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

Gudiña, Eduardo J.; Couto, Márcia R.; Silva, Soraia; Coelho, Elisabete; Coimbra, Manuel A.; Teixeira, J. A.; Rodrigues, L. R.

doi:10.3390/polym15010020

Cited by 10 publications

(3 citation statements)

References 46 publications

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“…Similarly, a three-fold increase in EPS yield was reported for a Halomonas xianhensis strain by optimizing culture conditions [124]. In addition, favoring the use of cheaper substrates has also been proposed as a means of bringing down the overall cost of production [125,126].…”

Section: Challenges For the Commercialization Of Marine Microbial Pol...mentioning

confidence: 86%

Marine Microbial Polysaccharides: An Untapped Resource for Biotechnological Applications

et al. 2023

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As the largest habitat on Earth, the marine environment harbors various microorganisms of biotechnological potential. Indeed, microbial compounds, especially polysaccharides from marine species, have been attracting much attention for their applications within the medical, pharmaceutical, food, and other industries, with such interest largely stemming from the extensive structural and functional diversity displayed by these natural polymers. At the same time, the extreme conditions within the aquatic ecosystem (e.g., temperature, pH, salinity) may not only induce microorganisms to develop a unique metabolism but may also increase the likelihood of isolating novel polysaccharides with previously unreported characteristics. However, despite their potential, only a few microbial polysaccharides have actually reached the market, with even fewer being of marine origin. Through a synthesis of relevant literature, this review seeks to provide an overview of marine microbial polysaccharides, including their unique characteristics. In particular, their suitability for specific biotechnological applications and recent progress made will be highlighted before discussing the challenges that currently limit their study as well as their potential for wider applications. It is expected that this review will help to guide future research in the field of microbial polysaccharides, especially those of marine origin.

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Section: Challenges For the Commercialization Of Marine Microbial Pol...mentioning

confidence: 86%

Marine Microbial Polysaccharides: An Untapped Resource for Biotechnological Applications

et al. 2023

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“…Also in this context, Cicatello, et al ( 2019) state that Penicillium chrisogenum is a promising bioemulsifier-producing microorganism (Surface tension 55 mN/m and emuslification index of 70%), as well as Phoma dimorpha (surface tension of 61.50 mN/m and emulsification index 83.3%) Luft, L. et al, (2021). liquor is a source of nitrogen rich in proteins, vitamins and amino acids that makes it a great nutritional component (GUDIÑA et al, 2023). In this context, in the present study it was possible to prove that Penicillium citrinum used whey as the main source of carbon and corn steep liquor as the main source of nitrogen capable of reducing surface tension to 47.5 mN/m and obtaining the emulsification index to 95.8% (Table 3).…”

Section: Emulsion Characterizationmentioning

confidence: 99%

Bioemulsifier production by Penicillium Citrinum UCP 1183 and microstructural characterization of emulsion droplets

Costa,

Souza,

Takaki

et al. 2023

Connecting Expertise Multidisciplinary Development for the Future

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Bioemulsifying compounds (BE) are biomolecules of high molecular weight produced by microorganisms and have as their main action the ability to emulsify and stabilize emulsions. In this context, the objective of this work was to investigate the potential of the fungus Penicillium citrinum in the production of bioemulsifier from substrates of renewable origin (milhocine and whey) and to characterize by optical microscopy the droplets of the emulsion formed. For this purpose, Penicillium citrinum was grown in sabouraud medium at 28ºC until the mycelial carpet was obtained. After growth, 20 8mm discs were used as inoculum in the production medium containing different concentrations of whey and cornocin determined by factorial design of 2 2. The statistical analysis of the residue concentrations was evaluated by the Pareto diagram, while the visualization of the microstructures of the emulsion droplets was visualized by optical microscopy with a 40x magnification. The results showed a maximum emulsification index of 95.8% and surface tension of 47.5 mN/m in condition 4 of the planning consisting of industrial residues (corn 5% and whey 5%). However, in all conditions of factorial design there was significant production of bioemulsifier. The Pareto diagram showed that the independent variable that most influenced the increase in the emulsification index was milhocin, followed by whey and its respective association. The type of emulsion formed was water-in-oil. The present study revealed that Penicillium citrinum has high biotechnological potential in the production of active biomolecule such as bioemulsifier (BE) produced from the metabolization of renewable industrial waste, suggesting potential use in cosmetics industries.

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“…In order to replace these compounds, attention is given to compounds that are kinder to the natural environment, such as bioemulsifiers (BEs), biosurfactants (BSs) and exopolysaccharides (EPSs) [ 7 ]. EPSs produced by microorganisms are compounds with significant potential in various commercial applications such as the emulsification of various hydrophobic substrates, food, or the pharmaceutical industry [ 8 , 9 ]. They have significant advantages when it comes to biodegradability and effectiveness [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Production and Characterisation of an Exopolysaccharide by Bacillus amyloliquefaciens: Biotechnological Applications

et al. 2023

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The Bacillus amyloliquefaciens RT7 strain was isolated from an extreme acidic environment and identified. The biodegradation capabilities of the strain using different carbon sources (glucose, oleic acid, Tween 80, PEG 200, and the combination of glucose–Tween 80) were evaluated via an indirect impedance technique. The glucose–Tween 80 combination was further studied using nuclear magnetic resonance (NMR). The exopolysaccharide (EPSRT7) that had been produced with the strain when biodegrading glucose–Tween 80 was isolated and characterised using different techniques (GC–MS, HPLC/MSMS, ATR–FTIR, TGA, and DSC), and its molecular weight was estimated. The results show that the average molecular weight of EPSRT7 was approximately 7.0794 × 104 Da and a heteropolysaccharide composed of mannose, glucose, galactose, and xylose (molar ratio, 1:0.5:0.1:0.1) with good thermostability. EPSRT7 showed good emulsifying activity against different natural oils and hydrocarbons at high concentrations (2 mg/mL) and at the studied pH range (3.1–7.2). It also presented good emulsifying activity compared to that of commercial emulsifiers. Lastly, EPSRT7 showed antioxidant capacity for different free radicals, a lack of cytotoxicity, and antioxidant activity at the cellular level. EPSRT7 has promising applications in bioremediation processes and other industrial applications.

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

Cited by 10 publications

References 46 publications

Marine Microbial Polysaccharides: An Untapped Resource for Biotechnological Applications

Marine Microbial Polysaccharides: An Untapped Resource for Biotechnological Applications

Bioemulsifier production by Penicillium Citrinum UCP 1183 and microstructural characterization of emulsion droplets

Production and Characterisation of an Exopolysaccharide by Bacillus amyloliquefaciens: Biotechnological Applications

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