Abstract
1. 1. Standard hydrolysis of carotenoid esters typically provides complicated mixtures of reaction products. A facile method was developed for the specific hydrolysis of carotenoid esters using a cholesterol esterase. This method gives high yields of the desired unesterified products. 2. 2. The utility of this method in the characterization of carotenoid esters was assessed by comparing catalytic activity of this enzyme with the following substrates: esters of astaxanthin, 2′-norastaxanthin, and 2,2′-bisnorastaxanthin, as well as fucoxanthin.
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