@article{fdi:010044279,
  title = {{E}valuation of trace elements released by edible clays in physicochemically simulated physiological media},
  author = {{O}dilon {K}ikouama, {J}. {R}. and {L}e {C}ornec, {F}lorence and {B}outtier, {S}. and {L}aunay, {A}. and {B}ald{\'e}, {L}. and {Y}agoubi, {N}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}hysicochemical simulation (p{H}, electrolytes and temperature) of three physiological media was carried out in order to follow the release of trace elements contained in seven edible clays (mainly kaolinite, illite, muscovite and quartz) collected from the {W}est {A}frican countries of {C}ote d'{I}voire, {G}uinee and {S}enegal. {T}hese clays are ingested by pregnant women for diverse reasons that are related to their condition. {S}imulated oral (6.5p{H}7), stomach (p{H} approximately 1.8) and intestinal (p{H} approximately 8.3) media were prepared separately in order to compare the quantities of the trace elements released. {S}amples were analyzed by inductively coupled plasma emission spectrometry and spectrophotometry for the evaluation of copper, iron (({F}e({II}) and {F}e({III})), lead, manganese, nickel and zinc, since some of these elements can palliate deficiency problems and others can induce toxic effects. {T}he quantities of the chemical elements released were p{H} dependent. {T}he lower the p{H}, the higher the quantities of copper, {F}e({III}) and zinc. {T}he quantities of {F}e({II}) were similar at both lower (stomach) and higher (intestinal) p{H} values. {H}owever, the quantities of manganese, nickel and lead were lower than quantification limits. {H}eating (110{C}) of the clays increased the quantities of trace elements released and could also participate in the microbiological 'decontamination' of raw materials. {M}icrobiological analysis shows that all samples tested were in compliance with the recommendations of the {E}uropean {P}harmacopoeia. {T}o verify the existence of possible beneficial and hazardous effects on human health, the quantities of copper, iron and zinc were compared with the recommended allowances for trace elements in {F}rance. {I}n addition, the quantities of manganese, nickel and lead were compared with the maximum admissible concentrations in drinking water.},
  keywords = {{E}dible clays ; trace elements ; kinetic release ; physicochemically ; simulated physiological media ; microbiological quality},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {F}ood {S}ciences and {N}utrition},
  volume = {60},
  numero = {2},
  pages = {130--142},
  ISSN = {0963-7486},
  year = {2009},
  DOI = {10.1080/09637480701614956},
  URL = {https://www.documentation.ird.fr/hor/fdi:010044279},
}