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lactic acid
This term is used in both industrial food science and human physiology, though the connotations differ. In a culinary or chemical context, it is viewed as a beneficial agent for preservation and flavor development in fermented foods like sauerkraut or kefir.
In a biological or athletic context, it is frequently associated with the "burn" felt during anaerobic exercise. While often blamed for muscle soreness, modern sports science clarifies that it is a byproduct of energy metabolism rather than the sole cause of delayed onset muscle soreness.
Meanings
An organic acid produced by the fermentation of sugars by certain bacteria, used extensively in food preservation and the production of yogurt and cheese.
Examples
My legs are burning because of the lactic acid.
Lactic acid bacteria are essential for making traditional sourdough bread.
I can feel the lactic acid building up in my quads during this final set.
The sour taste of kimchi comes from the production of lactic acid.
Does stretching actually help clear lactic acid from the muscles?
The lab technician measured the concentration of lactic acid in the sample.
Too much lactic acid in the muscle tissue leads to that heavy feeling.
Certain probiotics contain lactic acid bacteria to improve gut health.