Valorization of Cotton Wastes for Production of Cellulose Nanocrystals

Sharaby, Muhammed R.; Soliman, Emad A.; Abdel‐Rahman, Adel B.; Egiza, Ahmed Osman; Khalil, Rowaida

doi:10.4028/p-7369dc

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…CNC was prepared from cotton linter by acid hydrolysis according to our previous work 26 . The CNC's average dimensions were determined using transmission electron microscopy (TEM).…”

Section: Methodsmentioning

confidence: 99%

Novel pectin-based nanocomposite film for active food packaging applications

Sharaby

Soliman

Abdel‐Rahman

et al. 2022

Sci Rep

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Novel pectin-based films reinforced with crystalline nanocellulose (CNC) and activated with zinc oxide nanoparticles (ZnO NPs) were prepared by solvent-casting method. Film ingredients enhanced UV-blocking, thermal, and antibacterial properties of active films against well-known foodborne pathogens. Optimal active films exhibited higher mechanical, water vapor barrier properties compared to pristine pectin films. SEM confirmed the even distribution of CNC and ZnO NPs in pectin matrix and their interactions were proven using FTIR. Wrapping hard cheese samples artificially contaminated with Staphylococcus aureus and Salmonella enterica with the ternary nanocomposite film at 7 °C for 5 days significantly reduced the total population counts by at least 1.02 log CFU/g. Zn2+ migrating to wrapped cheese samples was below the specific limit (5 mg/kg), confirming their safety for food contact. Overall, ZnO/CNC/pectin nanocomposite films represent promising candidates for active food packaging as safe, eco-friendly alternatives for synthetic packaging materials.

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“…CNC was prepared from cotton linter by acid hydrolysis according to our previous work 26 . The CNC's average dimensions were determined using transmission electron microscopy (TEM).…”

Section: Methodsmentioning

confidence: 99%

Novel pectin-based nanocomposite film for active food packaging applications

Sharaby

Soliman

Abdel‐Rahman

et al. 2022

Sci Rep

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“…Cellulose nanocrystals (CNCs) are a type of NC, and their morphology is usually rod-shaped, which has the advantages of being renewable and biodegradable, and having large specific surface area, high hydrophilicity, high transparency, high strength, etc. (Sharaby et al 2022). In addition, it has been widely used in many fields, such as papermaking, medicine, and food (Bangar et al 2022;Li et al 2022;Mali and Sherje 2022;Xu et al 2022).…”

Section: Introductionmentioning

confidence: 99%

A simple and rapid method for the diameter detection of cellulose nanocrystals via sedimentation method

Huang

Xing

Zhou³

et al. 2022

BioRes

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The diameter of nanocellulose most often is detected using scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), and other related techniques. These detection methods are not only expensive, time-consuming, and complicated to operate, but also are not conducive to the detection of the diameter during the actual production of nanocellulose. In this study, the settling height of cellulose nanocrystals (CNCs) was related to CNC diameter by sedimentation method to find a convenient technique for the rapid detection of CNC diameter. The results showed that when the CNC concentration was at 0.2 wt%, the sodium chloride (NaCl) dosage at 40 g/L, and at the standing time of 48 h, the CNC sedimentation performance was the best. Furthermore, with the increase of CNC diameter, the settling height of CNCs gradually decreased. The relationship between CNC diameter and settling height was Y (Settling height) = -30.17 ln(X (CNC diameter)) + 123.64; and the coefficient of determination for the fit was 0.9965. This research provides a new method for the diameter detection of CNCs in the actual CNCs production in enterprises.

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Valorization of Cotton Wastes for Production of Cellulose Nanocrystals

Cited by 2 publications

References 24 publications

Novel pectin-based nanocomposite film for active food packaging applications

Novel pectin-based nanocomposite film for active food packaging applications

A simple and rapid method for the diameter detection of cellulose nanocrystals via sedimentation method

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