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Abstract: Rice gruel and rice starch reduce sorbitol-induced diarrhoea in cecectomized rats. Islam MS, Nishiyama A, Sakaguchi E. Department of Biochemistry, Gono University, Mirzanagar, Savar, Dhaka, Bangladesh. BACKGRO UND/AIMS: Sorbitol (S), a widely used sugar substitute in sugar-free products, has shown intolerance manifested by abdominal pain, bloating and diarrhoea in children and adults. The nutritional and S-induced diarrhoea-preventive effect of rice gruel (RG) and rice starch (RS) was studied in cecectomized rats. METHODS: During the 41-day experimental period, control, RG or RS, S, and S+RG or RS-containing diets were provided in four consecutive phases. The diet compositions were changed depending on the conditions of the diarrhoea. Faecal appearances of S- and S+RG/RS-fed groups were observed daily and scored (diarrhoea = 2, mixed fae ces = 1, normal faeces = 0) to evaluate the degree of diarrhoea. RESULTS: The diarrhoeal scores were significantly (p < 0.05) decreased in all phases of the RG- or RS-fed group compared to the control group (S). Serum lipid and colonic organic acid concentrations were decreased while faecal bile acids and neutral sterol concentrations were increased in the RG-fed group compared to the control which were measured in the samples collected from the last phase of the experiment. CONCLUSION: These results indicate that RG and RS may be useful additives in S-containing food products to prevent the possible risk of diarrhoea in humans. Copyright (c) 2005 S. Karger AG, Basel. PMID: 16103671 [PubMed - indexed for MEDLINE]