Температурно-програмована десорбційна мас-спектрометрія бичачого сироваткового альбуміну в конденсованому стані і адсорбованого на поверхні високодисперсних оксидів
Properties of bovine serum albumin (BSA) were studied by temperature-programmed desorption mass spectrometry (TPD MS) both in condensed state and as adsorbed on the surface of mixed ultrafine oxides. As a result of thermolysis, decomposition of amino acid residues occurred in several stages. Maxima...
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| Datum: | 2008 |
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| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2008
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| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/304 |
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| Назва журналу: | Surface |
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Surface| Zusammenfassung: | Properties of bovine serum albumin (BSA) were studied by temperature-programmed desorption mass spectrometry (TPD MS) both in condensed state and as adsorbed on the surface of mixed ultrafine oxides. As a result of thermolysis, decomposition of amino acid residues occurred in several stages. Maxima of temperature dependencies of decomposition rate of amino acid residues coincided with those of water evolution from the samples under investigation. The most intense maximum of hydrogen sulfide evolution was observed at 200 ºC for condensed BSA and that adsorbed on the surface of titania/silica (TS20) at pH 4.8. This maximum was absent for adsorption of BSA on alumina/silica (AS1) at pH 2.5 and 7.0. Besides, maximum of water evolution was present at 100 ºC for all alumina-containing samples. |
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