Filling: Mechanically Separated Chicken

Mechanically separated chicken (MSC) is a paste-like, processed poultry product made from chicken carcasses after the prime cuts have been removed. Bones, skin, and connective tissues are put through a process that separates the edible meat from the bone fragments. The resulting product is often finely ground and has a different texture and color than hand-deboned chicken meat.

MSC is used as a cost-effective ingredient in processed foods like hot dogs, chicken nuggets, and certain fillings for sandwiches and wraps. Its fine texture and binding properties make it suitable for creating uniform products. It is often used to increase the protein content of processed foods at a lower cost.

Mechanically separated chicken is permitted for use in the United States by the FDA. The FDA considers MSC to be chicken meat. Some consumer groups have raised concerns about its processing method and potential for higher levels of calcium due to bone fragments, but regulatory bodies have not found it to be unsafe for consumption. JECFA has evaluated various meat products but has not specifically set limits for MSC.