Antibiotics, a term we often hear, actually refer to a class of substances that can kill or inhibit the growth of bacteria. They play a crucial role in the medical field and are effective in treating many bacterial diseases. However, do you know how antibiotics are extracted from natural products? The answer is: using ion exchange resins. Ion exchange resins can adsorb and release specific ions, so they play a key role in recovering antibiotics from natural products and fermentation broth.