Abstract: This application relates to the modulation of the flora of bacteria in an environment by inhibiting the quorum sensing of a specific bacteria in said environment by administering an effective amount of a quorum sensing control composition comprising at least one quorum sensing control agent, which is an adsorbent/catalytic inhibitor for a QS signal molecule, such as, N-acyl homoserine lactones (AHL), pseudomonas quinolone signal (PQS), and autoinducer-1 (AI-1), autoinducer-2 (AI-2) type of quorum sensing molecules. Quorum sensing control agents include a sorbent material, sorbent mineral or non-porous mineral such as, for example, phyllosilicate clays, silica, calcite, zeolites, diatomaceous earth, smectite, activated carbon, a nanoparticle or a combination of any of the foregoing. Methods include inhibiting the spoilage of food stuffs and preventing vibriosis in fish or shell fish.

Abstract: Applicants have examined two Clostridium species, Clostridium difficile and Clostridium perfringens, and found that clays can adsorb the toxin produced by both and that a clay blended product can decrease the effects of a prominent in chickens and known as Necrotic Enteritis, that is caused by C. perfringens. Recently a clay or a clay blend that may be a combination of clay, yeast, and a form of a functional amino acid, was examined and found to help decrease the effects of acute hepatopancreatic necrosis disease (AHPND), which is also known as Early Mortality Syndrome (EMS) in shrimp when a challenge model that included Vibrio parahaemolyticus was used.