HYBRID EVENT: You can participate in person at Rome, Italy or Virtually from your home or work.

4th Edition of Euro-Global Conference on Biotechnology and Bioengineering

September 19-21 | Hybrid Event

September 19-21, 2024 | Rome, Italy
ECBB 2023

Luis Jesus Villarreal Gomez

Luis Jesus Villarreal Gomez, Speaker at Biotechnology Conferences
Universidad Autonoma de Baja California, Mexico
Title: ChAgG-PCL/PVP electrospun fibers as wound dressings


Wound dressings have been used to clean, cover, and protect the wound from the external environment. However, choosing an adequate dressing will reduce the time of healing, provide cost-effective care, and improve the patient’s quality of life. Electrospun fibers have gained attention in this area due to their variety of properties such as biocompatibility, biodegradability, adequate mechanical properties, and moisture. An additional property such as bioactivity against microorganisms is always desired, for that reason, the objective of this work is to propose a wound dressing system made of functionalized electrospun nanofibers of poly (caprolactone)/poly (vinyl pyrrolidone) (PCL/PVP) with a nanocomposite of Chitosan/Silver Nanocrystals/Graphene Oxide (ChAgG). The ChAgG nanostructured composite material is composed of Chitosan from corn (Ch), silver nanocrystals from garlic (Allium sativum), and Graphene Oxide (G), therefore, these fibers were functionalized with ChAgG nanocomposite solution using blending electrospinning in different proportions (1, 5, and 10%). By infrared spectroscopy (FTIR) and through the deconclusion of the bands by X-Ray photoelectron spectroscopy (XPS) and images by transmission electron microscopy (TEM), the nanocomposites were characterized for the presence of the different elements that compose them. On other hand, resulting fibrous dressings were characterized using scanning electron microscopy, to observe the morphology and obtain fibers diameters data. Thermal analyses (TGA and DSC) and FTIR in order to evidence the incorporation of ChAgG in/on the fiber’s polymeric matrix. Mechanical properties indicated that fibers with 5% of the ChAgG formulation were the most interesting formulation and the best candidate for wound dressing applications. For future work, citotoxicity, antimicrobial activity and animal testing demonstration of the capacity of the chosen system can be done. These results will lead to an optimized wound dressing with antimicrobial properties that can compete on the actual market.

Audience Take Away Notes :

  • The basis of the electrospinning technique
  • The potential use of electrospun nanofibers
  • Method for surface modification of these fibrous smart in order to promote bioactive properties such as antimicrobial
  • Desired mechanical properties and biocompatibility


Dr. Luis Villarreal is a research professor at the Faculty of Engineering Sciences and Technology, Autonomous University of Baja California, Tijuana, Baja California, Mexico. So far, Dr. Villarreal has published 42 indexed articles, with a total of 652 citations in Scopus. He has participated in more than 55 national and international congresses. Founder and editor-in-chief of the Revista de Ciencias Tecnológicas (RECIT), member of the editorial board of important publishers such as Bentham, MDPI, Hindawi and referee of 162 articles. Evaluator of research projects in Mexico, Italy, Malaysia and Peru. His research lines Biomaterials, Tissue Engineering, Drug-Release Systems and Biotechnology.