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<p>Qiule 368 (flour maize) and Zhengdan 958 (flint maize) grains were artificially aged at 45&#xa0;°C and 95% relative humidity to investigate the changes in stored compounds of maize grains during aging. During the deterioration process, the respiration rate of maize initially increased and then decreased. Starch, protein, and fat were broken down, and the structures of the stored substances changed. Metabolomic analyses revealed that the artificial aging significantly impacted various crucial metabolic pathways, including intracellular glycolysis and gluconeogenesis, the pentose phosphate pathway, the TCA cycle, and pyruvate metabolism. Consequently, the normal metabolic activity in the cells was hindered. Notably, degeneration had a more pronounced effect on the metabolic pathway of Qiule 368 than that of Zhengdan 958. This disparity could potentially account for the greater storability of the Zhengdan 958.</p>

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Effects of artificial aging on storage substances and physiological metabolism of maize (Zea Mays L.)

  • 期刊论文

  • 发表日期：

    2025年12月10日

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  • Ping-An Ma,
  • Mo-Nan Xue,
  • Yuan-Zhu Xu,
  • Qing-Qing Liu,
  • Shuai-Bing Zhang,
  • Yuan-Sen Hu

摘要

Qiule 368 (flour maize) and Zhengdan 958 (flint maize) grains were artificially aged at 45 °C and 95% relative humidity to investigate the changes in stored compounds of maize grains during aging. During the deterioration process, the respiration rate of maize initially increased and then decreased. Starch, protein, and fat were broken down, and the structures of the stored substances changed. Metabolomic analyses revealed that the artificial aging significantly impacted various crucial metabolic pathways, including intracellular glycolysis and gluconeogenesis, the pentose phosphate pathway, the TCA cycle, and pyruvate metabolism. Consequently, the normal metabolic activity in the cells was hindered. Notably, degeneration had a more pronounced effect on the metabolic pathway of Qiule 368 than that of Zhengdan 958. This disparity could potentially account for the greater storability of the Zhengdan 958.