Seed isoflavone profiling of 1168 soybean accessions from major growing ecoregions in China

作者：Muhammad Azam, Shengrui Zhang, Ahmed M. Abdelghany, Abdulwahab S. Shaibu, Yue Feng, Yanfei Li, Yu Tian, Huilong Hong, Bin Li, Junming Sun · 发表于：Food Research International · 年份：2019 · DOI：10.1016/j.foodres.2019.108957 · 被引用次数：103 · 研究领域：Phytoestrogen effects and research、GABA and Rice Research、Soybean genetics and cultivation

Soybean (Glycine max L. Merrill) isoflavones are secondary metabolites of great interest because of their beneficial impact on human health. We profiled the seed isoflavone composition of 1168 soybean accessions collected from diverse ecoregions of China in three locations over two years. We observed significant differences in isoflavone content among the accessions, accession types, years of growth and ecoregions of origin. Total isoflavone (TIF) concentration of the soybean accessions ranged from 745 μg g−1 to 5253.98 μg g−1, which represents a 7-fold difference. The highest mean TIF concentration (2689.27 μg g−1) was observed in the Huang Huai Hai Valley Region (HR) accessions, followed by accessions from the Southern Region (SR) and Northern Region (NR) with TIF concentration of 2518.91 μg g−1 and 1942.78 μg g−1, respectively. Thirty-five accessions were identified as elite soybean resources based on their higher TIF concentration (4024.74 μg g−1 to 5253.98 μg g−1). Pairwise correlation analysis showed significant positive correlations between individual isoflavones and TIF concentrations. Malonyldaidzin and malonylgenistin showed the highest correlations with TIF concentration (r = 0.90 and r = 0.92, respectively), whereas acetyldaidzin showed the lowest correlation. The main isoflavone components had significant negative correlations with latitude and longitude, indicating that the geographical origin of the accessions influenced their seed isoflavone composition. Based...