Thus, the การร่วมเพาะเลี้ยง made of one การเปลี่ยนแป้งเป็นน้ำตาล and one probiotic strain were employed in the fermentation of ข้าวต้ม made of rice flour and soy milk, in order to verify if they are more able than the single cultures in promoting an improvement of some biotechnological and physical aspects of the fermented product. The aim of this study was to evaluate the influence of the composition of ingredients of the food matrix and of bacterial culture on the apparent viscosity and flux behavior during fermentation of rice/soy milk ข้าวต้ม. In order to explain the findings on rheology, supplementary experiments were done on kinetics of acidification and แอลฟาอะไมโลไรทิค activity of the bacteria as well as the analysis of microstructure of the fermented products through scanning electron microscopy. To the best of our knowledge, it is the first time that การเปลี่ยนแป้งเป็นน้ำตาล lactic acid bacteria isolated from vegetable matrices are used in co-culture with commercial and dairy-adapted probiotic bacteria strains in the fermentation of a soy milk/rice food matrix for the production of a yoghurt-like food.