BIOL345 Lecture Notes - Lecture 1: Miasma Theory, Quorum Sensing, Clostridium
15 Sep 2017
School
Department
Course
Professor
Document Summary
Fire and ice was used to preserve food. Canning: use high temperature for short periods of time. Appertization: food in a can and boil for hours, put cork in it to separate from atmosphere. Food-producing era: more centralized, systematic opportunity for disputes, laying of blame, laws, regulations, litigations. Foodborne disease: recognition of food as source of disease pre-dates recognition of microorganisms, thought to be transmitted by miasmas (low lying cloud of contagion) Greeks/romans: recognized ergots (fungus: claviceps purpurea) poisoning of grains. 1793 germany: botulism outbreak due to blood sausages. Clostridium botulinum: endospores can grow in these conditions. Quorum sensing: biofilms, no hard evidence that it affects food.
