Bioreactors in solid state fermentation technology: Design, applications and engineering aspects

Arora, Sidharth; Rani, Richa; Ghosh, Sanjoy

doi:10.1016/j.jbiotec.2018.01.010

Cited by 111 publications

(49 citation statements)

References 137 publications

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“…The bioreactors for SSF are designed to overcome these problems. They can be divided into four categories (Figure 1), based on the mode of operation: tray bioreactor, packed-bed bioreactor, fluidized bed bioreactor, and rotary drum bioreactor [33]. Tray bioreactors have a bed that remains almost static, and the air is circulated around it, not being forced to flow through.…”

Section: Production Of Lignocellulosic Enzymes In Ssf Bioreactorsmentioning

confidence: 99%

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

Leite

Sousa

Fernandes

et al. 2021

Current Opinion in Green and Sustainable Chemistry

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Agricultural, forestry, and food industries produce large amounts of lignocellulosic wastes every year. Land disposal of these residues without proper treatment leads to environmental pollution and negative health effects. The recent advances in valorization of agro-industrial wastes by the production of lignocellulolytic enzymes under solid-state fermentation (SSF) are reviewed. SSF is a promising technology to produce lignocellulolytic enzymes. However, the large-scale feasibility is the main challenge of SSF being the control of operational parameters and adequate reactor design the first locks. The current and future trends of SSF bioreactors for lignocellulolytic enzyme production are summarized. SSF allows the production of lignocellulolytic enzymes with high stability at different temperatures and pH, improving their applicability in different industrial settings.

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Section: Production Of Lignocellulosic Enzymes In Ssf Bioreactorsmentioning

confidence: 99%

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

Leite

Sousa

Fernandes

et al. 2021

Current Opinion in Green and Sustainable Chemistry

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“…The main advantage of SSF is the ability to use raw materials from agroindustry waste, but this technology has some drawbacks related to scale-up and the extraction of desired products in the downstream steps [35]. At the laboratory scale, flasks are usually used.…”

Section: Comparison Of the Types Of Cultivation Under Ssfmentioning

confidence: 99%

β-Mannanase Production Using Coffee Industry Waste for Application in Soluble Coffee Processing

et al. 2020

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Soluble coffee offers the combined benefits of high added value and practicality for its consumers. The hydrolysis of coffee polysaccharides by the biochemical route, using enzymes, is an eco-friendly and sustainable way to improve the quality of this product, while contributing to the implementation of industrial processes that have lower energy requirements and can reduce environmental impacts. This work describes the production of hydrolytic enzymes by solid-state fermentation (SSF), cultivating filamentous fungi on waste from the coffee industry, followed by their application in the hydrolysis of waste coffee polysaccharides from soluble coffee processing. Different substrate compositions were studied, an ideal microorganism was selected, and the fermentation conditions were optimized. Cultivations for enzymes production were carried out in flasks and in a packed-bed bioreactor. Higher enzyme yield was achieved in the bioreactor, due to better aeration of the substrate. The best β-mannanase production results were found for a substrate composed of a mixture of coffee waste and wheat bran (1:1 w/w), using Aspergillus niger F12. The enzymatic extract proved to be very stable for 24 h, at 50 °C, and was able to hydrolyze a considerable amount of the carbohydrates in the coffee. The addition of a commercial cellulase cocktail to the crude extract increased the hydrolysis yield by 56%. The production of β-mannanase by SSF and its application in the hydrolysis of coffee polysaccharides showed promise for improving soluble coffee processing, offering an attractive way to assist in closing the loops in the coffee industry and creating a circular economy.

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“…Also fungal derived biopesticides (B. bassiana) have been obtained in tray bioreactors (Xie et al, 2012). More sophisticated options have been used mostly for enzyme production, such as rotatory drum or packed bed reactors, and to a lesser extent for organic acids, antibiotics and sophorolipid with positive results (Arora et al, 2018). In contrast with tray reactors, rotatory drums and packed bed reactors handles the problems associated with mixing, heat removal or use of the heat.…”

Section: Process Developmentmentioning

confidence: 99%

Innovative Production of Bioproducts From Organic Waste Through Solid-State Fermentation

Cerda

Artola

Barrena

et al. 2019

Front. Sustain. Food Syst.

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Solid-state fermentation (SSF) is, by definition, a technology carried out in absence or near absence of free water. Therefore, it allows the use of solid materials as substrates for further biotransformation. SSF has gained attention in the last years being reported as a promising eco-technology that allows obtaining bioproducts of industrial interest using solid biomass (wastes and by-products). Main advantages over conventional submerged fermentation rely on the lower water and energy requirements, which generate minimum residual streams. However, drawbacks related to poor homogeneity and energy and mass transfer often appear, hindering the process yield and the downstream of the produced bioproducts. Despite the difficulties, many successful processes have been reported on the production of a variety of bioproducts such as hydrolytic enzymes, mostly carbohydrases for bioethanol production, and to a lesser extent, aromas, biosurfactants, biopesticides, bioplastics, organic acids or phenolic compounds. Most of the reported research focuses on process development at small scale; however, the main challenges to overcome in SSF are related to the upscaling and the development of a consistent and continuous operation. In this work, the main advances for the production of valuable/innovative bioproducts are presented and discussed.

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Bioreactors in solid state fermentation technology: Design, applications and engineering aspects

Cited by 111 publications

References 137 publications

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

β-Mannanase Production Using Coffee Industry Waste for Application in Soluble Coffee Processing

Innovative Production of Bioproducts From Organic Waste Through Solid-State Fermentation

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