Assertion: carotenoid's activity | /r/HasProperty | assayed
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Source sentences:
text: Levels of lutein, zeaxanthin, β-cryptoxanthin and β-carotene in hexane extracts were determined using HPLC, and antioxidant activity was assayed using the TEAC system based on the 2,2′-azinobis(3-ethylbenzothiazoline-6-sulphonic acid) radical cation (ABTS +), and the TBARS system based on a linoleic acid emulsion.