Calcium propionate is the calcium salt of propionic acid, serving as a common food preservative. Its primary function is to inhibit the growth of mold and some bacteria in various food products. This white crystalline powder is particularly effective in neutral-pH baked goods, such as bread, cakes, and other flour-based items, where it helps to extend shelf life by preventing spoilage. Generally recognized as safe (GRAS) by regulatory bodies like the FDA, it is widely used in the food industry. Compared to sodium propionate, calcium propionate offers the added benefit of providing a source of calcium, a vital nutrient. Its use helps reduce food waste by maintaining product freshness for longer periods.