Scholarlink

<p>This study presents a sustainable approach to extending the postharvest shelf life of <i>Syzygium cumini</i> L. (Indian blackberry) using bioactive edible films formulated from chitosan and components of <i>Porphyridium purpureum</i> (red microalgae), including exopolysaccharides, their nanoparticles, and whole algal biomass extract. Monosaccharide analysis identified galactose, xylose, glucose, and glucuronic acid as key constituents. The nanoparticles exhibited favourable colloidal properties (mean diameter: 269.3&#xa0;nm; zeta potential: –28.9&#xa0;mV). Films incorporating these nanoparticles showed enhanced transparency, thermal stability, and reduced water vapour transmission compared to controls. Antimicrobial assays revealed a 20&#xa0;mm inhibition zone for algal extract-infused films, confirming broad-spectrum efficacy. Notably, fruit samples coated with nanoparticle-enriched films retained freshness for 12&#xa0;days under ambient conditions, twice as long as uncoated controls. These findings highlight the multifunctional potential of <i>P. purpureum</i> constituents in developing biodegradable, non-toxic packaging materials.</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

Development and characterisation of chitosan-based edible films incorporated with marine red algal exopolysaccharide nanoparticles and their biomass extract for the freshness of Indian blackberry(Syzygium cumini, L.)

  • 期刊论文

  • 发表日期：

    2026年5月2日

查看全文
  • Priyanka K V,
  • Darshan Dorairaj,
  • Lijina P,
  • Vikas Singh Chauhan,
  • Nandini P Shetty

摘要

This study presents a sustainable approach to extending the postharvest shelf life of Syzygium cumini L. (Indian blackberry) using bioactive edible films formulated from chitosan and components of Porphyridium purpureum (red microalgae), including exopolysaccharides, their nanoparticles, and whole algal biomass extract. Monosaccharide analysis identified galactose, xylose, glucose, and glucuronic acid as key constituents. The nanoparticles exhibited favourable colloidal properties (mean diameter: 269.3 nm; zeta potential: –28.9 mV). Films incorporating these nanoparticles showed enhanced transparency, thermal stability, and reduced water vapour transmission compared to controls. Antimicrobial assays revealed a 20 mm inhibition zone for algal extract-infused films, confirming broad-spectrum efficacy. Notably, fruit samples coated with nanoparticle-enriched films retained freshness for 12 days under ambient conditions, twice as long as uncoated controls. These findings highlight the multifunctional potential of P. purpureum constituents in developing biodegradable, non-toxic packaging materials.