List Of Foods High In Lactic Acid

Lactic acid is a naturally occurring compound present in milk. Upon consumption, the acid breaks down into lactose, which requires the digestive enzyme lactase. Some people lack this enzyme resulting in a lactose intolerance often causing digestive discomfort, according to the National Digestive Diseases Information Clearinghouse. There are several foods that contain lactic acid.

Cheese

Many cheese varieties contain high levels of lactic acid, which is not just cow-based. Goat's milk, for example, also contains this milk sugar, according to Bruce Axler in the book "The Cheese Handbook." The lactic acid contributes to the characteristic flavor of the cheese, such as sharp and puckery taste. Cheddar, formaggini, pasteurized processed cheese, swiss cheese and many other cheeses have lactic acid.

Yogurt

Dairy-based yogurt has an ample amount of lactic acid. In fact, live and active bacterial cultures are often added to yogurt after pasteurization thereby increasing the lactic acid. This is due to the lactobacilli bacterial strain, according to Ramesh Chandan in the book "Manufacturing Yogurt and Fermented Milks." These probiotic strains are beneficial as they aid in digestion and nutrient absorption. They can even help those who are lactose intolerant, Chandan notes.

Sourdough Bread

Sourdough bread production creates lactic acid due to the yeast, according to the book "The Microbiological Safety and Quality of Food" by Barbara Lund et al. Making this bread variety begins with a lactobacillus culture mixed with yeast and flour. The distinct sour flavor in this bread is due to the high level of lactic acid.