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Survival of Probiotics in Hypromellose Capsules with Rice or Potato Maltodextrin Excipient.
Journal of Food Science 2016 September 29
There is currently no authorized or established therapeutic level/dose of probiotics for proposed health benefits; however, a daily probiotic consumption of 108 to 1010 CFU has been recommended. This study determined the survival of 5 individual probiotic strains, Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus plantarum, Lactobacillus acidophilus, and Bifidobacterium lactis, along with a mixture of the 5 strains in hypromellose capsules with rice or potato maltodextrin at 4, 25, and 37 °C for 12 mo. Samples were collected monthly and plated on deMan-Rogosa Sharpe agar with 0.05% l-cysteine hydrochloride. Results showed that samples stored at 4 °C had an average count of 108 to 1011 CFU/g of probiotic cells during the 12 mo period, whereas at 25 °C, L. rhamnosus and L. paracasei had an average counts below 108 CFU/g during the storage period. L. rhamnosus was the most vulnerable strain used in this study, having the least viable counts at all 3 storage temperatures. Probiotics stored in rice maltodextrin, on average, had higher probiotic counts compared to those stored in potato maltodextrin. Study suggests that to provide consumers with 108 to 1010 CFU/d of probiotic cells, robust bacterial strains, suitable carriers, and a storage temperature of 4 °C are required.
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