A carregar...
Publicação
Rendering banana plant residues into a potentially commercial byproduct by doping cellulose films with phenolic compounds
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 2.59 MB | Adobe PDF |
Orientador(es)
Resumo(s)
This study seeks to render residues from banana plants into a useful byproduct with
possible applications in wound dressings and food packaging. Films based on cellulose extracted
from banana plant pseudostem and doped with phenolic compounds extracted from banana plant
leaves were developed. The phenolic compounds were extracted using batch solid-liquid and Soxhlet
methods, with different drying temperatures and periods of time. The total phenolic content and
antioxidant activity were quantified. The optimum values were obtained using a three-day period
batch-solid extraction at 40 C (791.74 43.75 mg/L). SEM analysis indicates that the pseudostem
(PS) films have a porous structure, as opposed to hydroxyethyl cellulose (HEC) films which presented
a homogeneous and dense surface. Mechanical properties confirmed the poor robustness of PS films.
By contrast HEC films manifested improved tensile strength at low levels of water activity. FTIR
spectroscopy reinforced the need to improve the cellulose extraction process, the success of lignin
and hemicellulose removal, and the presence of phenolic compounds. XRD, TGA and contact angle
analysis showed similar results for both films, with an amorphous structure, thermal stability and
hydrophilic behavior
Descrição
Palavras-chave
banana plant cellulose films leaves phenolic compounds pseudostem
Contexto Educativo
Citação
Nascimento, R.E.A.; Monte, J.; Cadima, M.; Alves, V.D.; Neves, L.A. Rendering Banana Plant Residues into a Potentially Commercial Byproduct by Doping Cellulose Films with Phenolic Compounds. Polymers 2021, 13, 843
Editora
MDPI