2004
DOI: 10.1016/j.jchromb.2004.08.019
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Determination of porphyrins and biliverdin in bile and excreta of birds by a single liquid chromatography–ultraviolet detection analysis

Abstract: Methods developed for porphyrin analysis have low recoveries and/or poor precision for the less polar protoporphyrin IX. We describe a simple method of analysis of porphyrins and biliverdin in bile and excreta of birds based on extraction with HCl 3N: acetonitrile and HPLC/UV analyses. Recoveries were good for protoporphyrin IX and other porphyrins (>79%). Applications of this method showed that porphyrins and biliverdin in birds excreta are mainly of biliary-fecal origin rather than urinary origin. Biliverdin… Show more

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Cited by 25 publications
(31 citation statements)
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“…Biliverdin analysis was based on the method described by Mateo et al (2004) with some modifications. Biliverdin was extracted from 7-to 19-mg eggshell pieces from the equatorial region of one egg (fourth) per clutch by adding 315 ll acetonitrile and 263 ll HCl 3N.…”
Section: Biliverdin Analysismentioning
confidence: 99%
“…Biliverdin analysis was based on the method described by Mateo et al (2004) with some modifications. Biliverdin was extracted from 7-to 19-mg eggshell pieces from the equatorial region of one egg (fourth) per clutch by adding 315 ll acetonitrile and 263 ll HCl 3N.…”
Section: Biliverdin Analysismentioning
confidence: 99%
“…We determined eggshell porphyrins and biliverdin levels following the method described in Mateo et al (2004) with some modifications (See SI for more details).…”
Section: Measurement Of Thickness and Pigment Concentrations In Eggshmentioning
confidence: 99%
“…Porphyrins and biliverdin were determined in excreta and bile of geese by high-pressure liquid chromatography with ultraviolet detection [14]. As porphyrins and biliverdin have a common biliary origin in bird excreta, porphyrin concentrations in excreta were expressed relative to biliverdin in order to compensate for variation in the amount of feces excreted due to variation in the diet.…”
Section: Chemical Analysesmentioning
confidence: 99%
“…Two of the elements in higher concentrations in the contaminated Aznalcóllar sludge were Pb and Zn; thus, the risk of poisoning of waterfowl inhabiting the Guadalquivir Marshes may resemble the scenario of the Coeur d'Alene River basin in Idaho, USA, where analyses of fecal excreta were used to relate soil ingestion to the exposure to heavy metals in birds [13]. Moreover, this noninvasive sampling provides evidence of toxic effects of heavy metals and As in birds from the analysis of porphyrins and biliverdin in fecal excreta [14].…”
Section: Introductionmentioning
confidence: 99%