- a. oxidase a copper-containing enzyme that catalyzes the oxidation of l-ascorbic acid with O2 to l-dehydroascorbic acid. Some forms of a. oxidase use NADP+ as well. Used as an antitumor enzyme. SYN: ascorbase.
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ascor·bate ə-'skȯr-.bāt, -bət n a salt of ascorbic acid
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ascor·bate (ə-skorґbāt) a compound or derivative of ascorbic acid.Medical dictionary. 2011.