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| Registros recuperados: 13 | |
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| Oliveira,Cláudia S.; Caldeira,Cleópatra A. S.; Diniz-Sousa,Rafaela; Romero,Dolores L.; Marcussi,Silvana; Moura,Laura A.; Fuly,André L.; Carvalho,Cicília de; Cavalcante,Walter L. G.; Gallacci,Márcia; Pai,Maeli Dal; Zuliani,Juliana P.; Calderon,Leonardo A.; Soares,Andreimar M.. |
| Abstract Background: Cnidarians produce toxins, which are composed of different polypeptides that induce pharmacological effects of biotechnological interest, such as antitumor, antiophidic and anti-clotting activities. This study aimed to evaluate toxicological activities and potential as antitumor and antiophidic agents contained in total extracts from five cnidarians: Millepora alcicornis, Stichodactyla helianthus, Plexaura homomalla, Bartholomea annulata and Condylactis gigantea (total and body wall). Methods: The cnidarian extracts were evaluated by electrophoresis and for their phospholipase, proteolytic, hemorrhagic, coagulant, fibrinogenolytic, neuromuscular blocking, muscle-damaging, edema-inducing and cytotoxic activities. Results: All... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caribbean sea cnidarians; Bioprospection; Antiophidic; Antitumor; Natural products. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992018000100313 |
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| Carvalho,Daniel Diego Costa; Mello,Sueli Corrêa Marques de; Lobo Júnior,Murillo; Geraldine,Alaerson Maia. |
| The objective of this work was to evaluate isolates of Trichoderma harzianum regarding biocontrol of common bean seed-borne pathogens, plant growth promotion, and rhizosphere competence. Five isolates of T. harzianum were evaluated and compared with commercial isolate (Ecotrich), Carboxin+Thiram, and an absolute control. Bean seeds of the cultivar Jalo Precoce, contaminated with Aspergillus, Cladosporium, and Sclerotinia sclerotiorum, were microbiolized with antagonists, and seed health tests were carried out. Isolates were evaluated on autoclaved substrate and in field conditions. Ten days after sowing (DAS), plant length was measured. To test rhizosphere competence, isolates were applied in boxes containing autoclaved washed sand, and root colonization... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Sclerotinia sclerotiorum; Biological control; Bioprospection; Seed pathology. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000800006 |
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| Vieira,Felipe do Nascimento; Jatobá,Adolfo; Mouriño,José Luiz Pedreira; Vieira,Eduardo Alano; Soares,Mariana; Silva,Bruno Corrêa da; Seiffert,Walter Quadros; Martins,Maurício Laterça; Vinatea,Luis Alejandro. |
| The objective of this work was to isolate strains of lactic acid bacteria with probiotic potential from the digestive tract of marine shrimp (Litopenaeus vannamei), and to carry out in vitro selection based on multiple characters. The ideotype (ideal proposed strain) was defined by the highest averages for the traits maximum growth velocity, final count of viable cells, and inhibition halo against nine freshwater and marine pathogens, and by the lowest averages for the traits duplication time and resistance of strains to NaCl (1.5 and 3%), pH (6, 8, and 9), and biliary salts (5%). Mahalanobis distance (D²) was estimated among the evaluated strains, and the best ones were those with the shortest distances to the ideotype. Ten bacterial strains were isolated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litopenaeus vannamei; Acid lactic bacteria; Bioprospection; Pathogen inhibition. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800030 |
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| Oliveira,Saulo Alves Santos de; Hohenfeld,Camila Santiago; Santos,Vanderlei da Silva; Haddad,Fernando; Oliveira,Eder Jorge de. |
| The objective of this work was to identify sources of resistance to dry root rot induced by Fusarium sp. in cassava accessions. A macroconidial suspension (20 µL) of 11 Fusarium sp. isolates was inoculated in cassava roots, from 353 acessions plus seven commercial varieties. Ten days after inoculation, the total area colonized by the pathogen on the root pulp was evaluated by digital image analysis. Cluster analysis revealed the presence of five groups regarding resistance. The root lesion areas ranged from 18.28 to 1,096.07 mm² for the accessions BGM 1518 and BGM 556, respectively. The genotypes BGM 1042, BGM 1552, BGM 1586, BGM 1598, and BGM 1692 present the best agronomical traits. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta; Bioprospection; Germplasm bank; Screening for resistance. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001000014 |
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| GOMES,ANDREA C.S.M; SANTOS,SAMUEL R. DOS; RIBEIRO,MAYCON C.; CRAVO,PEDRO V.L.; VIEIRA,JOSÉ DANIEL G.; SOUZA,KEILI M.C. DE; AMARAL,ANDRE C.. |
| ABSTRACT In the present work, different Brazilian biomes aiming to identify and select cyclodextrin glycosyltransferase-producer bacteria are explored. This enzyme is responsible for converting starch to cyclodextrin, which are interesting molecules to carry other substances of economic interest applied by textile, pharmaceutical, food, and other industries. Based on the enzymatic index, 12 bacteria were selected and evaluated, considering their capacity to produce the enzyme in culture media containing different starch sources. It was observed that the highest yields were presented by the bacteria when grown in cornstarch. These bacteria were also characterized by sequencing of the 16S rRNA region and were classified as Bacillus, Paenibacillus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyclodextrin glycosyltransferase; Cyclodextrin; Brazilian biodiversity; Bioprospection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401473 |
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| Costa-Neto,Eraldo M.. |
| Animals have been used as medicinal resources for the treatment and relieve of a myriad of illnesses and diseases in practically every human culture. Although considered by many as superstition, the pertinence of traditional medicine based on animals cannot be denied since they have been methodically tested by pharmaceutical companies as sources of drugs to the modern medical science. The phenomenon of zootherapy represents a strong evidence of the medicinal use of animal resources. Indeed, drug companies and agribusiness firms have been evaluating animals for decades without paying anything to the countries from where these genetic resources are found. The use of animals' body parts as folk medicines is relevant because it implies additional pressure over... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethnozoology; Zootherapy; Bioprospection; Sustainability. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000100004 |
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| Almeida,Paula Zaghetto de; Pereira,Marita Gimenez; Carvalho,Caio Cesar de; Heinen,Paulo Ricardo; Ziotti,Luciana Sobrani; Messias,Josana Maria; Jorge,João Atilio; Polizeli,Maria de Lourdes Teixeira de Moraes. |
| Abstract Filamentous fungi are widely diverse and ubiquitous organisms. Such biodiversity is barely known, making room for a great potential still to be discovered, especially in tropical environments - which are favorable to growth and species variety. Filamentous fungi are extensively applied to the production of industrial enzymes, such as the amylases. This class of enzymes acts in the hydrolysis of starch to glucose or maltooligosaccharides. In this work twenty-five filamentous fungi were isolated from samples of decomposing material collected in the Brazilian Atlantic Forest. The two best amylase producers were identified as Aspergillus brasiliensis and Rhizopus oryzae. Both are mesophilic, they grow well in organic nitrogen-rich media produce great... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amylase; Filamentous fungi; Aspergillus brasiliensis; Rhizopus oryzae; Glucoamylase; Bioprospection. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300204 |
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| Castro,André L. M. de; Vollú,Renata E.; Peixoto,Raquel S.; Grigorevski-Lima,André L.; Coelho,Rosalie R. R.; Bon,Elba P. S.; Rosado,Alexandre S.; Seldin,Lucy. |
| A cellulolytic bacterial strain, designated P118, isolated from the gut of the tropical fish Parotocinclus maculicauda was identified as belonging to the genus Paenibacillus based on phenotypic and chemotaxonomic characteristics and the 16S rRNA gene sequence. The novel strain was Gram-positive, spore-forming and rod-shaped. Catalase but not oxidase was produced. Carboxymethylcellulose was hydrolyzed but starch or gelatin was not. Acetoin production was negative whereas nitrate reduction and urease production were positive. Many carbohydrates served as carbon sources for growth. MK-7 was the predominant isoprenoid quinone. Anteiso-C15:0 (38.73%) and C16:0 (20.85%) were the dominant cellular fatty acids. Strain P118 was closely related to Paenibacillus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioprospection; Cellulose degradation; Paenibacillus sp.; Parotocinclus maculicauda; Taxonomy. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400048 |
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| Castilho,Adriana Lígia de; Silva,Juliana Paola Correa da; Saraceni,Cintia Helena Coury; Díaz,Ingrit Elida Collantes; Paciencia,Mateus Luís Barradas; Varella,Antonio Drauzio; Suffredini,Ivana Barbosa. |
| Previous studies analyzing 2,200 plant extracts indicated anti-enterococcal activity in 25 extracts obtained from Brazilian forests' plants. In the present study, these extracts were subjected to microdilution broth assay (MDBA) and disk diffusion assay (DDA) using planktonic Enterococcus faecalis ATCC® 29212TM and were submitted to phytochemical analysis in TLC and HPLC. Three extracts obtained from Ipomoea alba (MIC < 40 µg/mL), Diclinanona calycina (MIC < 40 µg/mL) and Moronobea coccinea (40 < MIC < 80 µg/mL; MBC = 80 µg/mL) showed significant bactericidal activity in the MDBA and four extracts obtained from I. alba (14.04 ± 0.55 mm diameter) S. globulifera (14.43 ± 0.33 mm and 12.18 ± 0.28 mm diameter) and Connarus ruber var. ruber (13.13 ±... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enterococcus faecalis; Endodontitis; Antibacterial activity; Amazon rain forest; Bioprospection. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300002 |
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| Registros recuperados: 13 | |
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