- Aquaculture disease management and microbiota
- Vibrio bacteria research studies
- Aquaculture Nutrition and Growth
- Food Safety and Hygiene
- Fecal contamination and water quality
- Cassava research and cyanide
- Water Quality and Pollution Assessment
- Salmonella and Campylobacter epidemiology
- Pharmaceutical and Antibiotic Environmental Impacts
- Fish biology, ecology, and behavior
- Microplastics and Plastic Pollution
- Environmental Sustainability and Education
- Child Nutrition and Water Access
- Identification and Quantification in Food
- Wastewater Treatment and Reuse
- Marine Bivalve and Aquaculture Studies
- Moringa oleifera research and applications
- Essential Oils and Antimicrobial Activity
- Geography and Environmental Studies
- Coastal and Marine Management
- Bacterial biofilms and quorum sensing
- Enzyme Production and Characterization
- Antibiotic Resistance in Bacteria
- Adsorption and biosorption for pollutant removal
- Psidium guajava Extracts and Applications
Centre for Environment, Fisheries and Aquaculture Science
2022
Universidade Federal do Ceará
2010-2020
Universidad del Mar
2005-2020
Instituto de Pesca
1996-2017
Universidade de Fortaleza
2010-2013
United Food and Commercial Workers
2002-2012
Universidade Federal do Recôncavo da Bahia
2012
National Council for Scientific and Technological Development
2009
State University of Vale do Acaraú
2002-2006
Universidade Federal do Maranhão
1998
Antibacterial effects of aqueous and ethanolic extracts seeds moringa (Moringa oleifera) pods soursop (Annona muricata) in the concentration 1:5 1:10 volumes 50, 100, 150 200 µL were examined against Staphylococcus aureus, Vibrio cholerae, Escherichia coli (isolated from organism aquatic environment) Salmonella Enteritidis. activity (inhibition halo > 13 mm) S. V. cholerae E. isolated whiteleg shrimp, Litopenaeus vannmaei, was detected moringa. tilapiafish, Oreochromis niloticus,...
To evaluate the antibacterial effect of aqueous and ethanolic moringa leaf extracts (Moringa oleifera) on growth gram-positive negative bacteria. Paper disks were soaked with 100, 200, 300 400 μL extract at 20 g/180 mL 10 g/190 mL. All tested against Escherichia coli (ATCC25922), Staphylococcus aureus (ATCC25923), Vibrio parahaemolyticus, Enterococcus faecalis (ATCC29212), Pseudomonas aeruginosa (ATCC27853), Salmonella enteritidis (IH) Aeromonas caviae. The susceptibility tests performed...
Guava leaf tea of Psidium guajava Linnaeus is commonly used as a medicine against gastroenteritis and child diarrhea by those who cannot afford or do not have access to antibiotics. This study screened the antimicrobial effect essential oils methanol, hexane, ethyl acetate extracts from guava leaves. The were tested diarrhea-causing bacteria: Staphylococcus aureus, Salmonella spp. Escherichia coli. Strains that included isolates seabob shrimp, Xiphopenaeus kroyeri (Heller) laboratory-type...
Antimicrobial susceptibility pattern was determined in 100 strains of Vibrio isolated from the Litopenaeus vannamei shrimp and identified phenotypically. A high antibiotic-resistance index (75%) observed, with following phenotypic profiles: monoresistance (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>n</mml:mi><mml:mo>=</mml:mo><mml:mn>42</mml:mn></mml:math>), cross-resistance to β -lactams...
Out of the twenty-four samples shrimp and fish muscle used for this study, twelve were collected near a large marine sewer waste disposal, 3 km off coast Fortaleza (Brazil) isolation E. coli. Other at Mucuripe fresh market (Fortaleza, Brazil) Staphylococcus aureus. Ethanol, water acetone-diluted extracts guava papaya leaf sprouts tested on bacteria in order to verify their microbicidal potential. The coli strains trials rated LT positive. (Carica Linn) showed no activity while sprout...
To evaluate the antioxidant, antibacterial and bacterial cell agglutination activities of hexane (Hex) 70% ethanol (70% EtOH) extracts two species red seaweeds Pterocladiella capillacea (P. capillacea) Osmundaria obtusiloba. In vitro antioxidant activity was determined by DPPH radical scavenging assay, ferric-reducing power ferrous ion chelating β-carotene bleaching assay total phenolic content quantification. Antimicrobial tested using method disc diffusion on Mueller-Hinton medium. The...
Ten out of fifty fresh and refrigerated samples shrimp (Litopenaeus vannamei) collected from retailers in Natal (Rio Grande do Norte, Northeastern Brazil) tested positive for Vibrio parahaemolyticus. The Kanagawa test multiplex PCR assays were used to detect TDH TRH hemolysins the tdh, trh tlh genes, respectively. All strains Kanagawa-negative tlh-positive. Antibiotic susceptibility testing was done seven antibiotics by agar diffusion technique. Five (50%) presented multiple antibiotic...
The aim of this study was to investigate the presence antibiotic resistant Staphylococcus aureus strains in fish stalls and hands nasal oral cavities handlers Mucuripe Fish Market, Fortaleza, Ceará, Brazil. All S. isolates were Ampicillin 44 % multi-drug resistant.
This study investigated the presence and antibiotic resistance of Salmonella spp. in a shrimp farming environment Northeast Region Brazil. Samples water sediments from two farms rearing freshwater-acclimated Litopenaeus vannamei were examined for . Afterwards, isolates serotyped, antimicrobial was determined by disk diffusion method, plasmid curing performed resistant isolates. A total 30 (16.12%) 186 confirmed to be spp., belonging five serovars: S serovar Saintpaul, Infantis, Panama,...
The decolorization of solutions containing the textile reactive dye Orange II by bacteria Geobacillus stearothermophilus (UCP 986) was investigated. experiments were statistically evaluated two-level-four factor (2 4 ) full factorial design, as aeration, azo concentration, inoculum size, and culture media. best results with Luria Bertani (LB) medium under efficiency meant that 96—98% removed after 24 h incubation. LB in color reduction due to a co-metabolic process. Sulphanilic acid...
The presence of Vibrio spp. and Salmonella in crabs marketed at the Bezerra de Menezes Ave., Fortaleza, State Ceará, Brazil, was assessed between February May, 2003. number individuals sampled each one fifteen weekly samplings ranged four eight. Seven strains Salmonella, from different samplings, were identified, being five them identified as serotype S. Senftenberg two Poona. All sensitive to tested anti-microbial drugs, with exception tetracycline nalidixic acid, for which an intermediary...
Thirty water samples were collected, at two week intervals, from the estuary of River Cocó. The aim was to characterize presence, distribution and types Aeromonas spp, in Cocó, Ceara, Brazil (03º46'28.83''S e 38º26'36.52''S). identified 19 (63%) analyzed by plating CFU counts. Presence/absence tests positive for 11 (37%) resulting detection a total 23 (77%) samples. counts varied < 10 1.4 x 10(4) mL-1 . From isolated strains seven species identified: A. caviae (29/69), veronii bv. sobria...
This study aimed to test the susceptibility of Escherichia coli strains isolated from water, bottom sediments and individuals cultivated in shrimp farm ponds, antibiotics belonging different families, namely B-Lactams: Imipenem (IPM; 10 micro g), Ampicillin (AMP; Cephalothin (CEP; 30 Cefoxitin (FOX; Ceftriaxone (CRO; g); Tetracycline: Tetracycline (TCY; Aminoglycosides: Gentamicin (GEN; Amikacin (AMK; Chloramphenicol: Chloramphenicol (CHO; Fluoroquinolones: Ciprofloxacin (CIP; 5 Nitrofurans:...
The enzymatic characterization of vibrios has been used as a virulence indicator sanitary interest. objective this study was to determine the profile Vibrio parahaemolyticus strains (n = 70) isolated from Crassostrea rhizophorae oysters. were examined for presence gelatinase (GEL), caseinase (CAS), elastase (ELAS), phospholipase (PHOS), lipase (LIP), amilase (AML) and DNase. All enzymes, except elastase, detected in more than 60% strains. most recurrent profiles AML + DNase PHOS GEL LIP 16;...
Marine invertebrates are capable of synthesizing bioactive compounds, which may be beneficial to human health. The aim this study was evaluate the antioxidant, hemolytic, antimicrobial and cytotoxic activities crude extract (70% EtOH), dichloromethane (DCM), ethyl acetate (EtOAc), aqueous (Aq) fractions marine zoanthid Palythoa caribaeorum. phenolic compound contents extract, DCM, EtOAc Aq were 12.33, 18.17, 10.53, 3.18 mg GAE per gram, respectively. DPPH radical scavenging activity showed...
Over the last 30 years, a number of Vibrio species found in aquatic environment have been indicated as cause disease human beings. vulnificus is an emergent pathogen, invasive and lethal marine bacterium related to wound infection held accountable for gastroenteritis primary septicemia. It occurs quite frequently organisms, mainly mollusks. This study aimed at isolating identifying strains V. based upon analysis twenty samples seabob shrimp, Xiphopenaeus kroyeri (Heller), purchased Mucuripe...
The presence of faecal contamination and pathogenic microorganisms in samples dry wet sand collected from three major beaches Fortaleza, Ceará State, Brazil: (Praia do Mucuripe, Praia Futuro Caça e Pesca), during the period May 1999 to January 2000 was evaluated. Pesca had highest incidence E. coli (56%) followed by Mucuripe (28%) (16%). In sand, results were 48%, 28% 24% for Pesca, respectively. Only two Futuro, one another positive Salmonella. V. parahaemolyticus isolated four (two...
This study was aimed at evaluating the microbiological quality of mangrove oysters (Crassostrea rhizophorae), collected a natural oyster bed in estuary Cocó river (Fortaleza, Ceará, Brazil). MPN values were used for estimating total (TC) and fecal (FC) coliforms Enterococcus spp. TC FC whole muscle intervalve liquid ranged from <1.8 to >1,600/g 920/g, respectively. The estimates between <3.0 >1,100/g. No correlation found physico-chemical parameters (temperature, salinity pH) surrounding...