Evaluation of the in vitro cholesterol-lowering activity of the probiotic strain Bacillus coagulans MTCC 5856

摘要

Emerging scientific evidence suggests that the supplementation of probiotics may help to reduce/manage blood cholesterol levels in humans. We evaluated the in vitro cholesterol-lowering activity of the probiotic strain Bacillus coagulansMTCC 5856. This probiotic de-conjugated bile salts and liberated deoxycholic acid, confirming its bile salt hydrolase activity. Furthermore, B. coagulansMTCC 5856 also significantly (P 0.05) reduced cholesterol levels in culture media under growing (48.42%), resting (live but suspended in buffer, 36.47%) and even heat-killed (dead, 8.5%) conditions. Bacillus coagulansMTCC 5856 significantly reduced the cholesterol levels in cholesterol-rich foods, such as egg yolk (39.79%), chicken liver (45.44%) and butter (49.51%), when incubated for 24 h in conditions mimicking the in vivo environment. Bacillus coagulansMTCC 5856 also produced significant (P 0.05) amounts of propionic acid and butyric acid while fermenting cholesterol-rich foods. The multitudinous ways by which B. coagulansMTCC 5856 reduces cholesterol levels endorses its application in functional food formulations and as a dietary ingredient for the management of hypercholesterolemia, potentially reducing the incidence of coronary heart disease and other related disabilities.