The disclosure relates generally to bacterial strains of the genus Butyricimonas, e.g., Butyricimonas faecihominis bacterial strains, and compositions, e.g., pharmaceutical compositions, comprising such strains. The disclosure further relates to methods of using such strains and compositions for preventing or treating a disorder, e.g., a cancer, when administered to a subject in need thereof.

The invention relates to preparation of fermented food products, including dairy or dairy analogue products, with Pichia kluyveri and lactic acid bacteria in the presence of carbohydrate(s) which is sucrose, fructose, glucose or mixtures thereof. Fermentation of such products can be made using a starter culture composition comprising Pichia kluyveri strain(s) and lactic acid bacteria strain(s). The composition optionally comprises carbohydrate(s) which is sucrose, fructose and/or glucose.