FCE & SID — Acidified & Low-Acid Canned Foods

All commercial acidified and low-acid canned food (LACF) processors located in the United States, along with all foreign processors who manufacture these products for export to the United States, must register with the US Food and Drug Administration. Acidified food processors must comply with 21 CFR Part 114, while low-acid canned food processors must comply with 21 CFR Part 113. Both types of processors are subject to the emergency permit control provisions of 21 CFR Part 108, which establishes registration and process filing requirements.

In addition to facility registration, processing plants must submit detailed process filing forms (FDA Form 2541 series) containing scheduled process information for each acidified and low-acid canned food product manufactured. These filings document the specific time, temperature, pH, water activity, and container parameters validated by a qualified process authority to ensure commercial sterility and product safety. Processors must also comply with all other applicable requirements of the Federal Food, Drug, and Cosmetic Act, the Fair Packaging and Labeling Act, current Good Manufacturing Practice regulations under 21 CFR Part 110, and the Food Safety Modernization Act provisions relevant to thermally processed foods.

Importantly, the FDA acidified food and LACF registration requirements apply specifically to processors who manufacture these products. Importers, wholesalers, distributors, brokers, and other entities in the distribution chain who do not perform actual processing activities are excluded from the registration requirement. However, these supply chain participants may still be subject to other FDA regulations such as standard food facility registration under the Bioterrorism Act.

What is an Acidified Food?

An acidified food is defined by FDA as a low-acid food to which acid(s) or acid food(s) are deliberately added for the specific purpose of reducing the pH to a finished equilibrium pH of 4.6 or below. These products have a water activity greater than 0.85 and are formulated, processed, packaged, and stored to remain shelf-stable under non-refrigerated distribution conditions. Common examples of acidified foods include pickled vegetables, pickled eggs, certain salsas, marinated artichokes, pickled peppers, and various acidified sauces and condiments. The acidification process is critical because the lower pH environment inhibits the growth of pathogenic microorganisms, particularly Clostridium botulinum spores that could otherwise produce deadly toxins in sealed containers.

What is a Low-Acid Canned Food?

A low-acid canned food (LACF) is defined by FDA regulations as any food product that meets all of the following four characteristics:

1. pH and Water Activity: The product has an equilibrium pH value greater than 4.6 and a water activity greater than 0.85, creating an environment where dangerous microorganisms could potentially grow without proper processing.
2. Hermetic Container: The product is sealed in a hermetic (air-tight) container that prevents the entry of microorganisms, gases, or moisture after processing. This includes metal cans, glass jars, retort pouches, and other sealed packaging systems validated to maintain commercial sterility.
3. Heat Treatment for Commercial Sterility: The product receives a scientifically validated heat treatment specifically designed to achieve commercial sterility, eliminating all microorganisms capable of growing under normal storage conditions. This thermal processing must be conducted according to a scheduled process established by a qualified process authority.
4. Non-Refrigerated Storage and Distribution: The product is normally stored, distributed, and sold under non-refrigerated (ambient temperature) conditions, requiring the commercial sterility achieved through proper thermal processing to ensure long-term safety and shelf stability.

Common examples of low-acid canned foods include canned vegetables (green beans, corn, peas), canned meats and poultry, canned fish and seafood, canned soups and broths, canned milk products, canned pasta dishes, and various ready-to-eat meal products. Because these foods have higher pH levels that could support the growth of Clostridium botulinum and other dangerous pathogens, they require precise thermal processing under strictly controlled conditions to ensure consumer safety.

Why FDA Acidified and LACF Registration Matters

Failure to properly register your acidified food or LACF processing facility with FDA can result in serious regulatory consequences, including import refusal at US ports of entry for foreign processors, product detention and destruction, FDA warning letters, mandatory recalls, civil penalties, and in cases involving public health hazards, criminal prosecution. Beyond regulatory compliance, proper registration and process filing demonstrate your commitment to food safety, building consumer trust and protecting your brand reputation in the competitive US market.

Liberty Management Group provides comprehensive registration support for acidified food and low-acid canned food processors, including FDA Form 2541 submissions, process authority coordination, and ongoing regulatory compliance management to ensure your facility meets all federal requirements for safe and lawful US market access.