Bioemulsifier production by an oleaginous yeastRhodotorula glutinis IIP-30

Johnson, Von; Singh, Manjeet; Saini, Virender S.; Adhikari, Dilip K.; Sista, V. R.; Yadav, N. K.

doi:10.1007/bf01023172

Cited by 51 publications

(24 citation statements)

References 3 publications

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“…The ability of the strain RG1 to degrade n-alkanes producing biosurfactants might represent, in our opinion, an interesting finding because there are few studies detailing methods for obtaining biosurfactants from R. glutinis strains and those that do exist mention different carbon sources, such as glucose, starch, or soybean oil (Johnson et al, 1992;Oloke and Glick, 2005).…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic analysis and characterization of an alkane-degrading yeast strain isolated from oil-polluted soil

Csutak¹,

Vassu²

2014

Turk J Biol

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IntroductionThe yeast strains belonging to the Candida, Pichia, Rhodotorula, and Yarrowia genera are successfully used in biotechnology domains related to the food and chemical industries, therapeutics, and bioremediation. The process of bioremediation is based on the ability of microorganisms to assimilate and biodegrade petroleum or crude oil by using the hydrocarbon compounds as main carbon sources in specific metabolic pathways (Vidali, 2001). The final products of this metabolism are sometimes represented by biosurfactants, surface-active molecules produced on the surface of cells whose diverse structure allows them to reduce surface and interfacial tension and to mediate the assimilation of hydrophobic substrates, including hydrocarbons, at the surface of cells (Muthusamy et al., 2008;Kaya et al., 2014). Therefore, the development of knowledge concerning the structure and production of biosurfactants is important for the improvement of bioremediation technologies in oil recovery, agriculture, cosmetics, therapeutics, and microbial lipase production

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Section: Discussionmentioning

confidence: 99%

Phylogenetic analysis and characterization of an alkane-degrading yeast strain isolated from oil-polluted soil

Csutak¹,

Vassu²

2014

Turk J Biol

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“…Johnson 49 reported the influence of the nitrogen source in the production of a biosurfactant by the yeast Rhodotorula glutinis IIP-30. The author revealed that the use of potassium nitrate presented the best result in comparison to other nitrogen sources (ammonium sulphate and urea).…”

Section: Nitrogen Sourcementioning

confidence: 99%

Biosurfactants from Yeasts: Characteristics, Production and Application

Amaral

Coelho

Marrucho

et al. 2010

Advances in Experimental Medicine and Biology

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Biosurfactants are surface-active compounds from biological sources, usually extracellular, produced by bacteria, yeast or fungi. Research on biological surfactant production has grown significantly due to the advantages they present over synthetic compounds such as biodegradability, low toxicity, diversity of applications and functionality under extreme conditions. Although the majority of microbial surfactants have been reported in bacteria, the pathogenic nature of some producers restricts the wide application of these compounds.A growing number of aspects related to the production of biosurfactants from yeasts have been the topic of research during the last decade.

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“…Johnson 61 relatou a influência da fonte de nitrogênio na produção de biossurfactante pela levedura Rhodotorula glutinis IIP-30, tendo o nitrato de potássio apresentado o melhor desempenho em relação às outras fontes utilizadas (sulfato de amônio e uréia).…”

Section: Fonte De Nitrogêniounclassified

Produção de biossurfactante por levedura

Fontes¹,

Amaral²,

Coelho³

2008

Quím. Nova

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Recebido em 18/8/07; aceito em 24/4/08; publicado na web em 16/10/08 BIOSURFACTANTS PRODUCTION BY YEASTS. Biosurfactants are molecules extracellularly produced by bacteria, yeast and fungi that have significant interfacial activity properties. This review focuses on relevant parameters that influence biosurfactant production by yeasts. Many works have investigated the optimization of yeast biosurfactant production, mainly within the last decade, revealing that the potential of such microorganisms is not well explored in the industrial field. The main points to increase the process viability lays on the reduction of the production costs and enhancement of biosynthesis efficiency through optimization the culture conditions (carbon and nitrogen source, pH, aeration, speed agitation) and the selection of inexpensive medium components.Keywords: biosurfactants; yeast; surface-active compounds. introduçãoVários microorganismos possuem capacidade de produzir moléculas com atividade interfacial. 1 Nas últimas décadas tem-se aumentado o interesse em identificar e isolar novos microorganismos produtores de moléculas tenso-ativas que apresentem boas caracterís-ticas surfactantes, como baixa concentração micelar crítica (CMC), baixa toxicidade, alta atividade de emulsificação, dentre outras. 2 A maioria dos biossurfactantes microbianos relatados na literatura é de origem bacteriana. As bactérias produtoras mais reportadas são dos gêneros: Pseudomonas sp., Acinetobacter sp., Bacillus sp. e Arthrobacter sp.. 3 Entretanto, a grande maioria dos biossurfactantes de origem bacteriana não é adequada para utilização na indústria alimentícia, devido a sua possível natureza patogênica. 4 As leveduras também têm sido estudadas para a produção de emulsificadores. Entre as leveduras, espécies de Candida e Yarrowia têm sido largamente estudadas e empregadas com sucesso na produção de biossurfactanes. A Tabela 1 apresenta as espécies de levedura mais estudadas e os respectivos biossurfactantes produzidos.Uma grande vantagem do uso de leveduras reside no status GRAS (generally regarded as safe) que muitas delas apresentam, como Yarrowia lipolytica, Saccharomyces cerevisiae e Kluyveromyces lactis. Organismos com status GRAS não apresentam riscos de toxicidade e patogenicidade, o que permite sua utilização para aplicações nas indústrias de alimentos e farmacêutica. 5 Alguns microorganismos podem produzir biossurfactantes quando crescem em diferentes substratos, variando desde carboidratos até hidrocarbonetos. O uso de diferentes fontes de carbono altera a estrutura dos biossurfactantes produzidos e, conseqüentemente, suas propriedades emulsificantes. Estas mudanças podem ser benéficas quando se desejam propriedades específicas para uma aplicação direcionada. 26 Diversos são os estudos realizados por vários autores 18,27,28 na produção de biossurfactantes, envolvendo propriedades físico-químicas.A maioria dos biossurfactantes é geralmente produzida quando as culturas alcançam a fase estacionária de crescimento. 29 Porém algumas espécies podem...

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Bioemulsifier production by an oleaginous yeastRhodotorula glutinis IIP-30

Cited by 51 publications

References 3 publications

Phylogenetic analysis and characterization of an alkane-degrading yeast strain isolated from oil-polluted soil

Phylogenetic analysis and characterization of an alkane-degrading yeast strain isolated from oil-polluted soil

Biosurfactants from Yeasts: Characteristics, Production and Application

Produção de biossurfactante por levedura

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