"Esther" Natural Recordings by Native Speakers
Esther is a proper noun, specifically a name. It is a biblical name, originating from the Book of Esther, where Esther is the main character and the queen of Persia. The name Esther means "star" in Hebrew and has become a popular given name in many cultures, signifying hope, guidance, and illumination.
Example Sentences Using "Esther"
Esterase is an enzyme that catalyzes the hydrolysis of esters, which are molecules consisting of an acid and an alcohol. In other words, esterase breaks down esters into their constituent parts, usually an acid and an alcohol. Esterase is found in various tissues and organisms and plays a role in various biochemical processes, such as digestion, metabolism, and communication. In medical settings, esterase is used as a diagnostic tool to detect certain diseases and to monitor the effects of chemicals and drugs.
Esters are a class of compounds that are formed by the reaction of an acid with an alcohol. They have a general formula of RCOOR', where R' is an alcohol and RCOO is the acid. Esters are commonly found in nature and are also used in the production of fragrances, food and beverages, and pharmaceuticals. Examples of esters include ethyl acetate,叔butyl acetate, andIsoamyl acetate. Esters have a characteristic sweet and fruity smell, and are often used as flavorings and fragrances in food, cosmetics and perfumes. Esters can also be used as plasticizers, coatings, and cleaning products.