Spores of Bacillus subtilis including one strain used commercially were evaluated for their potential value as a probiotic and as potential food additives. Two isolates of B. subtilis examined here were HU58, a human isolate and PXN21, a strain used in an existing commercial product. Compared to a domesticated laboratory strain of B. subtilis both isolates carried traits that could prove advantageous in the human gastro-intestinal tract. This included full resistance to gastric fluids, rapid sporulation and the formation of robust biofilms. We also showed that PXN21 spores when administered weekly to mice conferred non-specific cellular immune responses, indicative signs of the stimulation of innate immunity. Spores mixed in wholemeal biscuits were found to survive baking at 235 °C for 8 minutes with only a 1-log reduction in viability. That spores can survive the baking process offers the possibility of using spores as probiotic supplements in a range of novel food products.
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All Time | Past 365 days | Past 30 Days | |
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Abstract Views | 922 | 585 | 26 |
Full Text Views | 33 | 15 | 0 |
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Spores of Bacillus subtilis including one strain used commercially were evaluated for their potential value as a probiotic and as potential food additives. Two isolates of B. subtilis examined here were HU58, a human isolate and PXN21, a strain used in an existing commercial product. Compared to a domesticated laboratory strain of B. subtilis both isolates carried traits that could prove advantageous in the human gastro-intestinal tract. This included full resistance to gastric fluids, rapid sporulation and the formation of robust biofilms. We also showed that PXN21 spores when administered weekly to mice conferred non-specific cellular immune responses, indicative signs of the stimulation of innate immunity. Spores mixed in wholemeal biscuits were found to survive baking at 235 °C for 8 minutes with only a 1-log reduction in viability. That spores can survive the baking process offers the possibility of using spores as probiotic supplements in a range of novel food products.
All Time | Past 365 days | Past 30 Days | |
---|---|---|---|
Abstract Views | 922 | 585 | 26 |
Full Text Views | 33 | 15 | 0 |
PDF Views & Downloads | 41 | 22 | 0 |