The ethyopathogeny of the peptic ulcer presents diverse factors that contribute for the aggression to the gastroduodenal mucosa, being that the alimentary habit can be an unleash factor, the paraense population presents excellent characteristic how much to the alimentary habit, in result of the food ingestion derived from the cassava contends cyanogenic glycosides, being that this work has the objective to determine of urinary thiocyanate concentration in carriers of peptic ulcer being considered the presence of Helicobacter pylori and comparing with healthy individuals in accordance with the level of ingestion of these foods. The used analytical method was spectrophotometry (UV), being that the gotten results had presented average values of 0.7619 ± 0,4859 mg SCN-/L, 0,9258 ± 0,5701 mg SCN-/L and 1,2467 ± 0,8236 mg SCN-/L in those with low, moderate and hide ingestion of cyanogenic glycosides respectively, concluding itself that the method used in the paraense food is efficient, the carrying individuals of peptic ulcer H. pylori (positive) had presented average texts of thiocianate of 0.4913 ± 0.3841mg SCN-/L, while that the H.pylori (negative) values of 0.2463 ± 0,2922 mg SCN-/L, therefore, the ingestion of cyanogenic glycosides did not intervene with the growth of the bacterium in the gastrintestinal treatment.
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