Enriching beverages with useful compounds such as probiotics and prebiotics is of particular importance in the food industry due to the lack of consumption restrictions by certain people due to the lack of lactose and cholesterol, as well as (vitamins, antioxidants and
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Enriching beverages with useful compounds such as probiotics and prebiotics is of particular importance in the food industry due to the lack of consumption restrictions by certain people due to the lack of lactose and cholesterol, as well as (vitamins, antioxidants and minerals). In this study, first appropriate amounts of oligofructose were selected as prebiotic material and then a mixture of vegetable water produced in proportions of 20, 30 and 40% was prepared and inoculation of Lactobacillus casei strain by half McFarland method at two levels of 106 and 107 cfu/ml were performed. All physicochemical tests such as pH, acidity, Brix and microbial count were evaluated before fermentation, after 72 hours of fermentation at 37°C and during four weeks of storage at 4°C. Reduced glucose and total glucose were evaluated before fermentation, after 72 and 4 weeks of fermentation. During fermentation and storage, with increasing bacterial density and storage time, pH, Brix, reducing sugar and total sugar of probiotic beverages decreased and acidity increased significantly. The highest survival rate of probiotic bacteria during 28 days of storage related to A3B2 treatment (with bacterial density of 107 CFU/ml) was selected as the best treatment according to the results.
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