Scholarlink

<p>This study aimed to assess the efficacy of plant extracts (rose leaf: RL; rose petal: RP; marigold leaf: ML; marigold petal: MP) against postharvest fungi and the impact of edible coatings functionalized with these extracts on the quality of guava fruits during cold storage (10 ± 1&#xa0;°C). In vitro studies revealed that extracts at a total phenolic concentration of above 150&#xa0;mg GAE 100 mL<sup>− 1</sup>, inhibited the growth of <i>Colletotrichum gloeosporioides</i>,<i> Rhizopus stolonifer</i>, and <i>Aspergillus niger</i>, with RL and MP extracts demonstrating greater inhibitory effects. Furthermore, in-vivo experiments demonstrated that 200&#xa0;mg GAE 100 mL<sup>− 1</sup> phenolic concentrations outperformed, with MP extract remarkably reducing lesion diameter with high anti-fungal efficacy against all fungal strains. RL and MP extracts, particularly at 200&#xa0;mg GAE 100 mL<sup>− 1</sup>, emerged as natural alternatives for controlling postharvest fungal infections in guava fruits. Assessment of influence of functionalized carboxymethyl cellulose (CMC) and gum arabic (GA) based formulations on the postharvest quality of guava fruits revealed that, CMC + RL, CMC + MP and GA + RL extended shelf life of fruits by 6 days compared to control in cold storage. Coatings functionalized with plant extracts minimized weight loss, reduced respiration, delayed ripening, maintained firmness and retained antioxidant properties, with CMC + RL consistently outperforming in minimizing PLW (1.3 fold), antioxidant activity (1.29 fold) compared to control. Also, addition of plant extracts exhibited enhanced antioxidant enzymatic activity, especially in CMC + RL, (1.23–1.74 fold), hence boosted the defense system and preserved the postharvest quality of fruits. This study offers insights to the use of plant extract phenolic enriched edible coatings to extend the shelf life of guava by strengthening its natural defenses against postharvest fungi, ensuring better storage quality and reduced losses.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Active edible coatings with plant extracts rich in phenolic compounds to enhance guava storage quality by boosting defense against postharvest fungi

  • 期刊论文

  • 发表日期：

    2025年12月30日

查看全文
  • Lekshmi S. G.,
  • Shruti Sethi,
  • Ram Asrey,
  • Dinesh Singh,
  • A. Nagaraja,
  • Raju Kumar,
  • K. P. Singh,
  • Sindhu P. M.,
  • Ajit Kumar Singh,
  • Raghavendra H. R.

摘要

This study aimed to assess the efficacy of plant extracts (rose leaf: RL; rose petal: RP; marigold leaf: ML; marigold petal: MP) against postharvest fungi and the impact of edible coatings functionalized with these extracts on the quality of guava fruits during cold storage (10 ± 1 °C). In vitro studies revealed that extracts at a total phenolic concentration of above 150 mg GAE 100 mL− 1, inhibited the growth of Colletotrichum gloeosporioides, Rhizopus stolonifer, and Aspergillus niger, with RL and MP extracts demonstrating greater inhibitory effects. Furthermore, in-vivo experiments demonstrated that 200 mg GAE 100 mL− 1 phenolic concentrations outperformed, with MP extract remarkably reducing lesion diameter with high anti-fungal efficacy against all fungal strains. RL and MP extracts, particularly at 200 mg GAE 100 mL− 1, emerged as natural alternatives for controlling postharvest fungal infections in guava fruits. Assessment of influence of functionalized carboxymethyl cellulose (CMC) and gum arabic (GA) based formulations on the postharvest quality of guava fruits revealed that, CMC + RL, CMC + MP and GA + RL extended shelf life of fruits by 6 days compared to control in cold storage. Coatings functionalized with plant extracts minimized weight loss, reduced respiration, delayed ripening, maintained firmness and retained antioxidant properties, with CMC + RL consistently outperforming in minimizing PLW (1.3 fold), antioxidant activity (1.29 fold) compared to control. Also, addition of plant extracts exhibited enhanced antioxidant enzymatic activity, especially in CMC + RL, (1.23–1.74 fold), hence boosted the defense system and preserved the postharvest quality of fruits. This study offers insights to the use of plant extract phenolic enriched edible coatings to extend the shelf life of guava by strengthening its natural defenses against postharvest fungi, ensuring better storage quality and reduced losses.