What is it about?
This study reports the green synthesis of multifunctional nitrogen-doped carbon quantum dots from Ginkgo biloba leaves and their application in antibacterial, antioxidant, cytocompatible, and CMC-based bioactive coating systems for food packaging. It transforms underutilized plant waste into multifunctional N-CQDs that can enhance antioxidant, antibacterial, and bioactive coating performance for sustainable food packaging and shelf-life extension.
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Photo by National Institute of Allergy and Infectious Diseases on Unsplash
Why is it important?
This research is important because it converts Ginkgo biloba leaf waste into value-added nitrogen-doped carbon quantum dots for sustainable food packaging. Instead of using synthetic or petroleum-derived additives, it uses a renewable biomass source and green synthesis to produce multifunctional nanomaterials. The resulting N-CQDs provide antioxidant and antibacterial activity, helping slow food deterioration and improve coating performance. By combining material synthesis, characterization, safety evaluation, and bioactive coating application, the study moves beyond basic nanomaterial preparation toward practical food preservation. It supports waste-to-wealth utilization, circular bioeconomy, and next-generation active packaging technologies with real application potential and industrial relevance for sustainability.
Perspectives
This research opens new opportunities for developing biomass-derived carbon quantum dots as multifunctional additives for sustainable active packaging. Future studies should focus on improving synthesis scalability, controlling particle size and surface chemistry, and evaluating long-term stability in real food systems. Detailed migration, toxicity, biodegradation, and regulatory assessments are essential before commercial application. The integration of N-CQDs into biodegradable films, edible coatings, freshness indicators, and smart packaging systems could further expand their practical value. Combining CQDs with biopolymers, natural antioxidants, or antimicrobial agents create synergistic packaging materials capable of improving food safety, extending shelf life, and reducing food and packaging waste.
Dr. Ajit Kumar Singh
Yonsei University
Read the Original
This page is a summary of: Facile and green synthesis of multifunctional nitrogen-doped carbon quantum dots from Ginkgo biloba leaves for antibacterial, antioxidant, and bioactive coating applications, Food Packaging and Shelf Life, September 2025, Elsevier,
DOI: 10.1016/j.fpsl.2025.101581.
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