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Open AccessArticle

Influence of Oxygen-Containing Sulfur Flavor Molecules on the Stability of β-Carotene under UVA Irradiation

1
School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
2
Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Lillian Barros
Molecules 2019, 24(2), 318; https://doi.org/10.3390/molecules24020318
Received: 28 December 2018 / Revised: 13 January 2019 / Accepted: 13 January 2019 / Published: 16 January 2019
(This article belongs to the Special Issue Natural Additives in Food)
The influence of 11 kinds of oxygen-containing sulfur flavor molecules was examined on β-carotene stability under UVA irradiation in ethanol system. Both the effects of sulfides on dynamic degradation of β-carotene and the relation between structure and effect were investigated. The oxidation products of β-carotene accelerated by sulfides under UVA irradiation were also identified. The results indicated that the disulfides had more obvious accelerative effects on the photodegradation of β-carotene than mono sulfides. The degradation of β-carotene after methyl (2-methyl-3-furyl) disulfide (MMFDS), methyl furfuryl disulfide (MFDS) and bis(2-methyl-3-furyl) disulfide (BMFDS) exposure followed first-order kinetics. Furan-containing sulfides such as MMFDS and BMFDS showed more pronounced accelerative effects than their corresponding isomers. The oxidation products were identified as 13-cis-β-carotene, 9,13-di-cis-β-carotene and all-trans-5,6-epoxy-β-carotene. These results suggest that both the sulfur atom numbers and the furan group in oxygen-containing sulfides play a critical role in the photooxidation of β-carotene. View Full-Text
Keywords: oxygen-containing sulfur flavor molecules; β-carotene; bis(2-methyl-3-furyl) disulfide (BMFDS); oxidation products oxygen-containing sulfur flavor molecules; β-carotene; bis(2-methyl-3-furyl) disulfide (BMFDS); oxidation products
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Zhang, G.-L.; Wu, H.-Y.; Liang, Y.; Song, J.; Gan, W.-Q.; Hou, H.-M. Influence of Oxygen-Containing Sulfur Flavor Molecules on the Stability of β-Carotene under UVA Irradiation. Molecules 2019, 24, 318.

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