Production and characterization of surface-active compounds from Gordonia amicalis

Jackisch-Matsuura, Ani Beatriz; Santos, Leonardo S.; Eberlin, Marcos N.; Faria, Andréia Fonseca de; Matsuura, Takeshi; Grossman, Matthew J.; Durrant, Lúcia Regina

doi:10.1590/s1516-89132014000100019

Cited by 12 publications

(10 citation statements)

References 20 publications

(16 reference statements)

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“…The production of surface-active compounds by Gordonia sp. has been associated with their ability to degrade the hydrophobic compounds [ 73 ]. Importantly, according to the current limit of circumscription of a prokaryotic species based on the 16S rDNA sequence [ 74 ], the isolate 25 could be a putative new species because percentage of 16S rDNA similarity against its closest relative is below 98.7%.…”

Section: Resultsmentioning

confidence: 99%

Marine Actinobacteria as a source of compounds for phytopathogen control: An integrative metabolic-profiling / bioactivity and taxonomical approach

et al. 2017

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Marine bacteria are considered as promising sources for the discovery of novel biologically active compounds. In this study, samples of sediment, invertebrate and algae were collected from the Providencia and Santa Catalina coral reef (Colombian Caribbean Sea) with the aim of isolating Actinobateria-like strain able to produce antimicrobial and quorum quenching compounds against pathogens. Several approaches were used to select actinobacterial isolates, obtaining 203 strains from all samples. According to their 16S rRNA gene sequencing, a total of 24 strains was classified within Actinobacteria represented by three genera: Streptomyces, Micromonospora, and Gordonia. In order to assess their metabolic profiles, the actinobacterial strains were grown in liquid cultures, and LC-MS-based analyses from ethyl acetate fractions were performed. Based on taxonomical classification, screening information of activity against phytopathogenic strains and quorum quenching activity, as well as metabolic profiling, six out of the 24 isolates were selected for follow-up with chemical isolation and structure identification analyses of putative metabolites involved in antimicrobial activities.

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Section: Resultsmentioning

confidence: 99%

Marine Actinobacteria as a source of compounds for phytopathogen control: An integrative metabolic-profiling / bioactivity and taxonomical approach

et al. 2017

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“…This characteristic is paramount in pollutant bioremediation, since it can aid in the bio stimulation or bio augmentation process, facilitating other microorganisms' physiological growth in the oil hydrocarbonates-contaminated medium (Deon et al, 2012). Jackisch-Matsuura et al (2014) cited the difficulty in finding filamentous fungi that are good producers of biosurfactants and have the ability to reduce surface tension, a fact observed in this study. On the other hand, bio emulsifier production by fungi and bacteria should be thoroughly studied, since they may be used in several applications, such as food processing and paint manufacturing industries, among others (Bezerra et al, 2012).…”

Section: Discussionmentioning

confidence: 77%

Potential biosurfactant producing endophytic and epiphytic fungi, isolated from macrophytes in the Negro River in Manaus, Amazonas, Brazil

Lima¹,

Pereira²,

Batista³

et al. 2016

Afr. J. Biotechnol.

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Endophytic and epiphytic fungi isolated from Eichhornia crassipes (Mart.) Solms and Cyperus ligularis L., macrophytes collected from oil-contaminated waters, were studied to assess their potential for producing biosurfactants; the most promising ones were identified by means of the rDNA region sequencing. In the selection, in the hydrocarbonate biodegradation activity, 2.6-indophenol (DCPIP) in oil-added Bushnell-Haas (BH) medium was the indicator used. The following tests were performed to ascertain the biosurfactant, bioemulsifier activity: emulsification measurement, drop-collapse, surface tension and production slope. Of the twenty fungi isolated, six promoted DCPIP discoloration. The isolate (S31) Phoma sp. showed emulsification of diesel (1.5 cm or 52%) and reduction of the surface tension of 51.03 mN/m water identified as Phoma sp. The other five fungi were identified as Rhizopus oryzae (S24), Fusarium sp. (S32, S33, S42, S46), presenting potential for biodegradation of hydrocarbons, as well. New studies on Phoma sp. (S31), including its cultivation in different carbon sources will be necessary to improve the production of secondary compounds involved in surface tension bioemulsification and reduction.

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“…The experimental photographs are presented in the supporting information. According to Jackisch-Matsuura et al, 37 emulsifying activity is considered high when the EH is greater than or equal to 1.8 cm, moderate when it is between 1 and 1.7 cm and low when it is less than 1 cm. It is evident from Table 7 that after half an hour of incubation, EH of Tween 40 and CP declined to less than half of their initial emulsification, from 5.1 to 0.8 cm and from 1.8 to 0.4 cm, respectively, while Triton X-100 remained stable for up to 1 h, EH decreasing after 24 h of incubation from 4.5 to 0.1 cm.…”

Section: Validation Of Proposed Models and Reuse Tests Under Optimal ...mentioning

confidence: 99%

Stabilization of water‐in‐oil emulsions using a wax ester synthesized by a new homemade heterogeneous biocatalyst

Lisboa

Rodrigues

Mattedi

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Cetyl palmitate is a wax ester naturally found in sperm whale spermaceti, and it is of importance in the cosmetics industry. International regulations prohibit the sale of sperm whale spermaceti, so it is now being replaced by pure cetyl palmitate obtained by a chemical route or from mixtures based on jojoba oil. Another alternative is to use an enzymatic route for wax ester synthesis. For such a purpose, a new heterogeneous biocatalyst was prepared by our research group via physical adsorption of Burkholderia cepacia lipase on aerogel modified with a protic ionic liquid (IB‐IL‐OPT). Its catalytic activity was compared with that of a biocatalyst prepared using a non‐chemically modified silica aerogel (IB‐Control). The objective of this work was to apply this homemade heterogeneous biocatalyst to cetyl palmitate synthesis via a direct esterification reaction in a solvent system and to test the final product as a stabilizing agent in water‐in‐oil emulsions. RESULTS IB‐IL‐OPT achieved maximum acid conversion of 95–100% under optimal experimental conditions established using a central composite rotational design: biocatalyst concentration of 14.8% (w/w), molar ratio of 1:1.3, 41 °C for 15 h of reaction under continuous mechanical agitation (200 rpm). The IB‐Control gave 58.8% acid conversion in similar conditions. IB‐IL‐OPT was successively reused for four cycles. The wax ester showed potential as a good emulsifier for virgin coconut oil. CONCLUSIONS The cetyl palmitate obtained via an enzymatic route without further purification showed good emulsifying potential, forming Pickering emulsions. This opens new perspectives for study and applications in the cosmetics industry. © 2022 Society of Chemical Industry (SCI).

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Production and characterization of surface-active compounds from Gordonia amicalis

Abstract: Two methods were used to make crude preparations of surface-active compounds (SACs) produced by

Cited by 12 publications

References 20 publications

Marine Actinobacteria as a source of compounds for phytopathogen control: An integrative metabolic-profiling / bioactivity and taxonomical approach

Marine Actinobacteria as a source of compounds for phytopathogen control: An integrative metabolic-profiling / bioactivity and taxonomical approach

Potential biosurfactant producing endophytic and epiphytic fungi, isolated from macrophytes in the Negro River in Manaus, Amazonas, Brazil

Stabilization of water‐in‐oil emulsions using a wax ester synthesized by a new homemade heterogeneous biocatalyst

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