RETRACTED: Cellulase production through solid-state tray fermentation, and its use for bioethanol from sorghum stover

Idris, Ayman Salih Omer; Pandey, Ashok; Rao, Srinath; Sukumaran, Rajeev

doi:10.1016/j.biortech.2017.03.092

Cited by 102 publications

(30 citation statements)

References 22 publications

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“…However, other crops are also prominent, such as wheat, cassava, rice, banana, and oil palm. Processing these crops generates large amounts of solid residues, including in‐field or agricultural residues (straw, leaves, and foliage) and agro‐industrial processing residues (bagasse, bunches, and shells) with diverse composition and volume (Table ) …”

Section: The Agro‐industrial Residues In South Americamentioning

confidence: 99%

Lignocellulosic biomass from agro‐industrial residues in South America: current developments and perspectives

Magalhães

Carvalho

Pereira

et al. 2019

Biofuels Bioprod Bioref

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South America is a pivotal supplier of agricultural commodities for a growing world population. This large-scale production generates a substantial amount of lignocellulosic residue. Inadequate disposal of this material can lead to putrefaction and leaching, and can attract insects and rodents. Solid residues can be treated by incineration or composting -both causing greenhouse gas emissions. Biotransformation of lignocellulosic residues into valuable products has been proposed as a more sophisticated alternative to burning. However, pretreatment steps are necessary to obtain fermentable sugars for biological or thermochemical transformation into value-added products. In this review, we noted trends in lignocellulosic biomass generation and potential uses, with special attention to the procedures necessary for the generation of fermented products and bio-oil. This survey pointed out that sugarcane bagasse, cereal straws, bananas, and oil-palm biomass can generate about 900 million tonnes of biomass by 2025. Based on production data from several researchers it was estimated that these raw materials have the potential for annual production of more than 550 million tonnes of fermentable sugars (i.e., glucose and xylose), 670 million tonnes of bio-oil, or 4000 TWh of thermal energy. We describe procedures and strategies for the conversion of these residues to produce higher value-added biomolecules and to promote more sustainable application of lignocellulosic biomass

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Section: The Agro‐industrial Residues In South Americamentioning

confidence: 99%

Lignocellulosic biomass from agro‐industrial residues in South America: current developments and perspectives

Magalhães

Carvalho

Pereira

et al. 2019

Biofuels Bioprod Bioref

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“…The process is simple in which the biomass serves as the main carbon source for microbial growth [30][31][32]. The result of the fermentation process produces sugars and then proceeds to enzymatic saccharification to yield bioethanol [31,33]. To a minor extent, the enzyme cleaves and purifies the cellulose function as nanofillers in hybrid nanocomposite [2,19,34,35].…”

Section: Cellulosementioning

confidence: 99%

On the Renewable Polymers from Agro-industrial Biomass: A Mini Review

Wahab

Gowon²,

Elias

2019

J. Idn. Chem. Soc.

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Plant biomass is the most abundant natural resources on earth. However, current strategies for the utilization of agricultural biomass is far from efficient, thus environmental issues related to incompetent management of biomass prevail. Innovative handling of surplus biomass can yield several rewards, which includes renewability and sustainability of the commodity as feedstock for industrial and energy purposes. In fact, an array of different parts of a plant or agro-industrial biomass, for instance, shell, husks, wood, and leaves were successfully converted into advanced carbon materials, for use as absorbent, catalyst enzyme support, electrode, etc. In this review, an extensive literature survey related to areas of renewable sources of biopolymer in both the agricultural and industrial sectors were performed. Information on their industrial value and uses, the fundamentals of their extraction alongside the benefits and major drawbacks of their utilization, are also highlighted. We aim to show that the smart utilization of unwanted agro-industrial biomass encompasses a portion of a bigger scheme that intelligently uses biomass to complement current agricultural advancements that create smart crops and growing them using cleverly designed technology. The best part of this “Waste to Wealth” concept is that every part of the crop is fully utilized. However, a set of clear criteria must be in place to ensure a sustained momentum, so that the green approach of responsible biomass utilization will be fully embraced by nations worldwide.

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“…The combination of T. viride and A. niger used in the hydrolysis stage of this study strongly influences the formation of reducing sugar. T. viride produces high cellulase enzyme and A. niger produced cellulase enzyme b-glucosidase; it improved the hydrolysis process efficiency (Idris et al, 2017) and converted cellulose into glucose (Sun and Cheng, 2002), so that the glucose concentration during hydrolysis continued to increase.…”

Section: The Hydrolysis and Fermentation Processmentioning

confidence: 99%

Utilization of Stalks Waste of Sorghum bicolor (L.) Moench to Produce Bioethanol by using Saccharomyces cerevisiae and S. cerevisiae-Pichia stipitis Consortium

Pandebesie¹,

Kartini²,

Wilujeng³

et al. 2019

J. Ecol. Eng.

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Sweet Sorghum (Sorghum bicolor (L.) Moench) stalks as lignocellulosic agricultural biomass residues are one of the agricultural wastes that do not have economic value and are abundant enough in Indonesia. Compared to sugar cane, total sugar in the sorghum stalk had almost same juice yield. On the basis of the sufficient total sugar content in the sorghum crop residues, sorghum stalk is one of the promising potential sources for bioethanol production. This study was conducted to determine the optimum substrate concentration and microorganism capability to fermentation sorghum stalks using Separated Hydrolysis and Fermentation (SHF) method. The pretreatment conducted in this study was carried out using physical and chemical methods. The sorghum stalks were treated with chopping, drying, grinding and separate with the concentration of 25 grams (5%) and 50 grams (10%), then 0.25% H 2 SO 4 was added and heated at the temperature of 121°C for 10 minutes. The enzymatic hydrolysis method using T.viride and A.niger was performed. After hydrolysis, 20% S.cerevisiae CC 3012 or 20% consortium S.cerevisiae CC 3012-P.stipitis were added for the fermentation process. The data obtained in this research pertanied to the value of lignin, cellulose, hemicellulose, reducing sugar, C, N, P, and bioethanol. The results of this study indicated the highest ethanol yield is produced by 50 g substrate as the optimum substrate using the consortium of S. cerevisiae CC 3012-P. stipitis for 24 hours of fermentation.

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RETRACTED: Cellulase production through solid-state tray fermentation, and its use for bioethanol from sorghum stover

Cited by 102 publications

References 22 publications

Lignocellulosic biomass from agro‐industrial residues in South America: current developments and perspectives

Lignocellulosic biomass from agro‐industrial residues in South America: current developments and perspectives

On the Renewable Polymers from Agro-industrial Biomass: A Mini Review

Utilization of Stalks Waste of Sorghum bicolor (L.) Moench to Produce Bioethanol by using Saccharomyces cerevisiae and S. cerevisiae-Pichia stipitis Consortium

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