Soy Leghemoglobin

Soy leghemoglobin is a protein found naturally in the root nodules of soybean plants. It is produced through a fermentation process using genetically engineered yeast. This process allows for the large-scale production of the protein, which gives plant-based meats a characteristic meaty flavor and color.

Manufacturers add soy leghemoglobin to plant-based meat alternatives to mimic the taste, texture, and appearance of animal meat. It is particularly used in products like burgers, sausages, and other meat substitutes to provide a more authentic 'meaty' experience for consumers.

Soy leghemoglobin has been evaluated by the U.S. Food and Drug Administration (FDA) and is generally recognized as safe (GRAS) for use in food. The FDA's assessment considered the protein's history of safe consumption and the production process. International bodies like JECFA have also evaluated it. While generally considered safe at typical consumption levels, some public discussion has occurred regarding the use of genetically engineered ingredients.