what biological organism cause fermentation
When an energy substrate is available, often a simple carbohydrate, and often under anaerobic (lack of oxygen) conditions, fermentation will proceed. Many microorganisms use fermentation as an energy producing pathway. These may include molds, fungi, and bacteria. No, food can not ferment on its own. Fermentation is always a biological process. We often think of food spoilage or fermentation as being spontaneous. But this is due to the fact that we can not see the very small (micro) organisms doing the activity.