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<p>The increasing global demand for functional foods rich in nutrients has spurred the exploration of agricultural practices aimed at enhancing the nutritional quality of crops. This study explored the effects of potassium biofortification on quinoa microgreens (QMG). The results showed that treatment with 8 mmol·L<sup>− 1</sup> KCl increased fresh weight by 60.25-fold, reduced nitrate and free amino acids, and increased the contents of soluble sugars, proteins, vitamin C, fats, and cellulose. The application of potassium also increased the contents of polyphenols, flavonoids, and saponins, as well as the activity of antioxidant enzymes. A comprehensive evaluation indicated that QMG harvested 25 days after germination had optimal nutritional value and lower nitrate content. This study demonstrates that potassium biofortification is an effective strategy to improve the yield, nutritional quality, and health-promoting value of QMG, providing a theoretical basis for its development as a functional food.</p>

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Potassium Biofortification of Quinoa Microgreens: A Holistic Enhancement of Yield, Nutritional Components, and Bioactive Content

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Qiang Wang,
  • Xiaonan Yan,
  • Xiaotian Liang,
  • Zhiyan Wang,
  • Laichun Guo,
  • Chao Zhan,
  • Yu Wang,
  • Chunlong Wang,
  • Huange Huang,
  • Weiwei Xu,
  • Dabing Xiang,
  • Wenjun Sun,
  • Xiaoyong Wu,
  • Liang Zou,
  • Lei Wang,
  • Lianxin Peng,
  • Jingwei Huang,
  • Yan Wan

摘要

The increasing global demand for functional foods rich in nutrients has spurred the exploration of agricultural practices aimed at enhancing the nutritional quality of crops. This study explored the effects of potassium biofortification on quinoa microgreens (QMG). The results showed that treatment with 8 mmol·L− 1 KCl increased fresh weight by 60.25-fold, reduced nitrate and free amino acids, and increased the contents of soluble sugars, proteins, vitamin C, fats, and cellulose. The application of potassium also increased the contents of polyphenols, flavonoids, and saponins, as well as the activity of antioxidant enzymes. A comprehensive evaluation indicated that QMG harvested 25 days after germination had optimal nutritional value and lower nitrate content. This study demonstrates that potassium biofortification is an effective strategy to improve the yield, nutritional quality, and health-promoting value of QMG, providing a theoretical basis for its development as a functional food.