Valorisation of sawdust through the combined microwave-assisted hydrothermal pre-treatment and fermentation using an oleaginous yeast

Longanesi, Luca; Bouxin, Florent P.; Fan, Jiajun; Auta, Hadiza; Gammons, Richard; Budarin, Vitaily L.; Vriza, Aikaterini; Clark, James H.; Chuck, Christopher J.

doi:10.1007/s13399-020-00757-3

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…Whereas, the cold flow property of biodiesel is enhanced by the presence of lower level of total unsaturated fatty acids (8.22%) [41,73]. The composition of the fatty acid methyl ester obtained in this study was comparable to the transesterifed fatty acid profiles of food waste hydrolysate, cassava starch hydrolysate and rapeseed oil [65,58,74,75]. Further, relative composition of the total saturated fatty acids of DWHH are found to be higher (20.58%) (Fig.…”

Section: Gc-ms Analysis For Fatty Acid Compositionmentioning

confidence: 50%

“…This is in parallel with the cell growth exhibiting the maximum sugar uptake rate (0.019 g/L/h) and sugar utilization efficiency of about 94.55% (59.185 g/L to 3.225 g/L) at the end of fermentation as compared with the other fermentation sets. The total lipid yield is directly correlated with the DCW of the oleaginous yeast, where the overall highest lipid content is achieved for more cells with similar lipid content [58]. The lipid concentration (Fig.…”

Section: Influence Of Carbon Source On Lipid Productionmentioning

confidence: 94%

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Bioprocessing of fermentable sugars derived from water hyacinth into microbial lipids and single cell proteins by oleaginous yeast Rhodosporidium toruloides NCIM 3547

Alankar

Nithianandam

Rastogi

et al. 2021

Biomass Conv. Bioref.

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In this study we employed microwave-acid pretreatment for water hyacinth (WH) to obtain liquid hydrolysate that contains sugars derived from holocellulosic components of biomass for further oleaginous yeast fermentation. In order to remove the inhibitors such as furans after acid treatment, detoxification of hydrolysate was done and we compared the efficiency of this step with non-detoxified hydrolysate towards capability of the Rhodosporidium toruloides NCIM 3547 (an oleaginous yeast) to produce microbial lipid and single cell protein. The results indicated that the reducing sugar concentration was found to be higher in non-detoxified hydrolysate (65.41 g/L) than detoxified one (59.18 g/L).When the non-detoxified liquid hydrolysate was supplemented with yeast extract as a complex organic source for R. toruloides, resulted in a maximum lipid yield of about 0.813 ± 0.041 (g/g) and 53.60 ± 2.68 (g/g) of single cell protein content with 0.038 g/L/d of protein productivity. Two kinetic models, hybrid Logistic-Monod and Luedeking-Piret were employed to assess the microbial growth and the substrate utilization and were found to be in well agreement with the experimental data with a coefficient of determination (R 2 ) value ranging from 0.95 -0.99 thereby demonstrating the efficiency of the hydrolysate supplemented media. Further, GC-MS analysis of transesterified lipids revealed the presence of various FAME (fatty acid methyl esters) and also the presence of increased levels of total saturated fatty acids (35.03%) advocates its high potential in biodiesel production. This study demonstrates the feasibility of sustainable valorization of WH derived liquid hydrolysate towards a greener biorefinery framework.

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Section: Gc-ms Analysis For Fatty Acid Compositionmentioning

confidence: 50%

Section: Influence Of Carbon Source On Lipid Productionmentioning

confidence: 94%

Bioprocessing of fermentable sugars derived from water hyacinth into microbial lipids and single cell proteins by oleaginous yeast Rhodosporidium toruloides NCIM 3547

Alankar

Nithianandam

Rastogi

et al. 2021

Biomass Conv. Bioref.

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“…Sawdust, as a wood waste product, consists mainly of the natural polymers cellulose, hemicellulose, and lignin. During the solvothermal treatment, depolymerization and solubilization processes take place, which produce mono/oligosaccharides that can serve as reductants due to their free aldehyde groups [52,53]. Sawdust is a cheap and ubiquitous waste material and thus has been researched as sorbent in many cases [14,17,54,55].…”

Section: Synthesis Of the New Materialsmentioning

confidence: 99%

Synthesis of a Magnetic Nanostructured Composite Sorbent Only from Waste Materials

Bunge,

Leoștean,

Turcu

2023

Materials

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Water pollution is a big problem for the environment, and thus depollution, especially by adsorption processes, has garnered a lot of interest in research over the last decades. Since sorbents would be used in large quantities, ideally, they should be cheaply prepared in scalable reactions from waste materials or renewable sources and be reusable. Herein, we describe a novel preparation of a range of magnetic sorbents only from waste materials (sawdust and iron mud) and their performance in the adsorption of several dyes (methylene blue, crystal violet, fast green FCF, and congo red). The preparation is performed in a hydrothermal process and is thus easily scalable and requires little sophisticated equipment. The magnetic nanostructured materials were analyzed using FTIR, VSM, SEM/EDX, XRD, and XPS. For crystal violet as a pollutant, more in-depth adsorption studies were performed. It was found that the best-performing magnetic sorbent had a maximum sorption capacity of 97.9 mg/g for crystal violet (methylene blue: 149.8 mg/g, fast green FCF: 52.2 mg/g, congo red: 10.5 mg/g), could be reused several times without drastic changes in sorption behavior, and was easily separable from the solution by simply applying a magnet. It is thus envisioned to be used for depollution in industrial/environmental applications, especially for cationic dyes.

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Biomass Processing via Microwave Treatment

Rosa

Cravotto

Leonelli

2021

Biomass Valorization

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Valorisation of sawdust through the combined microwave-assisted hydrothermal pre-treatment and fermentation using an oleaginous yeast

Abstract: This is a repository copy of Valorisation of sawdust through the combined microwaveassisted hydrothermal pre-treatment and fermentation using an oleaginous yeast.

Cited by 4 publications

References 32 publications

Bioprocessing of fermentable sugars derived from water hyacinth into microbial lipids and single cell proteins by oleaginous yeast Rhodosporidium toruloides NCIM 3547

Bioprocessing of fermentable sugars derived from water hyacinth into microbial lipids and single cell proteins by oleaginous yeast Rhodosporidium toruloides NCIM 3547

Synthesis of a Magnetic Nanostructured Composite Sorbent Only from Waste Materials

Biomass Processing via Microwave Treatment

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