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<p>Essential oils offer a viable alternative to traditional agrochemicals, mitigating problems such as environmental contamination and weed resistance. However, application faces challenges such as low solubility in water and rapid environmental degradation. To overcome these limitations, nanoemulsions containing essential oils from <i>Piper amalago</i> L. and <i>Piper dilatatum</i> Rich were formulated using ultrasonic homogenization. These nanoemulsions were investigated for their herbicidal properties through phytotoxic and cytogenotoxic activity assays using weed plants <i>Bidens pilosa</i> L. and <i>Lolium multiflorum</i> Lam., and model plant <i>Lactuca sativa</i> L. The results indicated that the nanoemulsions presented nanometric-sized droplets (~ 10&#xa0;nm), PDI close to 0, and greater thermal stability compared to essential oils. The nanoemulsions exerted an inhibitory effect on germination and growth of plants studied, possibly due to cytogenotoxic and mutagenic damages observed. Furthermore, content of photosynthetic pigments was affected, indicating oxidative damage and changes in chlorophyll metabolism.</p>

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Bioherbicidal and cytogenotoxic potential of nanoemulsions containing essential oils from Piper amalago and Piper dilatatum

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月2日

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  • Loren Cristina Vasconcelos,
  • Luiza Alves Mendes,
  • Aline dos Santos Bergamin,
  • Geisiele Silva Martins,
  • Kaoany Ferreira da Silva,
  • Mayla Bessa Scotá,
  • Isabelly da Silva Izidio,
  • Jéssika Santos de Oliveira,
  • Suelane Costa dos Santos,
  • Rafael Resende Assis Silva,
  • Arthur Vinicius de Abreu Oliveira,
  • Taíla Veloso de Oliveira,
  • Tatiana Tavares Carrijo,
  • Milene Miranda Praça-Fontes

摘要

Essential oils offer a viable alternative to traditional agrochemicals, mitigating problems such as environmental contamination and weed resistance. However, application faces challenges such as low solubility in water and rapid environmental degradation. To overcome these limitations, nanoemulsions containing essential oils from Piper amalago L. and Piper dilatatum Rich were formulated using ultrasonic homogenization. These nanoemulsions were investigated for their herbicidal properties through phytotoxic and cytogenotoxic activity assays using weed plants Bidens pilosa L. and Lolium multiflorum Lam., and model plant Lactuca sativa L. The results indicated that the nanoemulsions presented nanometric-sized droplets (~ 10 nm), PDI close to 0, and greater thermal stability compared to essential oils. The nanoemulsions exerted an inhibitory effect on germination and growth of plants studied, possibly due to cytogenotoxic and mutagenic damages observed. Furthermore, content of photosynthetic pigments was affected, indicating oxidative damage and changes in chlorophyll metabolism.