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<p><i>Talinum paniculatum</i> (Javanese ginseng), a plant known for its medicinal and nutritional properties, has been extensively studied for its secondary metabolites, including phenolic compounds and antioxidants. This present study investigates the total phenolic content and antioxidant activity of <i>T. paniculatum</i> grown under <i>ex vitro</i> and in vitro conditions. Total phenolic content was quantified spectrophotometrically, while antioxidant activity was evaluated using IC<sub>50</sub> values, with lower IC<sub>50</sub> values indicating stronger antioxidant activity. The findings revealed that the roots of <i>ex vitro</i> plants exhibited the highest total phenolic content, with mature roots achieving 102.25&#xa0;mg GAE/mg DW, significantly surpassing the levels observed in leaves or in vitro cultures. Among in vitro cultures, shoot cultures recorded the highest phenolic content (106.52&#xa0;mg GAE/mg DW), suggesting their potential as an alternative source of bioactive compounds. Antioxidant activity followed a similar trend, with <i>ex vitro</i> roots demonstrating the lowest IC<sub>50</sub> values, signifying the strongest antioxidant activity. Mature <i>ex vitro</i> roots displayed superior antioxidant potential, which was statistically comparable to juvenile <i>ex vitro</i> roots, mature generative <i>ex vitro</i> roots, and in vitro shoot cultures. The results highlight that environmental stimuli encountered during <i>ex vitro</i> growth likely play a pivotal role in enhancing secondary metabolite production in roots. The study underscores the value of <i>T. paniculatum</i> roots, particularly from <i>ex vitro</i> conditions, as a rich source of natural antioxidants. These insights provide a foundation for optimizing growth strategies to enhance the production of phenolic compounds for pharmaceutical and functional food applications.</p>

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Revealing the antioxidant activity and total phenolic content of ex vitro and in vitro Javanese ginseng (Talinum paniculatum (Jacq.) Gaertn.)

  • 期刊论文

  • 发表日期：

    2026年5月23日

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  • Aggy Agatha,
  • Anca Awal Sembada,
  • Alda Wydia Prihartini Azar,
  • Andy Wijaya,
  • Ahmad Faizal

摘要

Talinum paniculatum (Javanese ginseng), a plant known for its medicinal and nutritional properties, has been extensively studied for its secondary metabolites, including phenolic compounds and antioxidants. This present study investigates the total phenolic content and antioxidant activity of T. paniculatum grown under ex vitro and in vitro conditions. Total phenolic content was quantified spectrophotometrically, while antioxidant activity was evaluated using IC50 values, with lower IC50 values indicating stronger antioxidant activity. The findings revealed that the roots of ex vitro plants exhibited the highest total phenolic content, with mature roots achieving 102.25 mg GAE/mg DW, significantly surpassing the levels observed in leaves or in vitro cultures. Among in vitro cultures, shoot cultures recorded the highest phenolic content (106.52 mg GAE/mg DW), suggesting their potential as an alternative source of bioactive compounds. Antioxidant activity followed a similar trend, with ex vitro roots demonstrating the lowest IC50 values, signifying the strongest antioxidant activity. Mature ex vitro roots displayed superior antioxidant potential, which was statistically comparable to juvenile ex vitro roots, mature generative ex vitro roots, and in vitro shoot cultures. The results highlight that environmental stimuli encountered during ex vitro growth likely play a pivotal role in enhancing secondary metabolite production in roots. The study underscores the value of T. paniculatum roots, particularly from ex vitro conditions, as a rich source of natural antioxidants. These insights provide a foundation for optimizing growth strategies to enhance the production of phenolic compounds for pharmaceutical and functional food applications.