IQF Technology: The Power Behind Quality Frozen Ingredients

What is IQF in food processing? IQF, or Individual Quick Freezing, is a revolutionary food preservation method that dates back to the 1930s. It was pioneered by Clarence Birdseye in the United States. His breakthrough fundamentally changed the landscape of frozen foods and laid the foundation for the modern cold chain industry. In the second half of the 20th century, IQF technology continued to evolve alongside advancements in freezing equipment and logistics systems, and it soon gained widespread use around the world.

The process rapidly lowers the temperature of individual pieces of fruits, vegetables, meat, and more to below -18°C. This high-speed process prevents large ice crystals from forming and damaging the food’s cell walls. As a result, IQF products retain their original color, shape, and flavor even after months in storage. Each piece is frozen separately and evenly, making it easy to handle, portion, and use in later stages of food processing or cooking.

IQF is often compared to BQF, or Block Quick Freezing. BQF involves freezing a mass of ingredients together into a solid block. While effective for some applications, BQF can result in quality loss during thawing and is far less flexible for downstream use. For ingredients that need to maintain individual shape and consistency—such as diced mushrooms, garlic granules, peas, or corn kernels—IQF is the superior choice.

It’s important to note that IQF is much more than just “freezing fast.” The quality of the final product depends on many upstream and downstream variables, including the timing of harvest, cleanliness of raw materials, peeling and cutting precision, and handling procedures. On the production line, factors like freezing speed, air circulation, temperature control, and hygienic packaging play a vital role in determining whether a batch meets quality standards. That’s why a trustworthy IQF ingredient supplier must not only have advanced technology and processing capabilities but also robust agricultural bases and a rigorous quality management system.

ShunDi is a leading supplier of dehydrated and IQF fruits, vegetables and spices. With modern facilities in Zhejiang, Shanghai, and Shandong, as well as large-scale farming bases in key growing regions like Yunnan and Shandong, we provide a fully traceable supply chain—from field to factory. Our IQF production lines are equipped with advanced imported freezing systems and hygienic packaging environments. We also operate an in-house laboratory to rigorously test for microbiological, heavy metal, pesticide residue, and other food safety parameters.

We mainly offer IQF strawberries, blueberries, sweet corn, green peas, red and green bell peppers, minced garlic, and chopped onions. All products meet international food safety standards and are certified by BRC, Kosher, and Halal systems. Our products are trusted by food manufacturers and distributors across Europe, the United States, Japan, South Korea, Southeast Asia, and beyond.

As global demand grows for ready meals and quick-service foods, IQF ingredients are playing an increasingly vital role. We look forward to partnering with more food brands worldwide.