Carbon dots for food packaging applications

Deepika,; Kumar, Lokesh; Gaikwad, Kirtiraj K.

doi:10.1039/d2fb00020b

Cited by 22 publications

(13 citation statements)

References 61 publications

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“…A critical challenge facing seafood products pertains to lipid photooxidation, particularly evident in fish, prawns, and shrimps, leading to undesirable outcomes such as off-flavor, rancidity, color deterioration, aldehyde formation, and microbial proliferation [1,4,5]. To ensure sustained growth in the seafood product market, it becomes essential to introduce and develop active packaging solutions with high-performance antimicrobial materials capable of reducing off-flavor and blocking harmful UV rays [6][7][8][9]. Zinc oxide (ZnO) has emerged as a promising candidate for active packaging development owing to its dual functionality as a UV-blocking and antimicrobial agent [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Innovative HDPE Composites Enriched with UV Stabilizer and Diatomaceous Earth/Zinc Oxide for Enhanced Seafood Packaging and Antimicrobial Properties

Charoensri,

Shin,

Park

2023

Polymers

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The fisheries industry encounters distinct packaging challenges, including the need to protect perishable seafood from rapid spoilage caused by UV radiation while allowing for reuse. This study tackles these issues by introducing advanced high-density polyethylene (HDPE) composites enhanced with a UV stabilizer and inorganic fillers, such as diatomaceous earth/zinc oxide (DZ). Our investigation explores the transformative effects of weathering on these pioneering composites, evaluating shifts in mechanical, physical, thermal properties, and sub-zero temperature stability. Incorporating a UV stabilizer alongside DZ within the HDPE matrix significantly enhances mechanical performance and weathering resilience. These enhancements extend the longevity of seafood packaging while preserving product quality. Moreover, our findings reveal a substantial breakthrough in antimicrobial properties. The inclusion of DZ, with or without a UV stabilizer, results in an impressive up to 99% enhancement in antibacterial activity against both Gram-positive and Gram-negative bacteria. This discovery not only bolsters the protective attributes of HDPE packaging but also presents a compelling case for the development of active packaging materials derived from DE/ZnO composites. This study bridges the gap between packaging and seafood quality, introducing advanced polymeric packaging technology for seafood products. It highlights the mutually beneficial link between packaging improvements and ensuring seafood quality, meeting industry needs while promoting sustainability.

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Section: Introductionmentioning

confidence: 99%

Innovative HDPE Composites Enriched with UV Stabilizer and Diatomaceous Earth/Zinc Oxide for Enhanced Seafood Packaging and Antimicrobial Properties

Charoensri,

Shin,

Park

2023

Polymers

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“…In a rough projection, 31.8 g of CDs WL‑Oxi is enough to prepare >140,000 cm 2 , or 14 × 1 m for convenience, of a packaging/dressing film that is 0.1 cm thick with a CDs WL‑Oxi concentration equivalent to the CDs’ MBC (2.25 mg/mL). These results suggest a sufficiently wide window of safe applications of CDs WL‑Oxi in areas such as antibacterial wound dressing and food packaging …”

Section: Resultsmentioning

confidence: 99%

Low-Toxicity Antibacterial Carbon Nanodots for Wound Dressings and Food Packaging

Huang,

Hsu,

Wang

et al. 2023

ACS Appl. Nano Mater.

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Carbon nanodots (CDs) are known to inhibit the growth of bacteria, and a developing trend is observed in the literature that attributes such activities specifically to photoactivation, N-doping, and/or surface charge. In this study, we demonstrate that CDs can inhibit bacteria growth as well without these predispositions. Using the minimum inhibitory concentration and minimum bactericidal concentration protocols, we study, without irradiation, the inhibitory activities of CDs that are low in N-content and surface charge, against Escherichia coli O157:H7, Salmonella enterica ser. Typhimurium, and Staphylococcus aureus. The CDs are further tested in a zebrafish model for acute toxicity. These CDs exhibit antibacterial activities comparable to those of previously reported CDs with IC 50 s of 0.66, 0.75, and 1.00 mg/mL for the three bacteria, respectively. They are also shown to have manageable acute toxicity for safe applications in areas such as antibacterial wound dressing and food packaging. These results indicate that our knowledge base of the required characteristics for CDs to be antibacterial is incomprehensive despite the burgeoning of studies in this area, and the biological pathways leading to such activities are much more diverse than the current literature has suggested.

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“…By virtue of their modifiable fluorescence and distinct optical characteristics, carbon dots (CDs) hold the potential to contribute to optoelectronic apparatuses, including but not limited to light-emitting diodes (LEDs), lasers, and photodetectors [ 91 , 189 ]. CDs derived from natural sources could be employed as additives in food packaging materials, helping to improve their barrier properties and enhance food preservation while reducing environmental impact [ 190 – 192 ]. CDs could be used in agricultural applications, such as nanofertilizers or nanopesticides, to improve crop yield and reduce the use of chemical inputs, thus promoting sustainable agriculture practices [ 193 , 194 ].…”

Section: Future Prospects Of Natural Product Carbon Dotsmentioning

confidence: 99%

A recent update on development, synthesis methods, properties and application of natural products derived carbon dots

Sahana,

Gautam,

Singh

et al. 2023

Nat. Prod. Bioprospect.

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Natural resources are practically infinitely abundant in nature, which stimulates scientists to create new materials with inventive uses and minimal environmental impact. Due to the various benefits of natural carbon dots (NCDs) from them has received a lot of attention recently. Natural products-derived carbon dots have recently emerged as a highly promising class of nanomaterials, showcasing exceptional properties and eco-friendly nature, which make them appealing for diverse applications in various fields such as biomedical, environmental sensing and monitoring, energy storage and conversion, optoelectronics and photonics, agriculture, quantum computing, nanomedicine and cancer therapy. Characterization techniques such as Photoinduced electron transfer, Aggregation-Induced-Emission (AIE), Absorbance, Fluorescence in UV–Vis and NIR Regions play crucial roles in understanding the structural and optical properties of Carbon dots (CDs). The exceptional photoluminescence properties exhibited by CDs derived from natural products have paved the way for applications in tissue engineering, cancer treatment, bioimaging, sensing, drug delivery, photocatalysis, and promising remarkable advancements in these fields. In this review, we summarized the various synthesis methods, physical and optical properties, applications, challenges, future prospects of natural products-derived carbon dots etc. In this expanding sector, the difficulties and prospects for NCD-based materials research will also be explored.

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Carbon dots for food packaging applications

Abstract: Nanotechnology in food packaging has emerged as a viable commercial option.

Cited by 22 publications

References 61 publications

Innovative HDPE Composites Enriched with UV Stabilizer and Diatomaceous Earth/Zinc Oxide for Enhanced Seafood Packaging and Antimicrobial Properties

Innovative HDPE Composites Enriched with UV Stabilizer and Diatomaceous Earth/Zinc Oxide for Enhanced Seafood Packaging and Antimicrobial Properties

Low-Toxicity Antibacterial Carbon Nanodots for Wound Dressings and Food Packaging

A recent update on development, synthesis methods, properties and application of natural products derived carbon dots

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