IQF stands for “Individually Quick Frozen”, which in German means “einzeln schnell gefroren”. This method is used in the food industry to freeze products quickly and efficiently without them clumping together. The IQF process originated in Canada. The inspiration came from a biologist who made a remarkable discovery while ice fishing in extreme sub-zero temperatures. When he pulled the caught fish out of the water and placed them directly in the snow, they froze instantly.
What is IQF?
IQF is a freezing process where food products are individually and very quickly brought to low temperatures. Unlike conventional freezing methods, where larger ice formations can occur, the individual pieces remain separate in IQF. This is achieved through the use of a special airflow or by immersion in liquid nitrogen.
Advantages of IQF
IQF offers a range of benefits that make it a preferred method in food processing:
- Preservation of quality: The cell structure of the food remains largely intact, resulting in better texture and freshness after thawing.
- No clumping: The individual pieces remain separated, allowing for easy portioning.
- Rapid freezing: Due to the short freezing time, nutrients, flavor, and color are better preserved.
- Hygiene and safety: The rapid freezing reduces the growth of microorganisms and extends shelf life.
IQF Drop in Food Production
A special application of IQF is the IQF Drop, which is particularly used in industrial food production. In this process, liquid or semi-solid foods such as purees, sauces, or doughs are frozen in small drops or portions.
This method has the following advantages:
- Easy dosing – As the drops are frozen individually, they can be easily portioned without having to thaw an entire product.
- Longer shelf life – The rapid freezing preserves the quality of the ingredients and slows down spoilage.
- Nutrient and flavor preservation – Compared to conventional freezing methods, vitamins, flavors, and consistency are better preserved.
- Versatile applications – IQF drops can be used in foods (e.g., sauces, fruit juices, soups, yogurt) and in the pharmaceutical industry (e.g., dietary supplements, medications).
- Quick thawing – Due to their small size, the drops thaw faster than larger frozen products, reducing preparation time.
- Avoidance of additives – The rapid freezing often eliminates the need for preservatives.
- Reduction of food waste – As only the required amount is taken, less food is wasted.
- Optimized logistics – IQF drops are space-saving and easy to transport and store.
