Safety assessment of a proprietary preparation of a novel probiotic, Bacillus coagulans, as a food ingredient
Food and Chemical Toxicology, 2009; 47: 1231–1238
J.R. Endres, A. Clewell, K.A. Jade, T. Farber, J. Hauswirth, and A.G. Schauss
It has been demonstrated that some strains of Bacillus coagulans can survive extremes of heat, acidity of the stomach, and bile acids, to which commonly consumed probiotics are susceptible. A toxicological safety assessment was performed on a proprietary preparation of B. coagulans – GanedenBC30™ – a novel probiotic. Seven toxicologic studies were conducted and included: in vitro bacterial reverse mutation assay; in vitro chromosomal aberration assay; micronucleus assay in mice; acute and 90 day subchronic repeated oral toxicity studies were conducted in Wistar Crl:(WI) BR rats; acute eye and skin irritation studies were conducted in rabbits.
The results of this toxicological safety assessment indicate that GanedenBC30™ B. coagulans does not demonstrate mutagenic, clastogenic, or genotoxic effects. Furthermore, the results of the acute and 90-day subchronic oral toxicity studies in rats resulted in the conclusion of a NOAEL greater than 1000 mg/kg per day. Since the concentration of the cell mass used in the 90-day study was 1.36 × 1011 CFUs/g, this corresponds to 95.2 × 1011 CFUs for a 70 kg human and since the suggested human dose is in the range of 100 × 106 to 3 × 109 CFUs, this gives a safety factor ranging from 3173 to 95,200 times. Based upon scientific procedures and supported by history of use, GanedenBC30™ is considered safe for chronic human consumption.