[article]
| Titre : |
Photosynthesis-inhibiting effects of cationic biodegradable gemini surfactants |
| Type de document : |
texte imprimé |
| Auteurs : |
K. Krà l'ovà , Auteur ; F. Sersen, Auteur ; F. Devinsky, Auteur ; I. Lacko, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
p. 288-295 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Surfactants
|
| Tags : |
'Surfactants gemini' 'Chlorella vulgaris' 'Dérivés des diamides de l'acide succinique' 'Inhibition transport photosynthétique d'électron' Chloroplastes |
| Index. décimale : |
668.1 Agents tensioactifs : savons, détergents |
| Résumé : |
Cationic biodegradable gemini surfactants 3,8-diaza-4,7-dioxodecane-1,10-diylbis(alkyldimethylammonium bromide) (I) with R = C9H19–C18H37 inhibited photosynthetic electron transport (PET) in spinach chloroplasts and reduced chlorophyll (Chl) content in Chlorella vulgaris. The inhibitory effects of I intensively depended on the length of alkyl chain showing quasi-parabolic (Chlorella vulgaris) or bilinear (PET) course. IC50 value related to reduction of Chl content in C. vulgaris for dodecyl derivative was 0.6 × 10–6 mol dm–3 indicating its strong anti-algal effect. Using EPR spectroscopy as the site of inhibitory action of I in the photosynthetic apparatus the intermediates Z* and D* or their close surroundings were determined. As a further target of I inhibitory action the manganese cluster occurring on the donor side of photosystem II was estimated. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9954 |
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 5/2010 (09-10/2010) . - p. 288-295
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