Cost-effective rhamnolipid production by Burkholderia thailandensis E264 using agro-industrial residues

Correia, Jéssica; Gudiña, Eduardo J.; Lazar, Zbigniew; Janek, Tomasz; Teixeira, J. A.

doi:10.1007/s00253-022-12225-1

Cited by 19 publications

(9 citation statements)

References 41 publications

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“…Similar to the results herein reported for R. viscosum CECT908, concentrations of CSL higher than 1–2% were detrimental to EPS production, which was attributed to its high lactic acid content [ 12 , 19 , 39 ]. According to the HPLC analysis, the CSL used in this work contained 123 ± 18 g lactic acid/L, which is in agreement with previous reports [ 43 ].…”

Section: Resultssupporting

confidence: 91%

“…CSL, the main residue of corn starch production, was evaluated as an alternative nitrogen source for EPS production by R. viscosum . CSL is rich in proteins, amino acids, vitamins and trace elements, making it a great nutritional supplement for numerous biotechnological processes and an inexpensive substrate when compared with yeast extract [ 12 , 19 , 42 , 43 ]. The CSL used in this work also contained glucose (28 ± 2 g/L) and fructose (29 ± 1 g/L).…”

Section: Resultsmentioning

confidence: 99%

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Sustainable Exopolysaccharide Production by Rhizobium viscosum CECT908 Using Corn Steep Liquor and Sugarcane Molasses as Sole Substrates

et al. 2022

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Microbial exopolysaccharides (EPS) are promising alternatives to synthetic polymers in a variety of applications. Their high production costs, however, limit their use despite their outstanding properties. The use of low-cost substrates such as agro-industrial wastes in their production, can help to boost their market competitiveness. In this work, an alternative low-cost culture medium (CSLM) was developed for EPS production by Rhizobium viscosum CECT908, containing sugarcane molasses (60 g/L) and corn steep liquor (10 mL/L) as sole ingredients. This medium allowed the production of 6.1 ± 0.2 g EPS/L, twice the amount produced in the standard medium (Syn), whose main ingredients were glucose and yeast extract. This is the first report of EPS production by R. viscosum using agro-industrial residues as sole substrates. EPSCSLM and EPSSyn exhibited a similar carbohydrate composition, mainly 4-linked galactose, glucose and mannuronic acid. Although both EPS showed a good fit to the Herschel–Bulkley model, EPSCSLM displayed a higher yield stress and flow consistency index when compared with EPSSyn, due to its higher apparent viscosity. EPSCSLM demonstrated its potential use in Microbial Enhanced Oil Recovery by enabling the recovery of nearly 50% of the trapped oil in sand-pack column experiments using a heavy crude oil.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Sustainable Exopolysaccharide Production by Rhizobium viscosum CECT908 Using Corn Steep Liquor and Sugarcane Molasses as Sole Substrates

et al. 2022

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“…Among the glycolipids, rhamno and sophoro lipids are the main representatives 56 . Rhamnolipid comprises two rhamnose sugar moieties linked to mono or di β-hydroxy decanoic acid 57 . Applications of rhamnolipids in medical and pharma industries are well known 58 , besides their use as a pesticide recently 59 .…”

Section: Discussionmentioning

confidence: 99%

Larvicidal and anti-termite activities of microbial biosurfactant produced by Enterobacter cloacae SJ2 isolated from marine sponge Clathria sp.

Harikrishnan,

Sudarshan,

Sivasubramani

et al. 2023

Sci Rep

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The widespread use of synthetic pesticides has resulted in a number of issues, including a rise in insecticide-resistant organisms, environmental degradation, and a hazard to human health. As a result, new microbial derived insecticides that are safe for human health and the environment are urgently needed. In this study, rhamnolipid biosurfactants produced from Enterobacter cloacae SJ2 was used to evaluate the toxicity towards mosquito larvae (Culex quinquefasciatus) and termites (Odontotermes obesus). Results showed dose dependent mortality rate was observed between the treatments. The 48 h LC50 (median lethal concentration) values of the biosurfactant were determined for termite and mosquito larvae following the non-linear regression curve fit method. Results showed larvicidal activity and anti-termite activity of biosurfactants with 48 h LC50 value (95% confidence interval) of 26.49 mg/L (25.40 to 27.57) and 33.43 mg/L (31.09 to 35.68), respectively. According to a histopathological investigation, the biosurfactant treatment caused substantial tissue damage in cellular organelles of larvae and termites. The findings of this study suggest that the microbial biosurfactant produced by E. cloacae SJ2 is an excellent and potentially effective agent for controlling Cx. quinquefasciatus and O. obesus.

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“…Frontiers in Chemistry frontiersin.org 2022) observed a high rhamnolipid production of 269 mg L -1 in bioreactor fermentation. However, the rhamnolipids produced in the CSL + OMW medium showed weak emulsifying activity, which can be explained by the different relative abundance between mono-rhamnolipid and dirhamnolipid in the product (Correia et al, 2022).…”

Section: Glycolipids Produced From Other Secondary Materialsmentioning

confidence: 98%

Sustainable biosurfactant production from secondary feedstock—recent advances, process optimization and perspectives

Miao,

To,

Siddiqui

et al. 2024

Front. Chem.

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Biosurfactants have garnered increased attention lately due to their superiority of their properties over fossil-derived counterparts. While the cost of production remains a significant hurdle to surpass synthetic surfactants, biosurfactants have been anticipated to gain a larger market share in the coming decades. Among these, glycolipids, a type of low-molecular-weight biosurfactant, stand out for their efficacy in reducing surface and interfacial tension, which made them highly sought-after for various surfactant-related applications. Glycolipids are composed of hydrophilic carbohydrate moieties linked to hydrophobic fatty acid chains through ester bonds that mainly include rhamnolipids, trehalose lipids, sophorolipids, and mannosylerythritol lipids. This review highlights the current landscape of glycolipids and covers specific glycolipid productivity and the diverse range of products found in the global market. Applications such as bioremediation, food processing, petroleum refining, biomedical uses, and increasing agriculture output have been discussed. Additionally, the latest advancements in production cost reduction for glycolipid and the challenges of utilizing second-generation feedstocks for sustainable production are also thoroughly examined. Overall, this review proposes a balance between environmental advantages, economic viability, and societal benefits through the optimized integration of secondary feedstocks in biosurfactant production.

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Cost-effective rhamnolipid production by Burkholderia thailandensis E264 using agro-industrial residues

Cited by 19 publications

References 41 publications

Sustainable Exopolysaccharide Production by Rhizobium viscosum CECT908 Using Corn Steep Liquor and Sugarcane Molasses as Sole Substrates

Sustainable Exopolysaccharide Production by Rhizobium viscosum CECT908 Using Corn Steep Liquor and Sugarcane Molasses as Sole Substrates

Larvicidal and anti-termite activities of microbial biosurfactant produced by Enterobacter cloacae SJ2 isolated from marine sponge Clathria sp.

Sustainable biosurfactant production from secondary feedstock—recent advances, process optimization and perspectives

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