Department of Biology and Biotechnology, Chair of Biochemistry, University of Warmia and Mazury in Olsztyn, Poland.
Division of Food Science, Institute of Animal Reproduction and Food Research of the Polish Academy of Science, Olsztyn, Poland.
Molecules. 2020 Apr 29;25(9):2075. doi: 10.3390/molecules25092075.
There is only a small acreage of planted soybeans in northern Europe, as the global production of this crop is mainly dictated by the warmer temperatures needed for bountiful yields. The defense response of soybean plants to a cold climate entails the secretion of specific compounds which help mitigate oxidative stress, i.e., antioxidants, including phenolic compounds. The objective of this study was to examine differences in the concentrations of phenolic compounds, their antioxidant properties, and the concentration of key isoflavones (namely genistein, daidzein, malonyl daidzein, malonyl genistein, and daidzin) in the seeds of six soybean cultivars from two different regions of Europe, namely Poland and France. The total phenolic contents, isoflavone levels, and in vitro antioxidant capacities of soybean seeds from most of the investigated cultivars of northeast Europe were found to be greater than those from southwest Europe. The phenolic compounds of seed extracts are primarily responsible for the free-radical scavenging of soybeans. Factors regulating the production of phenolic compounds in the seeds have not been thoroughly elucidated. Hence, the results presented in this paper can be useful in the selection of soybean cultivars with higher levels of seed phenolics, because of their beneficial impact on human health and on the soybean's defense mechanism against plant stresses.
在北欧，种植大豆的面积很小，因为这种作物的全球产量主要取决于丰富产量所需的温暖温度。大豆植物对寒冷气候的防御反应需要分泌特定的化合物来帮助减轻氧化应激，即抗氧化剂，包括酚类化合物。本研究的目的是研究来自欧洲两个不同地区（波兰和法国）的六个大豆品种种子中酚类化合物的浓度、抗氧化特性以及关键异黄酮（即染料木黄酮、大豆苷元、丙二酰化大豆苷元、丙二酰化染料木黄酮和大豆苷）的浓度差异。来自北欧东部调查品种的大豆种子的总酚含量、异黄酮水平和体外抗氧化能力均大于来自西欧的品种。种子提取物中的酚类化合物主要负责清除大豆中的自由基。调节种子中酚类化合物产生的因素尚未得到充分阐明。因此，本文提出的结果可用于选择酚类化合物含量较高的大豆品种，因为它们对人类健康和大豆对植物胁迫的防御机制有有益的影响。
