Mono- and diglyceride fatty acid esters are emulsifiers, mainly produced from hydrogenated oils as well as glycerol and other raw materials, and are mainly found in cookies, pastries, and bread, which can increase the taste of food, but can easily lead to an increase in the body fat content, leading to obesity. 1. Monoglycerol fatty acid ester: This is a non-ionic surfactant with good surface activity, which can be used as an emulsifier to increase the taste of food. 2. Diglyceride fatty acid ester: It contains a free hydroxyl group as well as a hydroxyl product resulting from esterification by fatty acids and is not easily soluble in water. Frequent consumption may lead to an increase in body fat content. In your daily diet, you should try to eat less or no food containing mono- and diglyceride fatty acid esters, eat more fresh vegetables and fruits, and if necessary, consult your doctor for an individualized diet plan.