Comparison of Carotenoid Composition in Immature and Mature Grains of Corn (Zea Mays L.) Varieties |
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Authors: | Jiangfeng Song Dajing Li Meijuan He Jieqiong Chen Chunquan Liu |
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Affiliation: | 1. Institute of Farm Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, China;2. College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China;3. National Research and Development Center for Vegetable Processing, Nanjing, China |
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Abstract: | The objective of this study was to compare the carotenoid composition of sweet and waxy corn grains at the stage of milk and dough by reversed-phase high-performance liquid chromatography, using a C(30) column, connected to diode array detector and mass spectrometry. In the reverse phase 21 carotenoids were found, the major identified carotenoids were all-trans-lutein, all-trans-zeaxanthin, and all-trans-α- cryptoxanthin. Waxy corn grains showed significantly lower contents for total carotenoids ranging from 1.52 to 3.68 μg/g dry weight in three varieties, whereas sweet corn grains had higher carotenoid contents from 8.42 to 39.71 μg/g dry weight. The composition of the carotenoid pattern was somewhat different compared to literature data; this could be the results of genetic or environmental differences. Taking into account the usage of all-trans lutein and all-trans-zeaxanthin for the prevention of several pathologies, especially the age related macular degeneration, the immature sweet corn (e.g., “Jingtian 5” and “Jingtian 3”) might be interesting sources of a lutein and/or zeaxanthin extract that could add value to an underutilized biomass. |
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Keywords: | Carotenoids HPLC-DAD-MS/MS Corn Discrepancy |
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