1. Biopulp from pineapple leaf fiber produced by colonization with two white-rot fungi: Trametes versicolor and Pleurotus ostreatus
- Author
-
Ricardo Starbird, Alexander Berrocal, Roger Moya, María Rodríguez-Solís, José Vega-Baudrit, Verónica Villalobos-Barquero, and Ana Rodríguez-Zúñiga
- Subjects
Paper ,Thermogravimetric analysis ,Environmental Engineering ,Materials science ,lcsh:Biotechnology ,BIODEGRADABLE ,Bioengineering ,02 engineering and technology ,engineering.material ,010402 general chemistry ,01 natural sciences ,Hongos ,Degradación ,FIBRA ,chemistry.chemical_compound ,Degradation ,lcsh:TP248.13-248.65 ,Botany ,Lignin ,Food science ,Fourier transform infrared spectroscopy ,Cellulose ,Waste Management and Disposal ,Trametes versicolor ,Agricultural waste ,FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING::Plant production::Agronomy [Research Subject Categories] ,Fungus ,DESPERDICIO AGRÍCOLA ,biology ,Pulp (paper) ,Agricultura ,021001 nanoscience & nanotechnology ,biology.organism_classification ,0104 chemical sciences ,chemistry ,Sodium hydroxide ,Hojas ,engineering ,AGROINDUSTRIA ,DESPERDICIO-PIÑA ,Pleurotus ostreatus ,Bioprocess ,0210 nano-technology ,Residuos - Abstract
Artículo científico Trametes versicolor and Pleurotus ostreatus were used for the biopulping from pineapple leaf fiber (PALF). PALF substrate was subjected to T. versicolor for 2 to 6 weeks and to P. ostreatus for 4 to 8 weeks. The yields, holocellulose and lignin contents, and extractives in ethanol-toluene mixture and in sodium hydroxide (NaOH) solution were evaluated. Fourier transform infrared spectroscopy (FTIR) spectra, thermogravimetric analysis (TGA), and color studies by L*a*b* systems were used for sample analysis. The results showed that the pulp yield was 55% to 70% with P. ostreatus and 35% to 50% with T. versicolor. Longer colonization periods increased the amount of holocellulose and decreased the amount of lignin and extractives in ethanol-toluene and NaOH solution. TGA showed an increase in intensity associated with cellulose, and the observed inflexion was attributed to lignin, which showed a tendency to fade. The FTIR spectrum showed high intensity between 3100 cm-1 and 3600 cm-1 (cellulose) and decreased intensity at 1730 cm-1 (lignin). For both fungi, the pulp color produced an increase in L* color parameter and decreased in yellowness, while little variation was observed in redness. The most appropriate colonization period was 5 weeks for P. ostreatus and 4 weeks for T. versicolor.
- Published
- 2016