This study aimed to investigate the occurrence of parasitic structures in curly lettuce (Lactuca sativa L.) sold in food stalls open markets in Cuiabá city, in the Brazilian state of Mato Grosso (MT). For this purpose, 50 samples were evaluated using spontaneous sedimentation and centrifugal flotation methods. These techniques showed positivity in 96% (48/50) and 78% (39/50) of the samples, respectively. The sedimentation method was statistically (p ≤ 0.05) more effective in detecting parasitic structures of the pathogens as Entamoeba histolytica, Ascaris spp., Strongyloides spp., Larvae and Hookworm eggs, when comparing both methods. However, these methods did not differ significantly for the detection of Giardia lamblia. Ascaris spp and Entamoeba coli occurred in 64% (32/50) and 46% (23/50) of the positive samples, respectively, with the highest percentages observed. The occurrence of Blastocystis spp., Fasciola spp., Dipylidium caninum and Ascaris lumbricoides revealed detection exclusively by the spontaneous sedimentation method, while Iodamoeba butschlii and Enterobius vermicularis were detected by centrifugal– flotation procedure. These results could reinforce the need to use methods based on sedimentation and the fluctuation of parasite structures in the analysis of lettuce. The presence of parasites in lettuce by fecal origin, with recognized pathogenicity, represents a risk to consumer health and demonstrates a deficit in good agricultural practices in the production, distribution and commercialization of lettuce.
Devido à persistência no ambiente e baixa dose infectante dos helmintos, o monitoramento e controle de sua rota de transmissão para humanos é essencial, sendo uma questão de saúde pública. Esta revisão procurou descrever qual o cenário de prevalência de helmintos em alfaces nas duas últimas décadas (2000 e 2020) no Brasil. Para esse fim, artigos científicos disponíveis online (Scholar.google, Pubmed, Scielo, Redalyc, Scopus, Lilacs, e Science Direct) foram selecionados, aplicando as palavras-chaves: parasitas intestinais, helmintos, alfaces e Brasil. Os critérios de elegibilidade foram alcançados por 42 artigos que analisaram e relataram parasitas das alfaces nas cinco regiões do Brasil. Nos quais encontrou-se 61,07% (2176/3563) das amostras com inúmeros gêneros e espécies de helmintos. Os parasitas mais citados foram Ancilostomídeo em 66,67% dos 42 estudos, Strongyloides spp. 40,48%, Ascaris spp. 38,10%, Ascaris lumbricoides 30,95% e Strongyloides stercolares 26,19%. No entanto, observando a proporção, espécies e gêneros, em relação a número de amostras positivas por estudos que os citam A. lumbricoides teve prevalência de 25,
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