Ciência e Tecnologia de Leite e Produtos Lácteos Sem Lactose

Encapsulated Bifidobacterium BB-12 addition in a concentrated lactose-free yogurt: Its survival during storage and effects on the product's properties

“…However, in the present study, the greatest change was found for the spray-dried powder 1, in which there was a decrease in viability over time, varying from 1.95-6.83%, but like the others, remained within the probiotic pattern (equal to or greater than 6 log CFU g −1 of the product). As documented by our previous study (Dantas et al, 2021a), spray-dried powder 1 presented the largest initial moisture and a w (7.67 g 100 g −1 and 0.396, respectively). Liu et al (2016) stated that the higher the moisture content, the lower the bacterial survival during storage, and that therefore, an ideal moisture content would be around 4 g 100 g −1 .…”

“…Considering that different combinations of wall materials can result in spraydried powders with different physical characteristics and structures, and based on the previous results obtained by Dantas et al (2021a) and Dantas et al (2021b), we noted the importance to evaluate the impact of the application of these spray-dried powders on the lactose-free skyr-style yogurt. In this context, this study aimed to investigate the potential of spray drying encapsulation of Bifidobacterium BB-12 with lactose-free milk, lactose-free milk and inulin, and lactose-free milk and oligofructose in the production of a concentrated lactose-free yogurt.…”

“…In this study, lactose-free skim milk was used as an innovative wall material for Bifidobacterium BB-12 encapsulation. Dantas et al (2021a) observed better survival rates in spray-dried powders with encapsulated bifidobacteria (80 to 88%) than bifidobacteria-free cells (~75%), after in vitro gastrointestinal condition stages. These results encourage us to obtain an innovative dairy product.…”

“…Since lactose intolerance affects approximately 75% of the adult world population (Suri et al, 2019), products free of this disaccharide are essential to make up the diet of intolerant people. To avoid traces of lactose contamination in dairy products, lactose-free milk and prebiotics were used by Dantas, Verruck, de Liz, Hernandez, and Prudencio (2021a), aiming the future application of probiotic spray-dried powders in lactose-free dairy products. In this study, lactose-free skim milk was used as an innovative wall material for Bifidobacterium BB-12 encapsulation.…”

Current knowledge about physical properties of innovative probiotic spray-dried powders produced with lactose-free milk and prebiotics

“…The parameters such as moisture content, particle size distribution, and morphology can affect the bulk density of spray-dried powders (Rajam & Anandharamakrishnan, 2015). In our previous work (Dantas, Verruck, De Liz, Hernandez, & Prudencio, 2021), we measured the loose bulk density of the powders. It was possible to verify that the spray-dried powder 3 showed a significant variation (P < 0.05) of this property (0.44 g cm −3 against 0.32 g cm −3 for both spray-dried powders 1 and 2).…”