ty·​ros·​i·​nase | \ tə-ˈrä-sə-ˌnās How to pronounce tyrosinase (audio) , tī-, -ˌnāz \

Definition of tyrosinase

: a copper-containing enzyme that promotes the oxidation of phenols (such as tyrosine) and is widespread in plants and animals

Examples of tyrosinase in a Sentence

Recent Examples on the Web And compounds extracted from brown algae have been shown to inhibit tyrosinase in animal studies. Sarah Jacoby, SELF, "Can Spirulina and Other Algae Skin-Care Products Live Up to the Hype?," 13 Aug. 2019 There’s also some evidence to suggest that some types of algae can be used to manage hyperpigmentation through a particular mechanism: One major step in the body’s production of melanin depends on tyrosinase, an enzyme. Sarah Jacoby, SELF, "Can Spirulina and Other Algae Skin-Care Products Live Up to the Hype?," 13 Aug. 2019 Arbutin works by directly inhibiting the activity of tyrosinase enzymes central to the production of melanin. Allure, "The Skin-Care Glossary: A Comprehensive Guide to Everything You Need to Know," 17 Aug. 2018 Ingredients such as kojic acid (in the Bliss serum, right) and mulberry (found in Olay's overnight mask, here) are called tyrosinase inhibitors. Krista Bennett Demaio, Cosmopolitan, "9 Beauty Fails That Mess With Your Skin (and How to Fix Them)," 2 Jan. 2015 On a biological level, hydroquinone works by inhibiting an enzyme called tyrosinase, which aids in the production of melanin, explains Cook-Bolden. Janell M. Hickman, SELF, "8 Dark Spot Treatments That Really Work, According to Dermatologists," 27 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tyrosinase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of tyrosinase

1896, in the meaning defined above

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The first known use of tyrosinase was in 1896

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Cite this Entry

“Tyrosinase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tyrosinase. Accessed 22 Oct. 2020.

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More Definitions for tyrosinase


ty·​ros·​i·​nase | \ tə-ˈräs-ə-ˌnās, tī-, -ˌnāz How to pronounce tyrosinase (audio) \

Medical Definition of tyrosinase

: an enzyme that promotes the oxidation of phenols (as tyrosine) and is widespread in plants and animals

More from Merriam-Webster on tyrosinase

Britannica.com: Encyclopedia article about tyrosinase

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