Probiotic wheat sprouts: A novel functional food developed through Lacticaseibacillus casei inoculation with improved bioactivity and probiotic survival
Barkousaraei, H. H.; Vazifeh, M. M.; Yaghoubi-Avini, M.; Shambayati, G.
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In this research we inoculated Lacticaseibacillus casei (L. casei) into wheat sprouts and studied the viability of the bacteria in the sprout. L. casei (ATCC39392) strain was inoculated into sterilized wheat sprouts. The height of the sprouts and roots were checked and the active phenolic content, flavonoid compounds, and the antioxidant activity were measured. The bacterial viability was determined under simulated gastrointestinal (SGI) conditions. The physicochemical properties of the final product and its organoleptic properties were also investigated. The final confirmation of the presence of bacteria was also done by transmission electron microscope imaging. The number of bacteria increased from 8.18 Log CFU/g to 11.81 {+/-} 0.33 Log CFU/g. The increase in the phenolic content and antioxidant activity indicates the improvement of the nutritional value of the sprout. The physicochemical properties of the product changed due to the activity of bacteria. The inoculated bacteria also survived after exposure to SGI. The organoleptic properties of the product did not reveal a significant difference between the control and treatment groups. The increase in the number of bacteria and their survival after exposure to SGI indicates the suitable condition of wheat sprout as a proper substrate for L. casei bacteria.
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