Tennis elbow symptoms usually begin gradually. The main symptom is pain, which may begin with a dull aching or soreness on the outer part of the elbow that goes away within 24 hours after an activity. As time goes on, it may take longer for the pain to go away.
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.
Figure 7-23Fermentation in yeast produces ethyl alcohol. The carbon dioxide that isreleased during fermentation creates bubbles and pockets that make breadrise. The alcohol evaporates during baking. There are also fungi and bacteria that produce lactic acid duringfermentation, just as your muscle cells do.Humans use these microbes totransform milk into cheese and yogurt.hen yeast cells are kept in ananaerobic environmentâan environment without oxygenâthey areforced to ferment sugar and other foods. In contrast to fermentation inyour muscle cells, fermentation in yeast produces alcohol, instead oflactic acid, as a waste product (Figure 7-23).