Geuns, Jan × Malheiros, R.D. Moraes, VMB Decuypere, V.M.B. Compernolle, F Buysse, Johan #
American Chemical Society, Books and Journals Division
Journal of Agricultural and Food Chemistry vol:51 pages:1095-1101
In intubation experiments (643-1168 mg per animal), most of the administered stevioside was recovered unchanged in the excreta and only about 2 % was converted into steviol. Neither stevioside nor steviol could be found in the blood. In chronic studies (667 mg stevioside/kg feed) with laying hens and meat-type chickens no significant differences were found in feed uptake, weight gain and feed conversion. The egg production and egg composition of laying hens were not influenced. Most of the stevioside taken up was found untransformed in the excreta and about 21.5 % or 7.3 % was converted to steviol by meat-type chickens or laying hens respectively. No stevioside or steviol could be detected in the blood or in the eggs of the different groups of animals. In anaerobic incubation experiments with chicken excreta only a 20 % conversion of stevioside into steviol was found. No harmful effects were observed in the chronic stevioside supplementation experiments nor in the intubation experiments in which very high stevioside doses were given.