Could be derived from animal fat.
Mono- and Diglycerides are commonly added to commercial food products in small quantities. They act as emulsifiers, helping to mix ingredients such as oil and water that would not otherwise blend well.
The commercial source may be either animal (cow- or hog-derived) or vegetable, and they may be synthetically made as well. They are often found in bakery products, beverages, cake mixes, candies, chewing gum, confections, foods, ice cream, margarine, shortening and whipped toppings. They are also found in some cosmetics.