Production of pectinases by solid-state fermentation of a mixture of citrus waste and sugarcane bagasse in a pilot-scale packed-bed bioreactor

Biz, Alessandra; Finkler, Anelize Terezinha Jung; Pitol, Luana Oliveira; Medina, Bruna Schweitzer; Krieger, Nádia; Mitchell, David A.

doi:10.1016/j.bej.2016.03.007

Cited by 107 publications

(41 citation statements)

References 25 publications

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“…The velocity required to calculate the Reynolds number in Eqs. (17) and (18) was estimated assuming uniform distribution of the air over the bed surface. The available area for the fluid to flow was 0.17 m 2 , resulting in a linear velocity equal to 0.0005 m/s and a Reynolds number equal to 21.3, confirming the assumption of laminar flow in the headspace.…”

Section: Experimental Determination Of the Convective Heat Transfer Bmentioning

confidence: 99%

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Investigation of heat transfer in partially filled horizontal drums

Tada

Bück

Casciatori

et al. 2017

Chemical Engineering Journal

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Section: Experimental Determination Of the Convective Heat Transfer Bmentioning

confidence: 99%

“…wheat, rice, soybean), and straws (e.g. wheat, corn, oat) and sugar cane bagasse [8][9][10][11][12][13][14][15][16][17]. The concentration and quality of the bioproduct in SSC depends on the capacity of controlling the operational variables close to the optimal conditions for the microbial metabolism.…”

Section: Introductionmentioning

confidence: 99%

Investigation of heat transfer in partially filled horizontal drums

Tada

Bück

Casciatori

et al. 2017

Chemical Engineering Journal

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“…Some solid-state fermentations are already performed at the commercial scale in the food industry or for waste management and bioremediation processes. Knowledge on bioreactor design is strong and many novel processes have been performed in pilot scale bioreactors [10,11].…”

Section: Introductionmentioning

confidence: 99%

Production of sophorolipids from winterization oil cake by solid-state fermentation: Optimization, monitoring and effect of mixing

Jiménez-Peñalver

Gea

Sánchez

et al. 2016

Biochemical Engineering Journal

101

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Sophorolipids (SLs) are a group of extracellular biosurfactants produced by the yeast Starmerella bombicola. The present study explored the use of winterization oil cake (WOC), a residual oil cake that comes from the oil refining industry, as a substrate for the production of SLs by solid-state fermentation (SSF). Sugar beet molasses (MOL) was used as a co-substrate and C. bombicola ATCC 22214 as the inoculum. Fermentation was performed on the 100-g scale and was optimized in terms of the ratio of substrates and the aeration rate using response surface methodology. The optimized SSF process (1:4 MOL:WOC mass ratio and 0.30 L kg-1 min-1 aeration rate), carried out under static conditions, was monitored for 10 days with a maximum SL yield of 0.179 g per g DM (dry matter), which corresponds to 19.1 g per 100 g of substrates (sum of the initial wet mass of WOC and MOL in the reactor). The effect of intermittent mixing on the process was also investigated. Mixing caused a 31% increase in SL production, with a total yield of 0.235 g per g DM, which corresponds to 25.1 g per 100 g of substrates. The Oxygen Uptake Rate (OUR) and the Cumulative Oxygen Consumption (COC) were used to monitor the biological activity of the fermentation processes. There were significant correlations between the SL yield and the oxygen and fats consumed. The SLs were characterized by FTIR and 1 H-NMR analysis.

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“…There are only a few reports tackling the mentioned operational strategies, but most of them are focused either on inoculation strategies (Cerda et al, 2016;Martinez-Ávila et al, 2017), operational configuration (Cheirsilp and Kitcha, 2015;Cerda et al, 2017a;Martinez-Ávila et al, 2018;Mejias et al, 2018), process control and/or reactor design (Astolfi et al, 2011;Biz et al, 2016;Martinez-Ávila et al, 2018). The last parameter is of great relevance, as it is the main factor hindering the development of large-scale processes (Mitchell et al, 2006;Thomas et al, 2013).…”

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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Production of pectinases by solid-state fermentation of a mixture of citrus waste and sugarcane bagasse in a pilot-scale packed-bed bioreactor

Cited by 107 publications

References 25 publications

Investigation of heat transfer in partially filled horizontal drums

Investigation of heat transfer in partially filled horizontal drums

Production of sophorolipids from winterization oil cake by solid-state fermentation: Optimization, monitoring and effect of mixing

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

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