Department of Technology, Maize Research Institute, Belgrade-Zemun, Serbia.
J Agric Food Chem. 2012 Feb 8;60(5):1224-31. doi: 10.1021/jf204367z. Epub 2012 Jan 26.
In this study, the contents of total phenolics, flavonoids, anthocyanins, β-carotene, and lutein as well as free, conjugated, and insoluble bound phenolic acids were determined in whole kernels of 10 different colored maize genotypes. In addition, the antioxidant activity was evaluated as radical scavenging activity with ABTS (2,2-azino-bis/3-ethil-benothiazoline-6-sulfonic acid) and DPPH (2,2-diphenyl-1-picrylhydrazyl) reagents. Generally, considerable differences in phytochemical contents and antioxidant capacity were observed between the genotypes. The β-carotene and lutein contents ranged from 0 to 2.42 mg/kg d.m. and from 0 to 13.89 mg/kg d.m., respectively, whereas the total anthocyanin contents of anthocyanin-rich colored maize genotypes ranged from 2.50 to 696.07 mg CGE/kg d.m. (cyanidin 3-glucoside equivalent) with cyanidin 3-glucoside (Cy-3-Glu) as the most dominant form. The light blue ZPP-2 selfed maize genotype has a higher content of total phenolics, flavonoids, and ferulic acid as compared to other tested maize and the highest ABTS radical scavenging activity.
在这项研究中，测定了 10 种不同颜色玉米基因型的整粒中总酚、类黄酮、花青素、β-胡萝卜素和叶黄素以及游离、共轭和不溶性结合的酚酸含量。此外，还评估了用 ABTS（2,2-连氮-双（3-乙基苯并噻唑啉-6-磺酸））和 DPPH（2,2-二苯基-1-苦基肼）试剂测定的抗氧化活性。通常，基因型之间的植物化学物质含量和抗氧化能力存在很大差异。β-胡萝卜素和叶黄素含量分别在 0 至 2.42mg/kg d.m.和 0 至 13.89mg/kg d.m.之间，而富含花青素的有色玉米基因型的总花青素含量在 2.50 至 696.07mg CGE/kg d.m.（矢车菊素 3-葡萄糖苷当量）之间，以矢车菊素 3-葡萄糖苷（Cy-3-Glu）为主要形式。与其他测试的玉米相比，浅蓝色 ZPP-2 自交玉米基因型的总酚、类黄酮和阿魏酸含量更高，ABTS 自由基清除活性最高。
