Analysis of the optical properties of bile (Articolo in rivista)

Type
Label
  • Analysis of the optical properties of bile (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1117/1.430003 (literal)
Alternative label
  • F.Baldini; P.Bechi; F.Cianchi; A.Falai; C.Fiorillo; P.Nassi (2000)
    Analysis of the optical properties of bile
    in Journal of biomedical optics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F.Baldini; P.Bechi; F.Cianchi; A.Falai; C.Fiorillo; P.Nassi (literal)
Pagina inizio
  • 321 (literal)
Pagina fine
  • 329 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 5 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Ricerca sulle Onde Elettromagnetiche ''Nello Carrara'' del CNR Clinica Chirurgica III, Universita` degli Studi di Firenze Dipartimento Scienze Biochimiche, Universita` degli Studi di Firenze (literal)
Titolo
  • Analysis of the optical properties of bile (literal)
Abstract
  • Invasive bile determination is very useful in the diagnosis of many gastric pathologies. At the moment, this measurement is performed with Bilitec 2000, an optical fiber sensor, that is based on absorption by bilirubin. Nevertheless, erroneous evaluations are possible, due to the different configurations which the bilirubin molecule can adopt. The optical behavior of human samples of pure bile and bile+gastric juice has been examined using an optical fiber spectro-photometer and two suitably modified Bilitec 2000 units. A protocol has been established for the treatment of biological fluids, in order to make it possible to study the behavior of their optical properties as a function of pH and concentration without causing any alteration in the samples. The analysis of pH dependence evidenced the presence of different calibration curves at different pH values: the self-aggregation of the bilirubin molecules observed in pure bile samples was almost totally absent in the gastric samples. Measurements carried out on Bilitec 2000 showed that the most appropriate wavelength for bilirubin detection in the stomach should be 470 nm. (literal)
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