Definition of lactase in English:

lactase

noun ˈlakteɪzˈlækteɪs

mass nounBiochemistry

An enzyme which catalyses the hydrolysis of lactose to glucose and galactose.
〔生化〕乳糖酶
Example sentencesExamples
- While most people can digest lactose with no difficulty, some have trouble because they do not produce the enzyme lactase, which splits lactose into digestible parts.
- The enzyme lactase breaks down the lactose to galactose and glucose.
- Lactose, the sugar present in milk, is split in the small intestine by the enzyme lactase into its constituent glucose and galactose molecules, allowing absorption of the glucose.
- Many people take extra doses of naturally produced enzymes, such as lactase, pepsin and trypsin, in supplement form.
- The role of lactase is to hydrolyze lactose into galactose.

Origin

Late 19th century: from lactose + -ase.

Definition of lactase in US English:

lactase

nounˈlaktāsˈlækteɪs

Biochemistry

An enzyme that catalyzes the hydrolysis of lactose to glucose and galactose.
〔生化〕乳糖酶
Example sentencesExamples
- Lactose, the sugar present in milk, is split in the small intestine by the enzyme lactase into its constituent glucose and galactose molecules, allowing absorption of the glucose.
- While most people can digest lactose with no difficulty, some have trouble because they do not produce the enzyme lactase, which splits lactose into digestible parts.
- The enzyme lactase breaks down the lactose to galactose and glucose.
- The role of lactase is to hydrolyze lactose into galactose.
- Many people take extra doses of naturally produced enzymes, such as lactase, pepsin and trypsin, in supplement form.

Origin

Late 19th century: from lactose + -ase.

词汇	lactase
释义	Definition of lactase in English: lactase noun ˈlakteɪzˈlækteɪs mass nounBiochemistry An enzyme which catalyses the hydrolysis of lactose to glucose and galactose. 〔生化〕乳糖酶 Example sentencesExamples While most people can digest lactose with no difficulty, some have trouble because they do not produce the enzyme lactase, which splits lactose into digestible parts. The enzyme lactase breaks down the lactose to galactose and glucose. Lactose, the sugar present in milk, is split in the small intestine by the enzyme lactase into its constituent glucose and galactose molecules, allowing absorption of the glucose. Many people take extra doses of naturally produced enzymes, such as lactase, pepsin and trypsin, in supplement form. The role of lactase is to hydrolyze lactose into galactose. Origin Late 19th century: from lactose + -ase. Definition of lactase in US English: lactase nounˈlaktāsˈlækteɪs Biochemistry An enzyme that catalyzes the hydrolysis of lactose to glucose and galactose. 〔生化〕乳糖酶 Example sentencesExamples Lactose, the sugar present in milk, is split in the small intestine by the enzyme lactase into its constituent glucose and galactose molecules, allowing absorption of the glucose. While most people can digest lactose with no difficulty, some have trouble because they do not produce the enzyme lactase, which splits lactose into digestible parts. The enzyme lactase breaks down the lactose to galactose and glucose. The role of lactase is to hydrolyze lactose into galactose. Many people take extra doses of naturally produced enzymes, such as lactase, pepsin and trypsin, in supplement form. Origin Late 19th century: from lactose + -ase.
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