Effect of symbiotic interaction between a fructooligosaccharide and probiotic on the kinetic fermentation and chemical profile of maize blended rice beverages

There is an important demand for the development of new non-dairy probiotic beverages in the functional food market. This work aimed to develop new fermented beverages from maize and rice. Lactobacillus plantarum CCMA 0743, Torulaspora delbrueckii CCMA 0235, and the commercial probiotic Lactobacillus acidophilus LACA 4, were used as a mixed starter culture. Two prebiotic concentrations, 20 and 50g/L fructooligosaccharide (FOS) were tested. The growth of L. acidophilus LACA 4 was favored by 50g/L FOS and after refrigerated storage at 4°C for 28days, its population remained above 107CFU/mL. Lactic and acetic acids were the main organic acids detected, at around 3.7 and 0.5g/L, respectively. Ethanol was present at 50% of consumers liked slightly or liked extremely the beverages (scores from 6−9). Therefore, potential symbiotic cereal beverages were successfully obtained using a mix of lactic acid bacteria and yeast as a starter culture. This is an important step in the commercial production of alternative beverages from common food substrates for consumers. [Display omitted] •Non-dairy fermented beverages from maize and rice were developed.•The sensory analysis showed that consumers liked slightly or liked extremely the beverages.•Symbiotic cereal beverages were obtained using LAB and yeast as a starter culture.•FOS was important to maintain the viable probiotic population until refrigeration.•Beverages with FOS received scores significantly higher than the controls.