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1.
Indian J Exp Biol ; 2003 Sep; 41(9): 1030-45
Article in English | IMSEAR | ID: sea-60293

ABSTRACT

Industrial and environmental biotechnology are going to new paths, resulting in processes with "clean technologies", with the maximum production and the less residues. Technologies of remediation and bioremediation are continuously being improved using genetically modified microorganisms or those naturally occurring, to clean residues and contaminated areas from toxic organics. Bioremediation of soils, water and marine environments has many advantages but at the same time it is a challenge for the researchers and engineers. Consequently, it is extremely important to carry out feasibility study based on pilot-testing before starting a remediation project in order to determine the best conditions for the process. The article presents a brief review of bioremediation including the description of the different methods applied to soil and industrial wastes, and, finally, some experiences of solid-state fermentation in relation to bioremediation.


Subject(s)
Bacteria/genetics , Biodegradation, Environmental , Biotechnology/methods , Environmental Pollution/prevention & control , Fermentation , Fungi/genetics , Industrial Waste/analysis , Soil Pollutants/metabolism , Waste Management/methods , Yeasts/genetics
2.
Braz. arch. biol. technol ; 42(3): 263-76, set. 1999. tab
Article in English | LILACS | ID: lil-285075

ABSTRACT

O ácido cítrico é o ácido mais produzido em termos de tonagem e é extensivamente utilizado pelas indústrias alimentícia e farmacêutica. É produzido principalmente por fermentaçäo submersa utilizando o fungo Aspergillus niger e leveduras do gênero Candida sp. à partir de diferentes forntes de carbono, como a glicose e meios à base de amido. No entanto, outras técnicas de fermentaçäo, e.g. fermentaçäo no estado sólido e em superfície, e fontes alternativas de carbono tem sido intensamente estudadas mostrando grande perspectivas para o processo. O presente trabalho apresenta um resumo dos últimos avanços sobre a produçäo do ácido cítrico, descrevendo de maneira sucinta os trabalhos mais recentes, descrevendo microorganismos, técnicas de produçäo e substratos empregados, etc


Subject(s)
Citric Acid/chemical synthesis , Biotechnology , Food Technology , Aspergillus niger , Biotechnology , Fermentation
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