Sorbic acid is a food preservative commonly used to extend the shelf life of food products. It is a six-letter word, and is also known as 2, 4-hexadienoic acid. Sorbic acid is a naturally occurring fatty acid found in some fruits and vegetables, and is used as an antimicrobial agent to prevent the growth of mold, yeast, and fungi. It is also used to inhibit the growth of bacteria, which can cause food spoilage.