Bifidobacterium animalis ssp. lactis ATCC27536 and Lactobacillus acidophilus ATCC4356 were encapsulated in a conjugated whey protein hydrolysate (WPH10) through spray drying. Probiotic cultures were added at the ratio of 1:1 into the conjugated WPH10 solution at a spiking level of about 10 log10 cfu/mL. The mixture was spray dried in a Niro drier with inlet and outlet temperatures of 200 °C and 90 °C, respectively. The final dried product was determined for cell viability and further stored for 16 wk at 25°, 4°, and -18 °C to monitor viability and functionality. Micro images showed the presence of link bridges in non-conjugated WPH10, whereas, in the case of conjugated WPH10, round particles with pores were observed. The mean probiotic counts before and after spray drying were 10.59 log10 cfu/mL and 8.98 log10 cfu/g, respectively, indicating good retention of viability after spray drying. The solubility and wetting time of...

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