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Protective effects of yacon (Smallanthus sonchifolius) intake on experimental colon carcinogenesis
Nelci A de Moura1, Brunno F R Caetano, Kátia Sivieri
1UNESP Sao Paulo State University, Institute of Biosciences, Program of Post-Graduation in General and Applied Biology Program, Botucatu 18618-970, SP, Brazil.
Abstract:
Yacon (Smallanthus sonchifolius), a tuberous root native to the Andean region of South America, contains high concentration of fructans with potential for colon cancer prevention. This study investigated the potential beneficial of yacon intake on colon carcinogenesis induced by 1,2-dimethylhydrazine (DMH) in male Wistar rats. After 4 weeks of DMH-initiation, groups were fed basal diet (G1 and G6) or basal diet containing dried extract of yacon root at 0.5% (G2), 1.0% (G3 and G5) or a synbiotic formulation (G4) (1.0% yacon plus Lactobacillus casei at 2.5 × 10(10)CFU per g diet) for 13 weeks. At week 20, a significant reduction in number and multiplicity of aberrant crypt foci (ACF) and in number of invasive adenocarcinomas was observed in the groups orally treated with 1.0% yacon (G3) or the synbiotic formulation (G4) (0.05
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