Targeted metabolic reveals different part of maize in polyphenolic metabolites during germination and hypoglycemic activity analysis

Lipeng Liu; Xiaomin Fang; Shida Ren; Rui Jia; Qiannan Liu; Huimin Liu; Lin Xiu; Sanabil Yaqoob; Dan Cai; Jingsheng Liu

doi:10.1016/j.fochx.2023.100848

Targeted metabolic reveals different part of maize in polyphenolic metabolites during germination and hypoglycemic activity analysis

Food Chem X. 2023 Aug 29:19:100848. doi: 10.1016/j.fochx.2023.100848. eCollection 2023 Oct 30.

Authors

Lipeng Liu^{1

2}, Xiaomin Fang^{1

2}, Shida Ren^{1

2}, Rui Jia^{1

2}, Qiannan Liu^{1

2}, Huimin Liu^{1

2}, Lin Xiu^{1

2}, Sanabil Yaqoob^{1

2}, Dan Cai^{1

2}, Jingsheng Liu^{1

2}

Affiliations

¹ College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China.
² National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China.

Abstract

In this study, qualitative and quantitative analyses of phenolic compounds in the maize germinating seed embryo, radicle, and germ were performed at 0, 48, and 96 h post-germination, followed by the evaluation of their hypoglycemic activity. The results revealed the accumulation of 80 phenolics in different parts of germinated maize, of which 47, 48, and 53 were present in the seed embryo, radicle, and germ. After germination 22, 26, and 34 polyphenols were found to differential accumulate in the seed embryo, radicle, and germ. At 96 h post-germination, the content of monomeric phenols in the germ was higher than that in the radicle and seed embryo. Moreover, the inhibitory activity of polyphenols in the germ towards α-glucosidase and α-amylase was higher than that in the radicle and seed embryo. These results indicate that germination can effectively improve the type and content of phenolic compounds in different parts of maize.

Keywords: Hypoglycemic activity; Maize germination; Phenolic compound; Seed part.