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20231223052956.0 |
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231223s2004 xx ||||| 00| ||eng c |
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|a pubmed24n0500.xml
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|a (DE-627)NLM150025793
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|a (NLM)15323501
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wilson, Craig D
|e verfasserin
|4 aut
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| 245 |
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|a Electrochemical quartz crystal nanobalance study of the adsorption/displacement phenomena of proteins and lipids on Pt
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| 264 |
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 10.03.2006
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a The electrochemical quartz crystal nanobalance (EQCN) was used to measure the adsorption behavior of a series of lipids (stearate, oleate, linoleate, and gamma-linolenate) on a Pt surface from a phosphate buffer pH 7.0 solution at 295 K and to investigate their adsorption/displacement behavior with the proteins, beta-lactoglobulin and alpha-lactalbumin, which are known to cause fouling during milk processing. The EQCN technique and the complementary technique of cyclic voltammetry measured simultaneously provided information on the efficiency of solubilization of the proteins by these lipids. Excellent agreement was obtained for the surface concentration of adsorbed lipid from the surface charge density from cyclic voltammetry measurements and the change in mass from the EQCN frequency measurements. The Gibbs energy of adsorption showed the lipids to have a strong affinity for the platinum surface. Addition of protein to a preadsorbed lipid layer showed alpha-lactalbumin to be able to coadsorb with the lipids, while beta-lactoglobulin was able to desorb some of the unsaturated lipids but appeared to coadsorb with the saturated lipid, stearate. Addition of lipid to a preadsorbed protein layer showed the unsaturated lipids to be able to displace some of the protein. A comparison of the desorption ability of the lipids showed stearate to be very inefficient at removing protein, while the other three lipids were able to remove each of the proteins, with the order of efficiency for protein desorption being oleate > linoleate > gamma-linolenate
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Linoleic Acids
|2 NLM
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|a Lipids
|2 NLM
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|a Proteins
|2 NLM
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|a Stearic Acids
|2 NLM
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|a Quartz
|2 NLM
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| 650 |
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|a 14808-60-7
|2 NLM
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|a Oleic Acid
|2 NLM
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| 650 |
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|a 2UMI9U37CP
|2 NLM
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| 650 |
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|a Platinum
|2 NLM
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| 650 |
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|a 49DFR088MY
|2 NLM
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| 650 |
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|a stearic acid
|2 NLM
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| 650 |
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|a 4ELV7Z65AP
|2 NLM
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| 650 |
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|a Lactalbumin
|2 NLM
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|a 9013-90-5
|2 NLM
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1 |
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|a Roscoe, Sharon G
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 20(2004), 18 vom: 31. Aug., Seite 7547-56
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:20
|g year:2004
|g number:18
|g day:31
|g month:08
|g pages:7547-56
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|a AR
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|d 20
|j 2004
|e 18
|b 31
|c 08
|h 7547-56
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