Carbon dots enhanced gelatin/chitosan bio-nanocomposite packaging film for perishable foods

Fu, Bofei; Liu, Qiaoling; Liu, Minghuan; Chen, Xiaofang; Lin, Hetong; Zheng, Zong‐Ping; Zhu, Junqiu; Dai, Chunhua; Dong, Xiaochen; Yang, Da‐Peng

doi:10.1016/j.cclet.2022.03.048

Cited by 67 publications

(18 citation statements)

References 40 publications

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“…54,55 Moreover, the distribution of nanoparticles in membranes is greatly influenced by the size, and extremely small nanoparticles can easily pass through the cell wall. 56,57 As a result, CD's quantum size can penetrate microorganisms' cell walls. The CD enters the cell through the cell wall, interrupting metabolic processes, protein deterioration, and DNA replication, leading to the cell machinery's breakdown and subsequent cell lysis.…”

Section: Thermal Stabilitymentioning

confidence: 99%

Chitosan/Starch-Based Active Packaging Film with N, P-Doped Carbon Dots for Meat Packaging

Khan

Ezati

Rhim

2023

ACS Appl. Bio Mater.

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Nitrogen, phosphorus-doped green-tea-derived carbon dots (NP-CDs) incorporated chitosan/starch (Chi/St) based multifunctional nanocomposite films were prepared. FE-SEM images verified a homogeneous distribution of CDs with minimum aggregation in the fabricated films. Incorporating NP-CDs led to enhanced UV-light blocking (93.1% of UV-A and ∼99.7% of UV–B) without significantly affecting the films’ water transparency and water vapor permeability. Besides, incorporating NP-CDs into the Chi/St films enhanced antioxidant activity (98.0% for ABTS and 71.4% for DPPH) and displayed strong antibacterial activity against L. monocytogenes, E. coli, and S. aureus. Wrapping the meat in the prepared film and storing it at 20 °C has been shown to reduce bacterial growth (less than 2.5 Log CFU/g after 48 h) without significantly altering the actual color of the wrapped meat. The Chi/St film loaded with NP-CD has high potential as an active packaging material to ensure safety and extend the shelf life of meat products.

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Section: Thermal Stabilitymentioning

confidence: 99%

Chitosan/Starch-Based Active Packaging Film with N, P-Doped Carbon Dots for Meat Packaging

Khan

Ezati

Rhim

2023

ACS Appl. Bio Mater.

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“…Some special inorganic nanoparticles even possess antioxidant properties themselves, further enhancing the protective effect to PP. 61 There are three main effects: (I) inorganic nanoparticles feature a larger size than conventional stabilizers, impeding the migration or extraction from polymer matrices, which enhances the antioxidant effect; 62 (II) antioxidants are immobilized onto inorganic nanoparticles through covalent bonds, which enhances their thermal and oxidative stability. Without compromising the ability of antioxidants to scavenge free radicals, the covalent bonding at the reaction interface prevents migration and volatility.…”

Section: Inorganic Immobilizationmentioning

confidence: 99%

Antimigration Polypropylene Antioxidants: A Review

Li,

Zhang,

Jiang

et al. 2024

Ind. Eng. Chem. Res.

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Hindered phenolic antioxidants have been extensively recognized and applied to boost the heat resistance and oxidative aging performance of poly(propylene) (PP) composites. Low-molecular-weight antioxidants are easy to volatilize, migrate, and be extracted from PP or PP-based products, which can directly reduce the antithermal oxidative aging effect of PP and its composites, and it can contaminate food or drugs under its packaging. The design of an efficient and durable antioxidant with antimigration performance has drawn the attention of researchers. Currently, three main approaches are explored: (I) enhancement of molecular weight, that is, high molecular weight of antioxidants can stimulate the structure stability and the resistance toward migration; (II) inorganic immobilization, which involves immobilizing the antioxidants on inorganic substrate to enhance the dispersion and the antimigration performance; and (III) intercalation-mediated assembly, which involved intercalating low-molecular-weight antioxidants into the interlayer region of a layered host to boost antimigration performance based on the host–guest interaction.

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“…The aforementioned characteristics of CDs and their promising applications have opened new avenues for their applicability in the food packaging/ preservation industry. Accordingly, there are several systematically-conducted pieces of research/studies in the literature [174,183] showing the great potential of these unique nanostructures as ideal nanofillers/additives to enhance the thermal, mechanical, physical, UV barrier, and water barrier properties of food packaging, as well as their potential to fabricate active packaging [174,184], with desired antibacterial/antioxidant properties [185], and smart packaging with the ability to detect food freshness/spoilage/quality [186]. A detailed review of the literature clearly shows that, in recent years, there has been a significant increase in the application of green/bio-synthesized CDs for the fabrication of bio-nano composite films/coatings with multiple functions (pH sensing, UV-shielding, antioxidant, antibacterial, etc.)…”

Section: Green Synthesized Carbon Dots Incorporated In Food Packagingmentioning

confidence: 99%

Green synthesis of nanomaterials for smart biopolymer packaging: challenges and outlooks

et al. 2023

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There are several physical and chemical methods for synthesizing nanomaterials, while the most appropriate techniques involve using green chemistry and eco-friendly material. Recently, green synthesized materials for different applications have gained attention as a result of their environmental friendliness and cost-effectiveness. Applying green synthesized nanoparticles (NPS) in food packaging has been extensively investigated. Biopolymers require filler to enhance the optical, barrier, thermal, antimicrobial, and mechanical properties of packaging. Biopolymer packaging incorporated with green synthesized NPs is expected to simultaneously enhance performance while reducing environmental damage. The current review article focuses on biopolymer films with bio (green)-synthesized nanomaterials and their effectiveness in reducing the negative environmental implications of synthetic packaging. It also covers the general concepts of green synthesis of NPs, their production methods, their performance, and characterization, and discusses the potential, performance and recent developments of bio-nanocomposite films/coatings in biodegradable food packaging. Recent reports and trends provide more insight into the impact of green synthesized nanomaterials on food packaging. Graphical Abstract

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Carbon dots enhanced gelatin/chitosan bio-nanocomposite packaging film for perishable foods

Cited by 67 publications

References 40 publications

Chitosan/Starch-Based Active Packaging Film with N, P-Doped Carbon Dots for Meat Packaging

Chitosan/Starch-Based Active Packaging Film with N, P-Doped Carbon Dots for Meat Packaging

Antimigration Polypropylene Antioxidants: A Review

Green synthesis of nanomaterials for smart biopolymer packaging: challenges and outlooks

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