Biosynthesis and physicochemical characterization of a bacterial polysaccharide/polyamide blend, applied for microfluidics study in porous media

Bajestani, Maryam Ijadi; Mousavi, Seyyed Mohammad; Jafari, Arezou; Shojaosadati, Seyed Abbas

doi:10.1016/j.ijbiomac.2016.11.048

Cited by 11 publications

(5 citation statements)

References 36 publications

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“…The absorbance peak at 3500 cm −1 represents the polymeric OH group, which was abundant in biopolymers comprising both polysaccharides and proteins. The stretching vibrations of the 500–1200 cm −1 region are relevant to COC, CO, CH, and CC bonds in polysaccharides 26,27 . According to Figure 2a,b and the FTIR data performed by Kacurakova et al, 27 it is found that the produced biopolymers has similar structure of exo‐polysaccharides.…”

Section: Resultsmentioning

confidence: 70%

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Performance evaluation of produced biopolymers by native strains on enhanced oil recovery

Kaboli

Jafari

Azarhava

et al. 2022

J of Applied Polymer Sci

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Bio(polymer) flooding is one of the most promising strategy used to recover additional oil from mature reservoirs. Bio(polymers) decrease the mobility ratio, improving the sweep efficiency of injected fluid and consequently, increasing oil recovery. Therefore, in this research seven unknown strains were isolated from the soil of the Masjed-Soleiman oil field, and then studied for biopolymer production. After biopolymer production and viscosity tests, two of the best strains were selected. Their performances were evaluated in the enhanced oil recovery in micromodel media. The main purpose of this research is to identify the biopolymer-producing species, but the effective parameters in the production of more biopolymers and enhanced oil recovery are also evaluated and optimized. The experiments optimized by the Design Expert software by the general factorial method. The parameters evaluated include different types of strains, biopolymer concentration (three levels of 500, 5500, and 10,500 ppm) and the salinity of the injected fluid (three levels of 0%, 0.5%, and 10%). The best performance in oil recovery for both strains of TMU57 and TMU59 are considered in the biopolymer concentration of 10,500 ppm and the concentration of NaCl equal to 10 wt%. The values of the ultimate oil recovery in these conditions with the strains of TMU57 and TMU59 were 47% and 63%, respectively.

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Section: Resultsmentioning

confidence: 70%

“…The stretching vibrations of the 500-1200 cm À1 region are relevant to C O C, C O, C H, and C C bonds in polysaccharides. 26,27 According to Figure 2a,b and the FTIR data performed by Kacurakova et al, 27 it is found that the produced biopolymers has similar structure of exo-polysaccharides.…”

Section: Ftir Analysismentioning

confidence: 89%

Performance evaluation of produced biopolymers by native strains on enhanced oil recovery

Kaboli

Jafari

Azarhava

et al. 2022

J of Applied Polymer Sci

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“…Besides the protein antigens, bacteria possess non-protein antigens, such as lipid [29,30] or carbohydrate [31][32][33][34], to influence disease progression and severity. The biosynthesis of carbohydrates or lipids is a complex, multi-enzymatic process [35,36] and not directly template-driven as is the case for proteins, thereby resulting in a challenge to obtain pure, defined carbohydrates and lipids. However, based on previous studies, anti-Id Abs can display internal images that imitate the immunogenic epitopes or conformations of non-protein and protein antigens [16,17].…”

Section: Discussionmentioning

confidence: 99%

Anti-Idiotype Vaccine Provides Protective Immunity Against Vibrio Harveyi in Grouper (Epinephelus Coioides)

2019

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Since anti-idiotype antibodies (anti-Id Abs) can display internal images similar to the epitopes of the original antigens, we aimed to produce an effective vaccine based on anti-Id Abs to protect grouper from Vibrio harveyi. Anti-Id IgG showing V. harveyi-like internal images was produced from rabbits immunized with the Id portion of grouper anti-V. harveyi antibodies and its Fab portion, anti-Id IgG (Fab), was then prepared to use as the anti-Id vaccine. The resulting anti-Id IgG (Fab) was intraperitoneally injected twice at a 21-day interval into grouper to evaluate its ability to induce effective anti-V. harveyi immunity and protection, in comparison with inactivated V. harveyi bacteria. We found that administration of grouper with anti-Id IgG (Fab) resulted in enhanced V. harveyi-specific serum titers, as well as lymphocyte proliferation. In addition, three weeks after boosting, 90% (18/20) of fish immunized with anti-Id IgG (Fab) survived at least 28 days after a lethal challenge of the heterologous, virulent strain of V. harveyi. The capability of this anti-Id IgG (Fab) to imitate the epitopes of V. harveyi antigens and effectively induce protective immunity would be advantageous for its application in developing an efficacious vaccine against V. harveyi for future farm use in fish.

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“…The nature of microbial pathogens and γ-PGA anions determine its antimicrobial potential. These factors facilitate γ-PGA binding with cell wall components leading to cell disruption (Bajestani et al, 2018;Ajayeoba et al, 2019). The pathogenic bacteria protect themselves against antimicrobials by inducing stress responses.…”

Section: γ-Pga Applications As Antimicrobial Agentmentioning

confidence: 99%

Poly (γ) glutamic acid: a unique microbial biopolymer with diverse commercial applicability

Elbanna,

Alsulami,

Neyaz

et al. 2024

Front. Microbiol.

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Microbial biopolymers have emerged as promising solutions for environmental pollution-related human health issues. Poly-γ-glutamic acid (γ-PGA), a natural anionic polymeric compound, is composed of highly viscous homo-polyamide of D and L-glutamic acid units. The extracellular water solubility of PGA biopolymer facilitates its complete biodegradation and makes it safe for humans. The unique properties have enabled its applications in healthcare, pharmaceuticals, water treatment, foods, and other domains. It is applied as a thickener, taste-masking agent, stabilizer, texture modifier, moisturizer, bitterness-reducing agent, probiotics cryoprotectant, and protein crystallization agent in food industries. γ-PGA is employed as a biological adhesive, drug carrier, and non-viral vector for safe gene delivery in tissue engineering, pharmaceuticals, and medicine. It is also used as a moisturizer to improve the quality of hair care and skincare cosmetic products. In agriculture, it serves as an ideal stabilizer, environment-friendly fertilizer synergist, plant-growth promoter, metal biosorbent in soil washing, and animal feed additive to reduce body fat and enhance egg-shell strength.

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Biosynthesis and physicochemical characterization of a bacterial polysaccharide/polyamide blend, applied for microfluidics study in porous media

Cited by 11 publications

References 36 publications

Performance evaluation of produced biopolymers by native strains on enhanced oil recovery

Performance evaluation of produced biopolymers by native strains on enhanced oil recovery

Anti-Idiotype Vaccine Provides Protective Immunity Against Vibrio Harveyi in Grouper (Epinephelus Coioides)

Poly (γ) glutamic acid: a unique microbial biopolymer with diverse commercial applicability

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