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<p>Suspension cell cultures of <i>Panax japonicus</i> and <i>Dioscorea deltoidea</i> are promising sources of plant-derived antioxidant compounds. In this study, aqueous-ethanolic extracts from these cultures were immobilized with maltodextrin and converted into powders by freeze-drying and spray-drying. Antioxidant potential, chemiluminescence kinetic profiles, phytochemical composition, powder properties, and storage stability were evaluated. UPLC-ESI-MS confirmed characteristic metabolites, including ginsenosides in <i>P. japonicus</i> and steroidal glycosides in <i>D. deltoidea</i>. Drying affected antioxidant properties in a species- and assay-dependent manner. Spray-drying increased TAC<sub>FRAP</sub> and TAC<sub>DPPH</sub> in both species, whereas freeze-drying resulted in higher TAC<sub>ORAC</sub>, particularly in <i>P. japonicus</i>, where the value exceeded that of the spray-dried powder by 96.0% (<i>p</i> &lt; 0.05). In contrast, spray-dried <i>D. deltoidea</i> showed higher TAC<sub>FRAP</sub>, TAC<sub>DPPH</sub>, and total phenolic compounds than the freeze-dried powder. Chemiluminescence analysis provided additional kinetic information: freeze-dried <i>P. japonicus</i> retained antioxidant-related effects over the widest dilution range, whereas spray-dried <i>D. deltoidea</i> showed a kinetic profile closer to the native extract. After 6 months, spray-dried <i>P. japonicus</i> retained the highest absolute TAC values, while for <i>D. deltoidea</i>, drying method selection depended on the target antioxidant property. These results support maltodextrin-based drying for obtaining water-dispersible antioxidant powders for food systems.</p>

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Panax japonicus and Dioscorea deltoidea Cell Cultures as a Source of Stable Antioxidant Food Components

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Nadezhda Kupaeva,
  • Maria Titova,
  • Irina Chernukha,
  • Mariya Nesterova,
  • Olga Prudnikova,
  • Tatiana Tyurina,
  • Aleksandr Kruchinin,
  • Viktoriya Pchelkina,
  • Natalia Revutskaya,
  • Liliya Fedulova

摘要

Suspension cell cultures of Panax japonicus and Dioscorea deltoidea are promising sources of plant-derived antioxidant compounds. In this study, aqueous-ethanolic extracts from these cultures were immobilized with maltodextrin and converted into powders by freeze-drying and spray-drying. Antioxidant potential, chemiluminescence kinetic profiles, phytochemical composition, powder properties, and storage stability were evaluated. UPLC-ESI-MS confirmed characteristic metabolites, including ginsenosides in P. japonicus and steroidal glycosides in D. deltoidea. Drying affected antioxidant properties in a species- and assay-dependent manner. Spray-drying increased TACFRAP and TACDPPH in both species, whereas freeze-drying resulted in higher TACORAC, particularly in P. japonicus, where the value exceeded that of the spray-dried powder by 96.0% (p < 0.05). In contrast, spray-dried D. deltoidea showed higher TACFRAP, TACDPPH, and total phenolic compounds than the freeze-dried powder. Chemiluminescence analysis provided additional kinetic information: freeze-dried P. japonicus retained antioxidant-related effects over the widest dilution range, whereas spray-dried D. deltoidea showed a kinetic profile closer to the native extract. After 6 months, spray-dried P. japonicus retained the highest absolute TAC values, while for D. deltoidea, drying method selection depended on the target antioxidant property. These results support maltodextrin-based drying for obtaining water-dispersible antioxidant powders for food systems.