Agricultural Research Council (CRA-NUT) , Rome , Italy.
Int J Food Sci Nutr. 2013 Dec;64(8):959-67. doi: 10.3109/09637486.2013.825696. Epub 2013 Aug 15.
The present study was performed to evaluate the distribution of phytochemicals in wheat grains and millstreams and the contribution of these compounds to the antioxidant activity. Bioactive molecules, although related to genotype, were highly affected by the milling procedure applied. Carotenoids were unevenly distributed in the kernel and lutein resulted to be the main carotenoid in all samples considered. The WSB method was confirmed to be a useful tool to detect yellow color intensity of semolina but it was not suitable to get information on the true content of carotenoids of the sample. Water-methanol soluble components showed antioxidant activity which decreased from the outer to the inner parts of the kernel. Chloroform-methanol soluble compounds showed generally negligible or negative antioxidant activity due to the inadequate amount of antioxidants unable to counteract oxidative processes already in progress.
本研究旨在评估小麦籽粒和麦麸中植物化学物质的分布，以及这些化合物对其抗氧化活性的贡献。生物活性分子虽然与基因型有关，但高度受所应用的碾磨工艺的影响。类胡萝卜素在麦粒中分布不均匀，叶黄素是所有考虑样品中的主要类胡萝卜素。WSB 法被证实是一种有用的工具，可以检测粗粒小麦粉的黄色强度，但它不适合获取样品中类胡萝卜素实际含量的信息。水-甲醇可溶成分具有抗氧化活性，从麦粒的外部到内部逐渐降低。氯仿-甲醇可溶化合物由于抗氧化剂的含量不足，无法抵消已经发生的氧化过程，通常表现出可忽略或负的抗氧化活性。
