Lactases are enzymes that break down lactose, the sugar found in milk. The word "lactases" is spelled with a long "a" sound for the first syllable, followed by a short "a" sound in the second syllable, and ending with a "z" sound. In IPA phonetic transcription, it is spelled /ˈlæk.tə.sɪz/. The double "s" at the end indicates the plural form of the word, as there are usually multiple lactase enzymes present in living organisms that utilize them.
Lactases are enzymes that are responsible for the breakdown of lactose, a sugar found in milk and dairy products. These enzymes are produced in the small intestine, particularly in the lining of the small intestine known as the brush border.
Lactose is a disaccharide, composed of two sugar molecules, glucose and galactose. In order to be absorbed and utilized by the body, lactose must first be broken down into its individual sugar components. This is where lactases come into play.
Lactases catalyze the hydrolysis of lactose, breaking the bond between glucose and galactose, ultimately yielding these two separate sugars. After being broken down by lactases, glucose and galactose can be easily absorbed by the lining of the small intestine and enter the bloodstream, where they can be utilized for energy production.
People who have a deficiency in lactases, a condition known as lactose intolerance, are unable to properly break down lactose. As a result, when lactose is consumed, it remains undigested in the small intestine, leading to symptoms such as abdominal pain, bloating, gas, and diarrhea.
In summary, lactases are enzymes responsible for the digestion of lactose, a sugar found in milk. These enzymes break down lactose into glucose and galactose, which can be absorbed and utilized by the body. Lactase deficiency can result in lactose intolerance, causing gastrointestinal symptoms when dairy products are consumed.
The word "Lactases" is derived from "lactase", which originates from the Latin term "lac" meaning "milk" and the suffix "-ase" denoting an enzyme. Lactase is an enzyme that breaks down lactose, the sugar found in milk, into its component sugars, glucose and galactose. Therefore, "lactases" refers to multiple lactase enzymes.