Production of biofuels from soybean straw and hull hydrolysates obtained by subcritical water hydrolysis

Vedovatto, Felipe; Bonatto, Charline; Bazoti, Suzana F.; Venturin, Bruno; Alves, Sérgio L.; Kunz, Airton; Steinmetz, R. L. R.; Treichel, Helen; Mazutti, Márcio A.; Zabot, Giovani L.; Tres, Marcus V.

doi:10.1016/j.biortech.2021.124837

Cited by 49 publications

(8 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, Wickerhamomyces sp. UFFS-CE-3.1.2 was able to consume 10 g/L of glucose on a 1 2 dilution of these hydrolysates [56]. Table 6 summarizes results in published works that used soybean hydrolysate or related materials, for comparative purposes.…”

Section: Separate Saccharification and Fermentationmentioning

confidence: 99%

Multi-Response Optimization of Thermochemical Pretreatment of Soybean Hulls for 2G-Bioethanol Production

Gil Rolón,

Leonardi,

Bolzico

et al. 2023

Fermentation

View full text Add to dashboard Cite

Soybean is a major crop used in the production of human food. The soybean hull (SH) is also known as the seed coat and it constitutes about 5–8% of the total seed on a dry weight basis, depending on the variety and the seed size. Dilute sulfuric acid was employed for the thermochemical pretreatment of SH prior to enzymatic saccharification and alcoholic fermentation. Empirical modeling of response surface, severity factor and multi-response desirability function methodology, were used to perform the process optimization. Temperature, acid concentration and reaction time were defined as operational variables, while furfural, 5-hydroxymethylfurfural and solubilized hemicellulose and cellulose were defined as response variables. Mathematical models satisfactorily described the process and optimal conditions were found at 121 °C; 2.5% w/v H2SO4 and 60 min. More than 80% and 90% of hemicelluloses and celluloses, respectively, were able to solubilize at this point. The fermentation performance of an industrial Saccharomyces cerevisiae strain was also evaluated. The glucose available in the hydrolysates was completely consumed in less than 12 h, with an average ethanol yield of 0.45 gethanol/gglucose. Thus, the thermochemical conditioning of SH with dilute sulfuric acid is a suitable operation for 2G-bioethanol production.

show abstract

Section: Separate Saccharification and Fermentationmentioning

confidence: 99%

Multi-Response Optimization of Thermochemical Pretreatment of Soybean Hulls for 2G-Bioethanol Production

Gil Rolón,

Leonardi,

Bolzico

et al. 2023

Fermentation

View full text Add to dashboard Cite

show abstract

“…Nowadays, the concept of bioenergy through the production of renewable fuels and the use of biomass to generate energy has proved to be an interesting alternative aiming to reduce society's energy dependence on petrochemical fuels [110][111][112]. Biofuels such as bioethanol, biodiesel and biogas, and biomass have emerged not only as an alternative energy source but also in relation to environmental issues.…”

Section: Biofuelsmentioning

confidence: 99%

Opportunities and Challenges of Plant Bioactive Compounds for Food and Agricultural-Related Areas

Santos¹,

Wancura²,

Oro³

et al. 2022

Phyton

View full text Add to dashboard Cite

The growing development of biological products highlights the social and environmental responsibility that several industrial companies are facing in recent years. In this context, the advancement of bioprocessing as an alternative for exploring the potential of ecologically based products, especially in biofuels, food, and agro-industrial business, exposes the rational efficiency of the application of renewable sources in different industrial segments. Industries strongly associated with food production concentrate large amounts of wastes rich in bioactive compounds. A range of highly effective technologies has been highly explored to recover large concentrations of prominent compounds present in these materials. The advances in this scenario assurance value addition to these by-products, in addition to highlighting their various technological applications, considering the biorefinery and ecologically based production concepts. Accordingly, this review article described a detailed and systematic approach to the importance of using bioactive compounds and exploring the main sources of these elements. Also, some recent and innovative research that has achieved encouraging results was highlighted. Furthermore, the study included the main extraction technologies that have been investigated as a strategy of prospecting the application of bioactive compounds and optimizing the processes for obtaining natural compounds from plant sources. Finally, future outlooks were presented to contribute to the innovative opportunities and applicability of highly promising technologies and manipulations of bioactive compounds from a range of perspectives.

show abstract

“…It is well-established that a pretreatment process can facilitate biomass saccharification by solubilizing hemicellulose and/or lignin and disrupting the crystalline structure of the cellulose to increase conversion yields by allowing more enzyme accessibility to the surface of the cellulose (Cao et al, 2015;Kim et al, 2016). Previous studies with different pretreatments such as supercritical water (Vedovatto et al, 2021a;Vedovatto et al, 2021b), ball milling (Liu et al, 2016), alkaline and acid pretreatments (Qing et al, 2017) were shown to disrupt the crystalline structure of soybean straw and enhance its enzymatic hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of cellulase activity by liquid hydrolysates from hydrothermally pretreated soybean straw

Kim¹,

Ji²,

Jackson³

et al. 2022

Front. Chem. Eng.

View full text Add to dashboard Cite

The one-pot biomass conversion process is a promising strategy to minimize potential product loss and reduce processing costs. However, this strategy has technical limitations due to the inhibitory effects of biomass components like lignin as well as the generated inhibitors (e.g., furans, phenols) during biomass processing. In this study, the inhibitory effects of liquid hydrolysates formed by hydrothermal pretreatment of soybean straw with either sodium hydroxide (NaOH) or hydrogen peroxide (H2O2) on cellulolytic enzyme activity were investigated. Hydrothermal pretreatment of soybean straw (10% w/v) was carried out with either sodium hydroxide (1% v/v) or hydrogen peroxide (1% v/v) at 121°C for 60 min to evaluate the effect of water-soluble inhibitors released from soybean pretreatment on cellulolytic enzyme activity. The fraction of cellulose in pretreated solids (1% w/v glucan) was enzymatically hydrolyzed for 72 h with 45 IU/g glucan (corresponding to 25 mg enzyme protein/g glucan) in the presence of either buffer or liquid hydrolysate generated from the pretreatments. Hydrolysis of NaOH and H2O2 pretreated solids resulted in 57% and 39% of glucose yields in buffer, respectively. In the presence of the liquid hydrolysates, NaOH and H2O2 pretreated biomass showed 20% and 30% glucose yield, respectively, indicating the enzyme suppression by inhibitors in the liquid hydrolysates. Of the enzyme activities in hydrolysates tested, NaOH hydrolysate showed a higher inhibitory effect on enzyme activities (mainly β-glucosidase) compared to H2O2 liquid, where enzyme deactivation has a first-order correlation and the manner in which the vacuum-filtered inhibitors were generated from pretreated soybean straw.

show abstract

Production of biofuels from soybean straw and hull hydrolysates obtained by subcritical water hydrolysis

Cited by 49 publications

References 42 publications

Multi-Response Optimization of Thermochemical Pretreatment of Soybean Hulls for 2G-Bioethanol Production

Multi-Response Optimization of Thermochemical Pretreatment of Soybean Hulls for 2G-Bioethanol Production

Opportunities and Challenges of Plant Bioactive Compounds for Food and Agricultural-Related Areas

Inhibition of cellulase activity by liquid hydrolysates from hydrothermally pretreated soybean straw

Contact Info

Product

Resources

About