Sun Xiaohong, Ma Lei, Lux Peter E, Wang Xuan, Stuetz Wolfgang, Frank Jan, Liang Jianfen
Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
Department of Food Biofunctionality, Institute of Nutritional Sciences, University of Hohenheim, Garbenstrasse 28, 70599 Stuttgart, Germany.
Food Chem. 2022 Jan 15;367:130725. doi: 10.1016/j.foodchem.2021.130725. Epub 2021 Jul 29.
Grains of three specialty maize varieties and one conventional maize variety cultivated in China were collected and dissected to obtain the germ, endosperm, and pericarp fraction, and the distribution pattern of phosphorus, carotenoids, and tocochromanols was determined. The results showed that phytochemical contents varied significantly among different maize fractions. The germ fraction accounted for 78.3 to 86.5% of the total phosphorus present in the maize kernels. Over 86.9% of carotenoids were located in the endosperm. Except for waxy maize, 64.5 to 74.8% of the tocochromanols were contributed by the germ. Considerable differences in phytochemical contents were observed between the genotypes. Waxy maize contained the highest content of tocopherols, tocotrienols and tocochromanols meanwhile waxy maize had the lowest carotenoid and phytate phosphorus content. High lysine maize contained the highest levels in carotenoids and lowest tocochromanols. Over all, total carotenoids were significantly inversely associated with total tocochromanols.
收集并解剖了在中国种植的三个特种玉米品种和一个常规玉米品种的谷粒，以获得胚芽、胚乳和果皮部分，并测定了磷、类胡萝卜素和生育三烯酚的分布模式。结果表明，不同玉米部分的植物化学物质含量差异显著。胚芽部分占玉米粒中总磷的78.3%至86.5%。超过86.9%的类胡萝卜素位于胚乳中。除糯玉米外，64.5%至74.8%的生育三烯酚由胚芽贡献。在基因型之间观察到植物化学物质含量存在相当大的差异。糯玉米的生育酚、生育三烯酚和生育三烯酚含量最高，同时糯玉米的类胡萝卜素和植酸磷含量最低。高赖氨酸玉米的类胡萝卜素含量最高，生育三烯酚含量最低。总体而言，总类胡萝卜素与总生育三烯酚显著负相关。
