João Carlos Teixeira Dias
State University of Santa Cruz
FermentationEnvironmental chemistryFosmidNuclear chemistryMetagenomicsBiodegradationMicroorganismChemistryEcologyTemperature gradient gel electrophoresisBioremediationYeastNitrileFood scienceBacteriaBiochemistryBotanyMicrocosmMicrobial population biologyBiologyMicrobiology
56Publications
14H-index
491Citations
Publications 55
Newest
#1Natielle Cachoeira Dotivo (UCSC: University of California, Santa Cruz)H-Index: 2
#2Rachel Passos Rezende (UCSC: University of California, Santa Cruz)H-Index: 16
Last. João Carlos Teixeira Dias (UCSC: University of California, Santa Cruz)H-Index: 14
view all 11 authors...
Traditional therapy for malignant neoplasms involving surgical procedures, radiotherapy and chemotherapy aims to kill neoplastic cells, but also affects normal cells. Therefore, exogenous proteases are the target of studies in cancer therapy, as they have been shown to be effective in suppressing tumors and reducing metastases. Pluronic F127 (F127) is a copolymer of amphiphilic blocks that has shown significant potential for drug administration, as it is capable of incorporating hydrophobic drug...
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#1Denise Sande Santos (UFMG: Universidade Federal de Minas Gerais)H-Index: 1
#2Rachel Passos Rezende (Federal University of Western Pará)
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Abstract In the present work we aimed to demonstrate the influence of inoculum starter in support high quality fermentation. Cocoa fermentations were performed in wooden boxes and eight yeasts strains were used in separated fermentations of fine cocoa, type Scavina, as starter inoculum. Temperature, pH, titirable acidity, reducing sugar and free amino acids were evaluated during or after fermentation. The influence of starters yeasts on the decrease of acidity, sugar concentration and free amino...
5 CitationsSource
#1Moara Silva CostaH-Index: 2
#2Rachel Passos Rezende (State University of Santa Cruz)H-Index: 16
view all 8 authors...
Microorganisms colonize the corals and produce compounds with interesting biological properties for biotechnology. The aim of the present study was to search for biocompounds with industrial potential through the cloning metagenomic DNA of symbionts the coral S. stellata in fosmid vector. The metagenomic library was analyzed using functional screening and sequencing via the Illumina MiSeq. Of the 3648 clones, eight were identified as proteolytic and six as amylolytic. The proteolytic clone, P07H...
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#2Manuela Ribeiro Passos (UCSC: University of California, Santa Cruz)H-Index: 1
Last. Regiane YatsudaH-Index: 11
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Abstract Dental caries is a multifactorial chronic-infection disease, which starts with a bacterial biofilm formation caused mainly by Streptococcus mutans. The use of probiotics has shown numerous health benefits, including in the fight against oral diseases. Strains of Lactobacillus fermentum have already shown probiotic potential against S. mutans, but there are still few studies. Thus, the aim of our study was to evaluate the antimicrobial activity of the inoculum and metabolites produced by...
8 CitationsSource
#1Ana C. S. Gonçalves (UCSC: University of California, Santa Cruz)H-Index: 4
#2Rachel Passos Rezende (UCSC: University of California, Santa Cruz)H-Index: 16
Last. Carlos Priminho Pirovani (UCSC: University of California, Santa Cruz)H-Index: 21
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Abstract Microorganisms native to mangroves are expected to contain enzymes capable of hydrolyzing different carbon sources. However, most of these microorganisms aren't cultivable; hence, alternative techniques as metagenomics are tools for studying and obtaining some of the natural genomes, genes and enzymes of biotechnological interest. The β-glucanase was produced using a metagenomic clone of mangrove sediments and detected by functional screening on carboxymethylcellulose substrate. The enz...
2 CitationsSource
Last. Sérgio Oliveira de Paula (UFV: Universidade Federal de Viçosa)H-Index: 20
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Aerobic granules are large, compact microbial aggregates when compared to flocculent sludge, and they can be used in wastewater treatment. The application of aerobic granular sludge in bioreactors for the treatment of industrial effluents is still considered innovative and has been the subject of several recent studies. In the present study, 19 microbial isolates from mesophilic aerobic granules, obtained from a previous study, were evaluated in co-aggregation tests. The extracellular polymeric ...
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#1Eric de Lima Silva Marques (UCSC: University of California, Santa Cruz)H-Index: 6
#2Gislaine S. Silva (UCSC: University of California, Santa Cruz)H-Index: 5
Last. Rachel Passos Rezende (State University of Santa Cruz)
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Restricted contact with the external environment has allowed the development of microbial communities adapted to the oligotrophy of caves. However, nutrients can be transported to caves by drip water and affect the microbial communities inside the cave. To evaluate the influence of aromatic compounds carried by drip water on the microbial community, two limestone caves were selected in Brazil. Drip-water-saturated and unsaturated sediment, and dripping water itself, were collected from each cave...
7 CitationsSource
#1Eric de Lima Silva Marques (UCSC: University of California, Santa Cruz)H-Index: 6
#2João Carlos Teixeira Dias (State University of Santa Cruz)H-Index: 14
Last. Rachel Passos Rezende (State University of Santa Cruz)
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The mineralogical composition of caves makes the environment ideal for inhabitation by microbes. However, the bacterial diversity in the cave ecosystem remains largely unexplored. In this paper, we described the bacterial community in an oxic chamber of the Sopradeira cave, an iron-rich limestone cave, in the semiarid region of Northeast Brazil. The microbial population in the cave samples was studied by 16S rDNA next-generation sequencing. A type of purple sulfur bacteria (PSB), Chromatiales, w...
4 CitationsSource
#1Gislaine S. SilvaH-Index: 5
#2Rachel Passos Rezende (State University of Santa Cruz)
Last. Rosenira Serpa da CruzH-Index: 13
view all 7 authors...
Abstract Although different types of biodiesel are marketed worldwide, studies on their environmental impact are scarce. Therefore, we selected pure biodiesels (B100) from rapeseed (BR), sunflower (BF), and soybean (BS) to mimic their contamination of sandy loam soil and then studied their biodegradation by the soil microcosms. All the biodiesel samples presented significant values (p
2 CitationsSource