"Free glutamates" refers to a type of naturally occurring compounds found in food that adds a savory or umami taste. These compounds enhance the flavor of food, making it more delicious. Full definition
The theory is that excess free glutamate found in long cooked broths may cross the blood brain barrier (for those with «leaky brain») and may be harmful for these particular folks. (marksdailyapple.com)
Eating foods containing MSG or a lot of added free glutamate, can overwhelm the system, so to speak. (nourishingtraditions.com)
Another difference: most of the glutamate in our body does not come from free glutamate in our food but from the breakdown of protein into its separate amino acids. (nourishingtraditions.com)