FDA food-grade certification typically refers to the certification or approval by the U.S. Food and Drug Administration (FDA) for food-related products. This certification generally includes two types:

1.Food Additive Approval: FDA's certification of food additives involves the FDA approving a substance for use in food processing to improve the quality, freshness, taste, or other characteristics of food. These food additives may include preservatives, sweeteners, colorants, thickeners, etc. Once FDA approval is obtained, these additives can be legally used in food processing.

2.Food Contact Material Certification: FDA's certification of food contact materials refers to the FDA approving a material for use in the manufacture or processing of food or potable water. These materials may include food packaging, containers, manufacturing equipment, etc., used to protect food from contamination or pollution. FDA-certified food contact materials typically comply with FDA regulations, ensuring that they do not pose a hazard to food safety.

In summary, FDA food-grade certification refers to the FDA's certification or approval of food-related products or materials to ensure compliance with FDA standards and requirements, thereby safeguarding the safety and quality of food.