Improvements in the Extractive and Carbohydrate Analysis of Sugarcane Bagasse

Barbosa, Paula S.; Barbosa, Márcio H. P.; Faria, Bruno de Freitas Homem de; Teófilo, Reinaldo F.

doi:10.1007/s12649-020-01268-y

Cited by 7 publications

(5 citation statements)

References 38 publications

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“…The extractives of peach palm inner sheath and peach palm peel were 35.12 ± 2.05 g/100 g of material and 30.20 ± 1.80 g/100 g of material, respectively. These extractive values are higher than those found in other lignocellulosic residues such as sugarcane bagasse (8.67-19.5%) [28], rice husk (1.82%) [29], and wheat straw (4.2-4.6%) [30]. The lignocellulosic fibers, with or without P. ostreatus-treatment, were further evaluated using three physical methods: Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA) The FTIR spectroscopy of untreated and pretreated samples is generally performed by focusing on the modifications in the bands corresponding to lignin, cellulose and hemicelluloses (Figure 3).…”

Section: Chemical and Physical Characterization Of Untreated And P Os...contrasting

confidence: 63%

Section: Chemical and Physical Characterization Of Untreated And P Os...contrasting

confidence: 54%

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Improving Enzymatic Saccharification of Peach Palm (Bactris gasipaes) Wastes via Biological Pretreatment with Pleurotus ostreatus

de Cássia Spacki,

Novi,

de Oliveira-Junior

et al. 2023

Plants

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The white-rot fungus Pleurotus ostreatus was used for biological pretreatment of peach palm (Bactris gasipaes) lignocellulosic wastes. Non-treated and treated B. gasipaes inner sheaths and peel were submitted to hydrolysis using a commercial cellulase preparation from T. reesei. The amounts of total reducing sugars and glucose obtained from the 30 d-pretreated inner sheaths were seven and five times higher, respectively, than those obtained from the inner sheaths without pretreatment. No such improvement was found, however, in the pretreated B. gasipaes peels. Scanning electronic microscopy of the lignocellulosic fibers was performed to verify the structural changes caused by the biological pretreatments. Upon the biological pretreatment, the lignocellulosic structures of the inner sheaths were substantially modified, making them less ordered. The main features of the modifications were the detachment of the fibers, cell wall collapse and, in several cases, the formation of pores in the cell wall surfaces. The peel lignocellulosic fibers showed more ordered fibrils and no modification was observed after pre-treatment. In conclusion, a seven-fold increase in the enzymatic saccharification of the Bactris gasipaes inner sheath was observed after pre-treatment, while no improvement in enzymatic saccharification was observed in the B. gasipaes peel.

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Section: Chemical and Physical Characterization Of Untreated And P Os...contrasting

confidence: 63%

Section: Chemical and Physical Characterization Of Untreated And P Os...contrasting

confidence: 54%

Improving Enzymatic Saccharification of Peach Palm (Bactris gasipaes) Wastes via Biological Pretreatment with Pleurotus ostreatus

de Cássia Spacki,

Novi,

de Oliveira-Junior

et al. 2023

Plants

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“…Extractives correspond to non-chemically bound substances from the lignocellulosic matrix. According to Barbosa et al [25], substances such as waxes, saponins, resins, and phenols make up extractives from sisal samples. In the present study, the extractive contents were 23.2%, 33.4%, and 24.3% for Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 agave residues, respectively.…”

Section: Resultsmentioning

confidence: 99%

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Thomas,

Cavalcante,

de Araújo Padilha

et al. 2024

Biomass Conv. Bioref.

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The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized waste. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate waste disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were used as precursors and methylene blue (MB) dye was used as a solute. In general, agave residues presented similar contents of lignin (12.1-13.2%) and ash (10.3-13.9%), while the greatest differences were recorded in the values of holocellulose (31.4%-42.4%) and extractives (23.2%-33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochar, presenting static (80 mg.g -1 ) and dynamic (180 mg.g -1 ) adsorption values. Thus, thermochemical valorization of agave residue is attractive to obtain a cheap and environmentally friendly adsorbent.

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“…According to Barbosa et al. [25], substances such as waxes, saponins, resins, and phenols make up extractives from sisal samples. In the present study, the extractive contents were aromatic ring (890 cm − 1 ) [30].…”

Section: Resultsmentioning

confidence: 99%

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

THOMAS,

Cavalcante,

Padilha

et al. 2023

Preprint

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The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized waste. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate waste disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were used as precursors and methylene blue (MB) dye was used as a solute. In general, agave residues presented similar contents of lignin (12.1-13.2%) and ash (10.3-13.9%), while the greatest differences were recorded in the values of holocellulose (31.4%-42.4%) and extractives (23.2%-33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochar, presenting static (80 mg.g-1) and dynamic (180 mg.g-1) adsorption values. Thus, thermochemical valorization of agave residue is attractive to obtain a cheap and environmentally friendly adsorbent.

show abstract

Improvements in the Extractive and Carbohydrate Analysis of Sugarcane Bagasse

Cited by 7 publications

References 38 publications

Improving Enzymatic Saccharification of Peach Palm (Bactris gasipaes) Wastes via Biological Pretreatment with Pleurotus ostreatus

Improving Enzymatic Saccharification of Peach Palm (Bactris gasipaes) Wastes via Biological Pretreatment with Pleurotus ostreatus

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

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