Extraction of cellulose nanofibrils and nanocrystals from a new cultivar of pineapple (Ananas comosus ‘Vitória’) from the Amazon region DOI Open Access
Silma de S. Barros, Wanison A.G. Pessoa, Bárbara Pereira

и другие.

Biofuels Bioproducts and Biorefining, Год журнала: 2025, Номер unknown

Опубликована: Март 15, 2025

Abstract The expansion of the agroindustrial sector has led to a significant increase in crop residues, particularly from large‐scale pineapple production. Pineapple leaves, major byproduct, are often burned plantations or improperly discarded, causing environmental harm. As lignocellulosic materials, rich cellulose, these leaves present an opportunity for value‐added applications. This study aimed extract and characterize components including moisture content, ash, extractives, holocellulose, alpha‐cellulose, cellulose nanofibrils (CNFs) via mechanical milling, as well nanocrystals (CNCs) acid hydrolysis (H 2 SO 4 , 60% m/m). Characterization techniques included X‐ray fluorescence (XRF), diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), dynamic light scattering (DLS), atomic force (AFM). results showed that contain approximately 55% proportion CNC CNF extraction Type I cellulose. crystallinity index was 48% 71% CNFs, 84% CNCs, demonstrating effectiveness methods used. spectra confirmed presence revealed reduced lignin‐related bands (1620 1606 cm −1 ) nanocellulose samples. Thermogravimetric indicated lower thermal stability CNCs due sulfate groups introduced during hydrolysis. Scanning imaging fresh samples exhibited lamellar structure with smooth surfaces waxes amorphous where extracted had rougher texture following their removal. Dynamic AFM nanoscale dimensions validating process.

Язык: Английский

Extraction of cellulose nanofibrils and nanocrystals from a new cultivar of pineapple (Ananas comosus ‘Vitória’) from the Amazon region DOI Open Access
Silma de S. Barros, Wanison A.G. Pessoa, Bárbara Pereira

и другие.

Biofuels Bioproducts and Biorefining, Год журнала: 2025, Номер unknown

Опубликована: Март 15, 2025

Abstract The expansion of the agroindustrial sector has led to a significant increase in crop residues, particularly from large‐scale pineapple production. Pineapple leaves, major byproduct, are often burned plantations or improperly discarded, causing environmental harm. As lignocellulosic materials, rich cellulose, these leaves present an opportunity for value‐added applications. This study aimed extract and characterize components including moisture content, ash, extractives, holocellulose, alpha‐cellulose, cellulose nanofibrils (CNFs) via mechanical milling, as well nanocrystals (CNCs) acid hydrolysis (H 2 SO 4 , 60% m/m). Characterization techniques included X‐ray fluorescence (XRF), diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), dynamic light scattering (DLS), atomic force (AFM). results showed that contain approximately 55% proportion CNC CNF extraction Type I cellulose. crystallinity index was 48% 71% CNFs, 84% CNCs, demonstrating effectiveness methods used. spectra confirmed presence revealed reduced lignin‐related bands (1620 1606 cm −1 ) nanocellulose samples. Thermogravimetric indicated lower thermal stability CNCs due sulfate groups introduced during hydrolysis. Scanning imaging fresh samples exhibited lamellar structure with smooth surfaces waxes amorphous where extracted had rougher texture following their removal. Dynamic AFM nanoscale dimensions validating process.

Язык: Английский

Процитировано

0