the SBA-15 host and enzyme loading. Lipase immobilized in SBA-15-
55
A
˚
exhibited 20–30% of free lipase activity and the activity was further reduced with enzyme loading due to limited accessibility of substrate to the enzyme active sites. Lipase immobilized in SBA-15-
240
A
˚
hosts showed catalytic activity similar to free lipase activity suggesting that diffusional limitations were minimal. Large pore SBA-15 hosts provided an improved environment for BC lipase to retain its catalytic activity.</description><identifier>ISSN: 0009-2509</identifier><identifier>EISSN: 1873-4405</identifier><identifier>DOI: 10.1016/j.ces.2008.10.042</identifier><identifier>CODEN: CESCAC</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Adsorption ; Applied sciences ; Biocatalysis ; Burkholderia cepacia ; Catalysis ; Catalytic reactions ; Chemical engineering ; Chemistry ; Diffusion ; Enzyme ; Exact sciences and technology ; General and physical chemistry ; Heat and mass transfer. Packings, plates ; Mass transfer ; Mesoporous ; Reactors ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Chemical engineering science, 2009-04, Vol.64 (7), p.1474-1479</ispartof><rights>2008 Elsevier Ltd</rights><rights>2009 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c455t-c970a4df4a899c354d8a335940ce35a2335226382d521d34641746faad9654273</citedby><cites>FETCH-LOGICAL-c455t-c970a4df4a899c354d8a335940ce35a2335226382d521d34641746faad9654273</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21343136$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Jaladi, Hemachand</creatorcontrib><creatorcontrib>Katiyar, Amit</creatorcontrib><creatorcontrib>Thiel, Stephen W.</creatorcontrib><creatorcontrib>Guliants, Vadim V.</creatorcontrib><creatorcontrib>Pinto, Neville G.</creatorcontrib><title>Effect of pore diffusional resistance on biocatalytic activity of Burkholderia cepacia lipase immobilized on SBA-15 hosts</title><title>Chemical engineering science</title><description>The present study was focused on elucidating the effects of nanopore diffusional resistance on the activity of
Burkholderia cepacia (BC lipase) lipase immobilized in ordered mesoporous silica hosts. BC lipase was immobilized in ordered SBA-15 hosts possessing 55 and
240
A
˚
diameter pores by physical adsorption. A colorimetric assay of
p-nitrophenyl acetate was employed to determine the lipase catalytic activity. The effect of diffusional resistance on catalytic activity of lipase immobilized in SBA-15 hosts was investigated by determining the effective substrate diffusivity as a function of pore size of the SBA-15 host and enzyme loading. Lipase immobilized in SBA-15-
55
A
˚
exhibited 20–30% of free lipase activity and the activity was further reduced with enzyme loading due to limited accessibility of substrate to the enzyme active sites. Lipase immobilized in SBA-15-
240
A
˚
hosts showed catalytic activity similar to free lipase activity suggesting that diffusional limitations were minimal. Large pore SBA-15 hosts provided an improved environment for BC lipase to retain its catalytic activity.</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Biocatalysis</subject><subject>Burkholderia cepacia</subject><subject>Catalysis</subject><subject>Catalytic reactions</subject><subject>Chemical engineering</subject><subject>Chemistry</subject><subject>Diffusion</subject><subject>Enzyme</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>Mass transfer</subject><subject>Mesoporous</subject><subject>Reactors</subject><subject>Theory of reactions, general kinetics. Catalysis. 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Packings, plates</topic><topic>Mass transfer</topic><topic>Mesoporous</topic><topic>Reactors</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jaladi, Hemachand</creatorcontrib><creatorcontrib>Katiyar, Amit</creatorcontrib><creatorcontrib>Thiel, Stephen W.</creatorcontrib><creatorcontrib>Guliants, Vadim V.</creatorcontrib><creatorcontrib>Pinto, Neville G.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Chemical engineering science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jaladi, Hemachand</au><au>Katiyar, Amit</au><au>Thiel, Stephen W.</au><au>Guliants, Vadim V.</au><au>Pinto, Neville G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of pore diffusional resistance on biocatalytic activity of Burkholderia cepacia lipase immobilized on SBA-15 hosts</atitle><jtitle>Chemical engineering science</jtitle><date>2009-04-01</date><risdate>2009</risdate><volume>64</volume><issue>7</issue><spage>1474</spage><epage>1479</epage><pages>1474-1479</pages><issn>0009-2509</issn><eissn>1873-4405</eissn><coden>CESCAC</coden><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><notes>ObjectType-Article-2</notes><notes>ObjectType-Feature-1</notes><abstract>The present study was focused on elucidating the effects of nanopore diffusional resistance on the activity of
Burkholderia cepacia (BC lipase) lipase immobilized in ordered mesoporous silica hosts. BC lipase was immobilized in ordered SBA-15 hosts possessing 55 and
240
A
˚
diameter pores by physical adsorption. A colorimetric assay of
p-nitrophenyl acetate was employed to determine the lipase catalytic activity. The effect of diffusional resistance on catalytic activity of lipase immobilized in SBA-15 hosts was investigated by determining the effective substrate diffusivity as a function of pore size of the SBA-15 host and enzyme loading. Lipase immobilized in SBA-15-
55
A
˚
exhibited 20–30% of free lipase activity and the activity was further reduced with enzyme loading due to limited accessibility of substrate to the enzyme active sites. Lipase immobilized in SBA-15-
240
A
˚
hosts showed catalytic activity similar to free lipase activity suggesting that diffusional limitations were minimal. Large pore SBA-15 hosts provided an improved environment for BC lipase to retain its catalytic activity.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ces.2008.10.042</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0009-2509 |
| ispartof | Chemical engineering science, 2009-04, Vol.64 (7), p.1474-1479 |
| issn | 0009-2509 1873-4405 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_33700237 |
| source | Elsevier |
| subjects | Adsorption Applied sciences Biocatalysis Burkholderia cepacia Catalysis Catalytic reactions Chemical engineering Chemistry Diffusion Enzyme Exact sciences and technology General and physical chemistry Heat and mass transfer. Packings, plates Mass transfer Mesoporous Reactors Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Effect of pore diffusional resistance on biocatalytic activity of Burkholderia cepacia lipase immobilized on SBA-15 hosts |
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