Effects of alginate oligosaccharides with different molecular weights and guluronic to mannuronic acid ratios on glyceollin induction and accumulation in soybeans

文献类型： 外文期刊

第一作者： Peng, Qing

作者： Peng, Qing;Gao, Long;Eromosele, Ojokoh;Qiao, Yu;Shi, Bo;Zhang, Mimin

作者机构：

关键词： Alginate oligosaccharides; Glyceollin; Soybean; Molecular weight; Ratio of guluronic to mannuronic acid (G/M)

期刊名称：JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE （ 影响因子：2.701； 五年影响因子：3.574 ）

ISSN： 0022-1155

年卷期： 2018 年 55 卷 5 期

页码：

收录情况： SCI

摘要： Alginate oligosaccharides (AOs) are linear oligosaccharides with alternating sequences of mannuronic acid (M) and guluronic acid (G) residues. AOs can be used as a safe elicitor to induce glyceollins, which have many human health benefits, in soybean seeds. In this research, four AO fractions with different chemical structures and molecular weights were separated, purified, and then characterized by NMR spectroscopy and ESI-MS. With a 4,5-unsaturated hexuronic acid residue (a-(3)) at the non-reducing terminus, the structures of these four AO fractions were a-(3)G, a-(3)MG, a-(3)GMG and a-(3)MGGG, which exhibited glyceollin-inducing activities of 1.2339, 0.3472, 0.6494 and 1.0611 (mg/g dry weight) in soybean seeds, respectively. The results demonstrated that a larger molecular weight or a higher G/M ratio might correlate with a higher glyceollin-inducing activity. Moreover, the alginate disaccharide a-(3)G could be introduced as relatively safe and efficient elicitor of high glyceollin content in soybeans.

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