Tesis profesional presentada por José Ángel Cuellar Sánchez [jose.cuellarsz@udlap.mx]

Miembro del Programa de Honores. Licenciatura en Nanotecnología e Ingeniería Molecular. Departamento de Ciencias Químico Biológicas. Escuela de Ciencias, Universidad de las Américas Puebla.

Jurado Calificador

Director: Dr. Ricardo Navarro Amador
Presidente: Dra. Jessica Rosaura Campos Delgado
Secretario: Dra. Mónica Cerro López

Cholula, Puebla, México a 2 de diciembre de 2024.

Abstract

The current socioeconomic and political landscape has put considerable stress over the underdeveloped sectors of the population. Challenges like hunger, undernourishment and food insecurity have plateaued substantially, with data suggesting undernourishment levels equal to those 15 years back. Herein, a novel Nanocellulose-ZIF-Eugenol (NcZ) composite material is proposed as a means to increase the shelf life of commonly perishable foods by halting bacterial growth in the food package environment. The successful synthesis of the NcZ composite is evidenced by characterization techniques such as XRD, SEM/EDX, BET, among others. The NcZ composites displayed good antimicrobial activity, forming distinct inhibition halos across multiple S. aureus growth mediums in a well-diffusion assay.

Keywords: Metal-organic frameworks, ZIF-8, nanocellulose, antibacterial.

Table of content

Acknowledgements

Chapter 1. Introduction

Chapter 2. Justification

Chapter 3. General Objectives

  • 3.1 Specific Objectives

Chapter 4. Literature Review

Chapter 5. Methodology

  • 5.1 Reagents and Equipment
  • 5.2 Synthesis of zeolitic imidazolate framework (ZIF-8)
  • 5.3 Synthesis of the nanocellulose-ZIF8 composite (NcZ composite)
  • 5.4 Functionalization of the NcZ composites with eugenol
  • 5.5 Antimicrobial activity

Chapter 6. Results and Discussion

  • 6.1 rtZIF-8
  • 6.2 htZIF-8
  • 6.3 NcZ Composites
  • 6.4 Composite’s physical properties as a function of their humidity level 5. before lyophilization
  • 6.6 Composite’s swelling degree and water stability
  • 6.7 Antimicrobial activity

Chapter 7. Conclusions

  • 7.1 Recommendations

References

Cuellar Sánchez, J. Á. 2024. ZIF-8/Nanocellulose-based composites for antibacterial applications in food packaging. Tesis Licenciatura. Nanotecnología e Ingeniería Molecular. Departamento de Ciencias Químico Biológicas, Escuela de Ciencias, Universidad de las Américas Puebla. Diciembre. Derechos Reservados © 2024.