The primary method for removing lactose from cow's milk involves adding the enzyme lactase, also known as beta-galactosidase. This enzyme breaks down lactose, the sugar responsible for lactose intolerance, into its simpler components: glucose and galactose. These simpler sugars are much easier for individuals with lactose intolerance to digest.
The Lactase Process: A Step-by-Step Breakdown
- Enzyme Addition: Lactase is added to the milk.
- Lactose Hydrolysis: The lactase enzyme catalyzes the breakdown of lactose into glucose and galactose.
- Lactose Removal (Optional): In some commercial processes, further steps might be taken to remove the remaining trace amounts of lactose. However, the primary method focuses on enzymatic breakdown.
Multiple sources confirm this process: Arla, Healthline, ThoughtCo, Leading Edge Only, The Dairy Alliance, and WikiHow all describe the use of lactase as the core method.
Other Methods: Ultrafiltration
While lactase addition is the most common method, other techniques exist, such as ultrafiltration (UF). This method physically removes lactose molecules from the milk. Donaldson mentions UF as another common industrial approach.
Important Note: Removing dairy from your diet will not reduce the lactose content of breast milk. Australian Breastfeeding Association clarifies this point.
