Thermodynamic and Structural Aspects of Internal Wool Lipids
Thermotropic physicochemical techniques such as differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and electron paramagnetic resonance (EPR) were applied to liposomes made up of internal wool lipids. These vesicles can be regarded as a model of wool membranes. D...
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| Veröffentlicht in: | Langmuir 2000-05, Vol.16 (11), p.4808-4812 |
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| container_title | Langmuir |
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| creator | Fonollosa, Jordi Martí, Meritxell de la Maza, Alfons Sabés, Manel Parra, José Luis Coderch, Luisa |
| description | Thermotropic physicochemical techniques such as differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and electron paramagnetic resonance (EPR) were applied to liposomes made up of internal wool lipids. These vesicles can be regarded as a model of wool membranes. Differences in fluidity obtained from EPR allow us to deduce a high rigidity of the polar external section of the vesicle in contrast to the high fluidity of the hydrophobic internal section, which accounts for the thermotropic properties of the liposome. The coincidence of the thermotropic changes obtained with the EPR, FTIR, and DSC techniques allows us to infer a reversible phase transition temperature in the range of 30−40 °C, indicating a transition from a mixture of hexagonal gel−liquid crystal state to a single liquid crystal state. |
| doi_str_mv | 10.1021/la991084w |
| format | Article |
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These vesicles can be regarded as a model of wool membranes. Differences in fluidity obtained from EPR allow us to deduce a high rigidity of the polar external section of the vesicle in contrast to the high fluidity of the hydrophobic internal section, which accounts for the thermotropic properties of the liposome. The coincidence of the thermotropic changes obtained with the EPR, FTIR, and DSC techniques allows us to infer a reversible phase transition temperature in the range of 30−40 °C, indicating a transition from a mixture of hexagonal gel−liquid crystal state to a single liquid crystal state.</description><identifier>ISSN: 0743-7463</identifier><identifier>EISSN: 1520-5827</identifier><identifier>DOI: 10.1021/la991084w</identifier><language>eng</language><publisher>American Chemical Society</publisher><subject>Biological materials ; Biological membranes ; Differential scanning calorimetry ; Fourier transform infrared spectroscopy ; Hydrophobicity ; Paramagnetic resonance ; Phase transitions ; Structure (composition) ; Temperature ; Thermodynamic properties</subject><ispartof>Langmuir, 2000-05, Vol.16 (11), p.4808-4812</ispartof><rights>Copyright © 2000 American Chemical Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a326t-1ed203ffe1d858747207da890aaea5ed0597c93d3767483bde28704c38a948803</citedby><cites>FETCH-LOGICAL-a326t-1ed203ffe1d858747207da890aaea5ed0597c93d3767483bde28704c38a948803</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/la991084w$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/la991084w$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,777,781,2752,27057,27905,27906,56719,56769</link.rule.ids></links><search><creatorcontrib>Fonollosa, Jordi</creatorcontrib><creatorcontrib>Martí, Meritxell</creatorcontrib><creatorcontrib>de la Maza, Alfons</creatorcontrib><creatorcontrib>Sabés, Manel</creatorcontrib><creatorcontrib>Parra, José Luis</creatorcontrib><creatorcontrib>Coderch, Luisa</creatorcontrib><title>Thermodynamic and Structural Aspects of Internal Wool Lipids</title><title>Langmuir</title><addtitle>Langmuir</addtitle><description>Thermotropic physicochemical techniques such as differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and electron paramagnetic resonance (EPR) were applied to liposomes made up of internal wool lipids. 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The coincidence of the thermotropic changes obtained with the EPR, FTIR, and DSC techniques allows us to infer a reversible phase transition temperature in the range of 30−40 °C, indicating a transition from a mixture of hexagonal gel−liquid crystal state to a single liquid crystal state.</description><subject>Biological materials</subject><subject>Biological membranes</subject><subject>Differential scanning calorimetry</subject><subject>Fourier transform infrared spectroscopy</subject><subject>Hydrophobicity</subject><subject>Paramagnetic resonance</subject><subject>Phase transitions</subject><subject>Structure (composition)</subject><subject>Temperature</subject><subject>Thermodynamic properties</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNpt0E9LwzAYx_EgCs7pwXfQi4KH6pMmbRLwMoa6ycA_nXoMMUmxs21q0qJ7925UdvL0wMOH3-GL0CmGSwwJvqqUEBg4_d5DI5wmEKc8YftoBIySmNGMHKKjEFYAIAgVI3S9_LC-dmbdqLrUkWpMlHe-113vVRVNQmt1FyJXRPOms77Z_N6cq6JF2ZYmHKODQlXBnvzdMXq5vVlOZ_Hi4W4-nSxiRZKsi7E1CZCisNjwlDPKEmBGcQFKWZVaA6lgWhBDWMYoJ-_GJpwB1YQrQTkHMkbnw27r3VdvQyfrMmhbVaqxrg8ywRRnQLbwYoDauxC8LWTry1r5tcQgt33krs_GxoMtQ2d_dlD5T5kxwlK5fMxlLvJ7_vz0KmcbfzZ4pYNcuX4bI_yz-wsv2nJ4</recordid><startdate>20000530</startdate><enddate>20000530</enddate><creator>Fonollosa, Jordi</creator><creator>Martí, Meritxell</creator><creator>de la Maza, Alfons</creator><creator>Sabés, Manel</creator><creator>Parra, José Luis</creator><creator>Coderch, Luisa</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20000530</creationdate><title>Thermodynamic and Structural Aspects of Internal Wool Lipids</title><author>Fonollosa, Jordi ; Martí, Meritxell ; de la Maza, Alfons ; Sabés, Manel ; Parra, José Luis ; Coderch, Luisa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a326t-1ed203ffe1d858747207da890aaea5ed0597c93d3767483bde28704c38a948803</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Biological materials</topic><topic>Biological membranes</topic><topic>Differential scanning calorimetry</topic><topic>Fourier transform infrared spectroscopy</topic><topic>Hydrophobicity</topic><topic>Paramagnetic resonance</topic><topic>Phase transitions</topic><topic>Structure (composition)</topic><topic>Temperature</topic><topic>Thermodynamic properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fonollosa, Jordi</creatorcontrib><creatorcontrib>Martí, Meritxell</creatorcontrib><creatorcontrib>de la Maza, Alfons</creatorcontrib><creatorcontrib>Sabés, Manel</creatorcontrib><creatorcontrib>Parra, José Luis</creatorcontrib><creatorcontrib>Coderch, Luisa</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><jtitle>Langmuir</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fonollosa, Jordi</au><au>Martí, Meritxell</au><au>de la Maza, Alfons</au><au>Sabés, Manel</au><au>Parra, José Luis</au><au>Coderch, Luisa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermodynamic and Structural Aspects of Internal Wool Lipids</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2000-05-30</date><risdate>2000</risdate><volume>16</volume><issue>11</issue><spage>4808</spage><epage>4812</epage><pages>4808-4812</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><abstract>Thermotropic physicochemical techniques such as differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and electron paramagnetic resonance (EPR) were applied to liposomes made up of internal wool lipids. 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| language | eng |
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| source | American Chemical Society |
| subjects | Biological materials Biological membranes Differential scanning calorimetry Fourier transform infrared spectroscopy Hydrophobicity Paramagnetic resonance Phase transitions Structure (composition) Temperature Thermodynamic properties |
| title | Thermodynamic and Structural Aspects of Internal Wool Lipids |
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