4 documents found, page 1 of 1
The complete genome sequence of Chromobacterium violaceum reveals remarkable an...
Vasconcelos, Ana Tereza; De-Almeida, Darcy Fontoura; Hungría, Mariangela; Guimarães, Cláudia Teixeira; Antônio, Regina VasconcellosChromobacterium violaceum is one of millions of species of free-living microorganisms that populate the soil and water in the extant areas of tropical biodiversity around the world. Its complete genome sequence reveals (i) extensive alternative pathways for energy generation, (ii) ≈500 ORFs for transport-related proteins, (iii) complex and extensive systems for stress adaptation and motility, and (iv) wide-spre...
Pretreatment on Anaerobic Sludge for Enhancement of Biohydrogen Production from...
Lamaison, Franciele do Carmo; Fragata, Rafael; Antônio, Regina Vasconcellos; Amante, Edna Regina; Reginatto, ValeriaMethods for the enrichment of an anaerobic sludge with H2-producing bacteria have been compared by using cassava processing wastewater as substrate.The sludge was submitted to three different pretreatments: 1) heat pretreatment by boiling at 98 °C for 15 min., 2) heat pretreatment followed by sludge washout in a Continuous Stirring Tank Reactor (CSTR) operated at a dilution rate (D) of 0.021 h-1, and 3) sludge ...
Biohydrogen production by a mixed photoheterotrophic culture obtained from a Wi...
Antônio, Regina Vasconcellos
.
Pitlovanciv, Ana Kelly; Caris, Margot Érika; Porto, Luismar Marques; Pedrosa, Rozangela Curi; Antônio, Regina VasconcellosCultivation conditions for pigment production by Chromobacterium violaceum. Chromobacterium violaceum is a beta proteobacterium, gram-negative, facultative anaerobe, found in soil, riverbanks and waters of tropical and subtropical regions all around the world. The species produces, through secondary metabolism, several indole pigments derived from tryptophan. Violacein and desoxyviolacein are the most abundant ...