Differences in the metabolic profiles and antioxidant activities of wild and cultivated black soybeans evaluated by correlation analysis

• Published in: Food research international Vol. 100; no. Pt 2; pp. 166 - 174
• Main Authors: Xu, Jiu Liang, Shin, Jeong-Sook, Park, Soo-Kwon, Kang, Sungtaeg, Jeong, Soon-Chun, Moon, Jung-Kyung, Choi, Yongsoo
• Format: Journal Article
• Language: English
• Published: Canada Elsevier Ltd 01.10.2017
• Subjects: Anthocyanins - metabolism; Antioxidant activity; Antioxidants - analysis; Antioxidants - metabolism; Antioxidants - pharmacology; Biflavonoids - metabolism; Catechin - metabolism; Cell Survival - drug effects; Chromatography, Liquid; Correlation analysis; Fabaceae; Glucosides - metabolism; Glycine max - classification; Glycine max - metabolism; Hep G2 Cells - drug effects; Humans; Mass Spectrometry; Metabolome; Metabolomics - methods; Multivariate Analysis; Non-targeted metabolic profiling; Online HPLC-ABTS analysis; Proanthocyanidins - metabolism; Secondary Metabolism; Wild and cultivated soybeans; Wild and cultivated soybeans; Non-targeted metabolic profiling; Correlation analysis; Online HPLC-ABTS analysis; Antioxidant activity
• ISSN: 0963-9969; 1873-7145
• DOI: 10.1016/j.foodres.2017.08.026

Wild soybeans are considered a potential resource for soybean domestication and an important source of genetic diversity for soybean crop improvement. Understanding metabolite-caused bioactivity differences between cultivated and wild soybeans is essential for designing a soybean with enhanced nutritional traits. In this study, the non-targeted metabolic profiling of 26 soybean varieties, 15 wild black soybeans (WBS) and 11 cultivated black soybeans (CBS), using liquid chromatography-mass spectrometry (LC-MS) in combination with multivariate analysis revealed significant differences in 25 differential metabolites. Among these, the soyasaponins Ab and Bb were found to be characteristic metabolites expressed more substantially in CBS than in WBS. Three different antioxidant assays and correlation analysis identified major and minor antioxidants that contributed to WBS having an antioxidant activity 4- to 8-fold stronger than that of CBS. Epicatechin, procyanidin B2, and cyanidin-3-O-glucoside were identified by both association analysis and the online LC-ABTS radical scavenging assay as being major antioxidants. [Display omitted] •Metabolite profiles and antioxidant activity between wild and cultivated black soybeans were investigated.•Soyasaponins Ab and Bb were found to be more substantially expressed in CBS than WBS.•A correlation analysis directly identified major and minor antioxidants in soybean varieties.•Online HPLC-ABTS assay confirmed the major antioxidants evaluated by the correlation analysis.