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Highly thermostable exopolysaccharide produced by the moderately halophilic bacterium isolated from a man-made young salt lake in Romania

100%

Cojoc R., Merciu S., Oancea P., Pincu E., Dumitru L., Enache M.

Polish Journal of Microbiology

2009

tom 58

nr 4

289-294

Halophilic bacterial strains isolated from a man-made salt lake in Romania produce a specific exopolysaccharide. This product is synthesized under both static and stirring conditions, and the yield of this exoploysaccharide depends on the composition of the culture medium. The highest amount of polymer was obtained in the presence of casamino acids and yeast extract, under stirring conditions. This polymer has high thermostability, with a melting point at 207°C. The melting process is associated with the thermal degradation of the compound. This polymer is characterized by maximum absorbtion at 260 nm and fluorescence emission at 530 nm. The FT-IR analysis of the polymer revealed the presence of a saccharide structure and of amine and sulfate groups throughout the sugar backbone.

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Isolation, identification and extracellular enzymatic activity of culturable extremely halophilic archaea and bacteria of IncheBoroun wetland

100%

Rasooli M., Amoozegar M. A., Sepahy A. A., Babavalian H., Tebyanian H.

International Letters of Natural Sciences

2016

tom 56

Extremely halophilic diversity of IncheBroun wetland located in the north of Iran was investigated by using culture-dependent methods. Sampling was carried out in May and September 2014. In each sampling 4 distinct regions of wetland were analyzed by using complex media like MGM, JCM168, MH1 and an alkaliphilic medium containing 23% salts. After incubation at 40˚C, a total of 406 isolates and 2.1 × 106 CFU/ml were obtained in culture media. Among them 361 isolates were obtained from MGM and 39 isolates from JCM 168, 3 isolates from MH1 and 3 isolates from the alkaliphilic media. Initial morphological, biochemical and physiological tests were performed. Production of 4 hydrolytic enzymes by 45 selected strains was assayed qualitatively. A total of 38, 19 and 6 strains were able to produce lipase, DNase and amylase activity. Protease activity was not observed among strains. As total 45 strains were selected randomly and phylogenetic analysis of 16S rRNA was performed for them. Among selected strains 40 isolated strians belonged to Haloarchaea and were belonged to the genera: Haloarcula(30%), Halorubrum(27.5%), Haloferax(17.5%), Halobellus (10%), Halogeometricum(5.2%), Halobacterium(2.6%), Halolamina(2.6%), Halorhabdus (2.6%) and Halostagnicola (2.6%). Haloarcula and Halorubrum were the dominant populations. A total of 5 strains belonged to domain of Bacteria and were similar to members of Rhodovibrio (40%), Pseudomonas (40%) and Salicola (20%).

Rola bakterii halofilnych w procesie dekarboksylacji histydyny w rybach solonych

80%

Peconek J., Szczawinski J., Fonberg-Broczek M., Sawilska-Rautenstrauch D., Windyga B.

Roczniki Państwowego Zakładu Higieny

1997

tom 48

nr 2

139-143

Badano zdolność wytwarzania histaminy w pożywkach bakteryjnych, do których dodawano homogenaty ze śledzi solonych poddanych soleniu mocnemu i przechowywaniu przez 2 miesiące w temp. 200C. Ze śledzi solonych dostępnych w sprzedaży detalicznej izolowano szczepy bakterii halofilnych, a następnie określano w warunkach modelowych ich zdolności do dekarboksylacji histydyny.

Ograniczanie wyników

1 International Letters of Natural Sciences

1 Polish Journal of Microbiology

1 Roczniki Państwowego Zakładu Higieny

1 Amoozegar M. A.

1 Babavalian H.

1 Cojoc R.

1 Dumitru L.

1 Enache M.

1 Fonberg-Broczek M.

1 Merciu S.

1 Oancea P.

1 Peconek J.

1 Pincu E.

1 Rasooli M.

1 Sawilska-Rautenstrauch D.

1 Sepahy A. A.

1 Szczawinski J.

1 Tebyanian H.

1 Windyga B.

1 2016

1 2009

1 1997

Wyniki wyszukiwania

Highly thermostable exopolysaccharide produced by the moderately halophilic bacterium isolated from a man-made young salt lake in Romania

Isolation, identification and extracellular enzymatic activity of culturable extremely halophilic archaea and bacteria of IncheBoroun wetland

Rola bakterii halofilnych w procesie dekarboksylacji histydyny w rybach solonych