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Cited by 115 publications
(53 citation statements)
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“…16 Metal ions are complexed by citrate generally via the C1 and C3 carboxylates and the C3 hydroxyl group. Hamm et al 17 concluded on the basis of titration data that the iron(III)−citric acid complex behaves as a tetrabasic acid, whereas the corresponding iron(II)−citrate exhibits tribasic behavior; similar findings were reported by Francis and Dodge. 14 Conductometric titration of ferric sulfate with excess trisodium citrate suggest complexes with stoichiometries of Fe 3+ 2 (cit) 3 and Fe 3+ 5 (cit) 4 , whereas titration with excess free citric acid indicates complexes of Fe 3+ 3 (cit) 2 ; thermometric titrations support the formation of both Fe 3+ 2 (cit) 3 and Fe 3+ 3 (cit) 2 .…”
Section: ■ Introductionsupporting
confidence: 62%
“…16 Metal ions are complexed by citrate generally via the C1 and C3 carboxylates and the C3 hydroxyl group. Hamm et al 17 concluded on the basis of titration data that the iron(III)−citric acid complex behaves as a tetrabasic acid, whereas the corresponding iron(II)−citrate exhibits tribasic behavior; similar findings were reported by Francis and Dodge. 14 Conductometric titration of ferric sulfate with excess trisodium citrate suggest complexes with stoichiometries of Fe 3+ 2 (cit) 3 and Fe 3+ 5 (cit) 4 , whereas titration with excess free citric acid indicates complexes of Fe 3+ 3 (cit) 2 ; thermometric titrations support the formation of both Fe 3+ 2 (cit) 3 and Fe 3+ 3 (cit) 2 .…”
Section: ■ Introductionsupporting
confidence: 62%
“…Our studies showed that altering iron levels also had a marked effect on resistance to pentamidine. This is in agreement with the observation that citric and gluconic acids can act as iron-chelating agents [60,61] and respiration activity in the presence of these compounds at the pentamidine concentrations tested were significantly altered (S3 Fig). Many clinically relevant antimicrobials have shown to be affected by the presence of iron, including compounds belonging to tetracycline, aminoglycoside and quinolone classes [22]. Activity of these compounds can be altered by numerous factors, including the formation of stable complexes which can affect drug efficacy or have unfavourable effects on patient health.…”
Section: Discussionsupporting
confidence: 91%
“…The following formation constants were used: for Fe(III), log K ϭ 9. (16,22,32,33). Biodegradation of metal-citrate complexes.…”
Section: Methodsmentioning
confidence: 99%
“…Thermodynamic constants in the MINTEQA2 database were used in the calculations. The following formation constants were used: for Fe(III), log K ϭ 9.4 for [Fe(OH)Cit] Ϫ , where Cit is citrate, and log K ϭ 2.6 for [Fe(OH) 2 Cit] 2Ϫ ; for U-citrate, log K ϭ 7.4 for the mononuclear (UO 2 Cit) Ϫ and log K ϭ 18.9 for the binuclear [(UO 2 ) 2 (Cit) 2 ] 2Ϫ (16,22,32,33). Biodegradation of metal-citrate complexes.…”
mentioning
confidence: 99%