Kinetic model of cellulose degradation using simultaneous saccharification and fermentation

Sakimoto, Kouki; Kanna, Machi; Matsumura, Yukihiko

doi:10.1016/j.biombioe.2017.02.016

Cited by 33 publications

(21 citation statements)

References 13 publications

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“…The presence of cellobiose was observed and remained constant and equal to 5 g.L -1 throughout the fermentation process for all the fermentation media, not being consumed by the microorganism. This sugar was possibly obtained by the partial hydrolysis of cellulose present in the rice bran (Sakimoto et al, 2017) and was also observed by Arokiasamy et al (2016).…”

Section: Batch Fermentationsupporting

confidence: 76%

Evaluation of Rice Bran as a Supplement for Production of Bioethanol by Saccharomyces cerevisiae

et al. 2019

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There is an increase in researches to create alternative fuels through the use of biomass and agroindustrial lignocellulosic residues. The present study proposes the use of rice bran as source of energy with the potential to enhance bioethanol production. Using different concentrations of cells (1-5 g.L-1) and rice bran (2.5-7.5 g.L-1) with Saccharomyces cerevisiae, a factorial design 2 2 was carried out. The nutrient source provided by rice bran affects the substrate conversion in product (Y p/s) response in a quadratic form, but its linear form showed no significant effect (α = 0.05). When it comes to means, the best results were obtained for 12 h and for fermentation medium 2 (23.320 g.L-1 of ethanol), which contained the highest rice bran concentration and the lowest initial cell concentration. Medium 3, consisting of 2.5 g.L-1 and 5 g.L-1 of rice bran and cells, respectively, showed the lowest K s (4.434 g.L-1).

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Section: Batch Fermentationsupporting

confidence: 76%

Evaluation of Rice Bran as a Supplement for Production of Bioethanol by Saccharomyces cerevisiae

et al. 2019

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“…Referring to aerobic conditions, the cumulative volume of CO 2 produced during composting is used as an index of microbial assimilation and organic fraction mineralization (Balaguer et al, 2015(Balaguer et al, , 2016. CO 2 produced by bioplastics during biodegradation is compared with a blank, composed of mature compost plus a positive material, generally cellulose (Tabasi and Ajji, 2015), for which biodegradability has already been assessed (Sakimoto et al, 2017;Zhao et al, 2016) and assumed to be complete (Zhao et al, 2017). The measurement of CO 2 in gaseous emissions from the process can be carried out with different equipment: the cumulative measurement respirometry (CMR) and the gravimetric measurement respirometry (GMR) (Kijchavengkul and Auras, 2008).…”

Section: Co 2 and Ch 4 Measurementsmentioning

confidence: 99%

Methodologies to assess biodegradation of bioplastics during aerobic composting and anaerobic digestion: A review

2019

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Bioplastics are emerging on the market as sustainable materials which rise to the challenge to improve the lifecycle of plastics from the perspective of the circular economy. The article aims at providing a critical insight of research studies carried out in the last 20 years on the degradation of bioplastics under aerobic composting and anaerobic digestion conditions. It mainly focuses on the various and different methodologies which have been proposed and developed to monitor the process of biodegradation of several bioplastic materials: CO 2 and CH 4 measurements, mass loss and disintegration degree, spectroscopy, visual analysis and scanning electron microscopy. Moreover, across the wide range of studies, the process conditions of the experimental setup, such as temperature, test duration and waste composition, often vary from author to author and in accordance with the international standard followed for the test. The different approaches, in terms of process conditions and monitoring methodologies, are pointed out in the review and highlighted to find significant correlations between the results obtained and the experimental procedures. These observed correlations allow critical considerations to be reached about the efficiency of the methodologies and the influence of the main abiotic factors on the process of biodegradation of bioplastics.

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“…In its essence, the proposed SSF model is a coupling of the enzymatic hydrolysis of cellulose and the fermentation of glucose to ethanol by microorganisms. More recent contributions are made by Shadbahr et al (2017), Sakimoto et al (2017), and Singh et al (2018). While Shadbahr et al (2017) consider the SSF of cellulose, Singh et al (2018) consider the SSF of starch.…”

Section: Simultaneous Saccharification and Fermentationmentioning

confidence: 99%

“…The conversion rate r 1 of cellulose to cellobiose by the exo-and endo-glucanases is given by (Prunescu and Sin, 2013;Sakimoto et al, 2017;Shadbahr et al, 2017):…”

Section: Simultaneous Saccharification and Fermentationmentioning

confidence: 99%

Modeling Biowaste Biorefineries: A Review

Buck

Polańska

Impe

2020

Front. Sustain. Food Syst.

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The biorefining of biowaste is an upcoming novel strategy, but is mostly still in its conceptual phase. Biowaste biorefineries would allow (rural) communities to convert their biowaste into value-added biofuels, biochemical compounds, and fertilizers. Several different types of biowaste biorefineries have already been developed, but little to none of these designs are already commercially exploited. Their further development and commercial implementation is hampered by the high investment costs and risks, little trusts in its novel technologies, expected yields and profits, and operating reliability. Modeling these integrated processes, together with their supply chains, would allow for optimizing the considered biorefinery designs and coincidently speeding up the R&D-process. The optimized biorefinery designs and supply chains would additionally embed an increased amount of trust in potential investors in terms of the economic sustainability of the considered novel processes. Therefore, in this publication, a summary of existing biorefinery models is presented, together with supply chain network models. The discussed biorefinery models are categorized according to the conversion platform they use, being thermochemical, biological, or hybrid ones. Furthermore, the overall inherent advantages and disadvantages of all conversion platforms are summarized and a scope of further research needs is presented.

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Kinetic model of cellulose degradation using simultaneous saccharification and fermentation

Cited by 33 publications

References 13 publications

Evaluation of Rice Bran as a Supplement for Production of Bioethanol by Saccharomyces cerevisiae

Evaluation of Rice Bran as a Supplement for Production of Bioethanol by Saccharomyces cerevisiae

Methodologies to assess biodegradation of bioplastics during aerobic composting and anaerobic digestion: A review

Modeling Biowaste Biorefineries: A Review

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