2017
DOI: 10.4025/actascibiolsci.v39i1.33842
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<b>Biosurfactants produced by <i>Microbacterium</i> sp., isolated from aquatic macrophytes in hydrocarbon-contaminated area in the Rio Negro, Manaus, Amazonas

Abstract: ABSTRACT. Endophytic bacteria isolated from Eichhornia crassipes (Mart) Solms., collected in oil contaminated wastewater of effluent generated by Petrobras refinery in Manaus were investigated to determine their potential for producing biosurfactants. Assay with 2.6-dichlorophenol indophenol (DCPIP) indicator to verify hydrocarbon biodegradation activity; oil emulsification test; drop-collapse method; surface tension and growth curve of biosurfactant production. The M87 Microbacterium sp. strain chosen for thi… Show more

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Cited by 7 publications
(9 citation statements)
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“…On the other hand, high molecular weight biosurfactants are mostly effective emulsifiers [47,48]. The biosurfactants, as well as microorganisms that produce them, play a special role in the bioremediation of environments contaminated with petroleum hydrocarbons [32]. The remediation of such environments is limited due to the high hydrophobicity of this type of contaminants and their low solubility in water.…”
Section: Mechanisms Enhancing Microbe-assisted Phytodegradationmentioning
confidence: 99%
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“…On the other hand, high molecular weight biosurfactants are mostly effective emulsifiers [47,48]. The biosurfactants, as well as microorganisms that produce them, play a special role in the bioremediation of environments contaminated with petroleum hydrocarbons [32]. The remediation of such environments is limited due to the high hydrophobicity of this type of contaminants and their low solubility in water.…”
Section: Mechanisms Enhancing Microbe-assisted Phytodegradationmentioning
confidence: 99%
“…isolated from Lolium perenne [29], Bacillus subtilis K1 strain isolated from the roots of banyan fig (Ficus benghalensis L.) [48] and Microbacterium sp. M87 derived from the water hyacinth tissues (Eichhor nia crassipes) [32]. Research by Wu et al [79] proved that Pseudomonas aeruginosa L10 strain, isolated from the roots of the reed (Phrag mites australis), producing a biosurfactant which effectively reduces surface tension, shows high degradation activity towards various hydrocarbons.…”
Section: Mechanisms Enhancing Microbe-assisted Phytodegradationmentioning
confidence: 99%
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“…Onde, possuem propriedades como emulsificação, separação, umedecimento, solubilização, demulsificação, inibição de corrosão, redução de viscosidade de líquidos e redução das tensões superficiais e interfaciais de sistemas líquidos (OLIVEIRA, 2010). Por apresentarem estas propriedades, eles podem ser utilizados na agricultura, indústria farmaceutica, higiene pessoal e produtos de processamento de alimentos, entre outros (SOURAV et al, 2015;LIMA et al, 2017). Além disso, apresentam vantagens sobre os surfactantes sintéticos, considerando sua biodegradabilidade e baixa toxicidade (LIMA et al, 2017).…”
Section: Introductionunclassified
“…O cultivo é visto em todo o país, porém é perceptível que seu maior cultivo ocorre no norte e nordeste do Brasil, principalmente em todo o território nordestino, onde se encontram os principais produtores de castanha de caju. A cajucultura vem ocasionando muito interesse, devido a sua grande geração de renda e de empregos, além da sua diversificada aplicação na indústria alimentícia(HUO, 2015;LIMA, 2017).O caju, muito embora seja confundido como fruto do cajueiro, ele é na verdade um pseudofruto, o pedúnculo O LCC é um produto natural não-isopropênico constituído por uma mistura de lipídios alquilfenóis substituídos, sendo eles cardanol, cardol, metil-cardol e ácido anacárdico. Eles são uma rica fonte de fenóis, produzidos devido aos estresses sofridos pela planta.…”
unclassified