Changes in antioxidant capacity and colour associated with the formation of β-carotene epoxides and oxidative cleavage derivatives.

Abstract:

:In this study HPLC-DAD-MS/MS was applied for the identification of compounds derived from (all-E)-β-carotene following epoxidation and oxidative cleavage. The consequences on the CIELAB colour parameters and antioxidant capacity (AC) were also evaluated. Five apocarotenoids, three secocarotenoids, seven Z isomers and two epoxides were detected as a result of the oxidative cleavage. Four epoxides and three Z isomers were detected as a consequence of the epoxidation reaction. Some compounds were detected for the first time as a result of oxidation reactions. Both treatments led to a marked decrease in b(∗) and Cab(∗) values, indicating that these colour parameters can be used for the rapid assessment of β-carotene oxidation. The oxidative cleavage of β-carotene resulted in increased capacity to both scavenge ABTS(+) and quench singlet oxygen. These results suggest that the study of the AC of these oxidative derivatives and their possible usefulness as food ingredients deserves further attention.

journal_name

Food Chem

journal_title

Food chemistry

authors

Gurak PD,Mercadante AZ,González-Miret ML,Heredia FJ,Meléndez-Martínez AJ

doi

10.1016/j.foodchem.2013.09.106

subject

Has Abstract

pub_date

2014-03-15 00:00:00

pages

160-9

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(13)01371-X

journal_volume

147

pub_type

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