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| Registros recuperados: 737 | |
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| Queiroz Sousa,Maria de Fátima Vieira de; Lopes,Carlos Edison; Pereira Júnior,Nei. |
| A chemically defined medium consisting of D(+)fructose, L(-)threonine, K2HPO4, MgSO4.7H2O, ZnSO4.7H2O, CaCl2.2H2O, FeSO4.7H2O and deionized water, was developed to maximize the synthesis of actinomycin D by the Streptomyces parvulus DAUFPE 3124 strain. This medium resulted in the maximum antibiotic concentration of 133mg/L while using the original medium the production of actinomycin D was poor not surpassing 43mg/L. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Actinomycin D; Production; Streptomyces. parvulus; Synthetic medium. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300002 |
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| Tranier,Marie-Stéphane; Pognant-Gros,Johan; Quiroz,Reynaldo De la Cruz; González,Cristóbal Noé Aguilar; Mateille,Thierry; Roussos,Sevastianos. |
| Root-knot nematodes are microscopic round worms, which cause severe agricultural losses. Their attacks affect the productivity by reducing the amount and the caliber of the fruits. Chemical control is widely used, but biological control appears to be a better solution, mainly using microorganisms to reduce the quantity of pests infecting crops. Biological control is developing gradually, and with time, more products are being marketed worldwide. They can be formulated with bacteria, viruses or with filamentous fungi, which can destroy and feed on phytoparasitic nematodes. To be used by the farmers, biopesticides must be legalized by the states, which has led to the establishment of a legal framework for their use, devised by various governmental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biopesticides; Meloidogynespp.; Filamentous Fungi; Homologation; Production; Formulation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600831 |
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| Bajaj,Bijender Kumar; Singh,Satbir; Khullar,Mowkshi; Singh,Kaurab; Bhardwaj,Shikha. |
| The aim of this work was to study the production of fibrinolytic protease by Bacillus subtilis I-2 on agricultural residues. Molasses substantially enhanced (63%) protease production (652.32 U/mL) than control (398.64 U/mL). Soybean meal supported maximum protease production (797.28 U/mL), followed by malt extract (770.1 U/mL), cotton cake (761.04 U/mL), gelatin (742.92 U/mL) and beef extract (724.8 U/mL). Based on the Plackett-Burman designed experiments, incubation time, soybean meal, mustard cake and molasses were identified as the significant fermentation parameters. Ammonium sulfate precipitation and DEAE sephadex chromatography resulted 4.8-fold purification of protease. Zymography showed the presence of three iso-forms in the partially purified... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fibrinolytic Protease; Production; Agricultural residues; Bacillus subtilis I-2. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500653 |
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| Fawzi,Eman Mohamed. |
| Thirty fungal species grown on Cichorium intybus L. root extract as a sole carbon source, were screened for the production of exo-inulinase activities. The thermophile Thielavia terrestris NRRL 8126 and mesophile Aspergillus foetidus NRRL 337 gave the highest production levels of inulinases I & II at 50 and 24 ºC respectively. Yeast extract and peptone were the best nitrogen sources for highest production of inulinases I & II at five and seven days of incubation respectively. The two inulinases I & II were purified to homogeneity by gel-filtration and ion-exchange chromatography with 66.0 and 42.0 fold of purification respectively. The optimum temperatures of purified inulinases I & II were 75 and 50 ºC respectively.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inulinases; Production; Purification; Thermophile; Thermostability. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200028 |
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| Marques,Daniela A. Viana; Cunha,Márcia N. Carneiro; Araújo,Janete M.; Lima-Filho,José L.; Converti,Attilio; Pessoa-Jr,Adalberto; Porto,Ana L. Figueiredo. |
| Clavulanic acid is a β-lactam antibiotic which has a potent β-lactamase inhibiting activity. In order to optimize its production by the new isolate Streptomyces DAUFPE 3060, the influence of two independent variables, temperature and soybean flour concentration, on clavulanic acid and biomass concentrations was investigated in 250 mL-Erlenmeyers according to a 2² central composite design. To this purpose, temperature and soybean flour (SF) concentration were varied in the ranges 26-34°C and 10-50 g/L, respectively, and the results evaluated utilizing the Response Surface Methodology. The experimental maximum production of clavulanic acid (629 mg/L) was obtained at 32°C and 40 g/L SF after 48 h, while the maximum biomass concentration (3.9 g/L) at 30°C and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clavulanic acid; Response surface methodology; Production; Optimization; Streptomyces sp. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200030 |
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| Weinacker,Daniel; Rabert,Claudia; Zepeda,Andrea B.; Figueroa,Carolina A.; Pessoa,Adalberto; Farías,Jorge G.. |
| Since the 1970s, the establishment and development of the biotech industry has improved exponentially, allowing the commercial production of biopharmaceutical proteins. Nowadays, new recombinant protein production is considered a multibillion-dollar market, in which about 25% of commercial pharmaceuticals are biopharmaceuticals. But to achieve a competitive production process is not an easy task. Any production process has to be highly productive, efficient and economic. Despite that the perfect host is still not discovered, several research groups have chosen Pichia pastoris as expression system for the production of their protein because of its many features. The attempt of this review is to embrace several research lines that have adopted Pichia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yeast; Heterologous expression system; Recombinant protein; Production; Scale up. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400004 |
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| Gomaa,Eman Zakaria. |
| The potentiality of 23 bacterial isolates to produce alkaline protease and carboxymethyl-cellulase (CMCase) on Ficus nitida wastes was investigated. Bacillus pumillus ATCC7061 was selected as the most potent bacterial strain for the production of both enzymes. It was found that the optimum production of protease and CMCase were recorded at 30 °C, 5% Ficus nitida leaves and incubation period of 72 h. The best nitrogen sources for protease and CMCase production were yeast extract and casein, respectively. Also maximum protease and CMCase production were reported at pH 9 and pH 10, respectively. The enzymes possessed a good stability over a pH range of 8-10, expressed their maximum activities at pH10 and temperature range of 30-50 °C, expressed their maximum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alkaliphillic; Protease; Carboxymethylcellulase; Production; Characterization. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200033 |
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| Wanderley,Maria Carolina de Albuquerque; Duarte Neto,José Manoel Wanderley; Lima Filho,José Luiz de; Lima,Carolina de Albuquerque; Teixeira,José António Couto; Porto,Ana Lúcia Figueiredo. |
| Abstract Specific proteases capable of degrading native triple helical or denatured collagen have been required for many years and have a large spectrum of applications. There are few complete reports that fully uncover production, characterization and purification of fungi collagenases. In this review, authors searched through four scientific on line data bases using the following keywords (collagenolytic OR collagenase) AND (fungi OR fungus OR fungal) AND (production OR synthesis OR synthesize) AND (characterization). Scientific criteria were adopted in this review to classify found articles by score (from 0 to 10). After exclusion criteria, 21 articles were selected. None obtained the maximum of 10 points defined by the methodology, which indicates a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Collagenase; Fungus; Characterization; Purification; Production. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100013 |
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| Muraro,Daniel; Negrelle,Raquel R.B; Cuquel,Francine L; Anacleto,Adilson. |
| The results of a study of the impact of market management on the ornamental plants supply chain are presented, using Curitiba, which is considered the most expressive flower market in Paraná State, as a case study. The flower market in Paraná ranks fifth in Brazil in terms of the volume of commercialization and sixth in terms of per capita consumption. However, this State, which initiated floriculture activities nearly 50 years ago, does not have a prominent florist supply pole, although adequate environmental conditions for such activities exist in Paraná. Therefore, to obtain more information about and a better understanding of the determinants of this scenario, a literature review and interviews were conducted. The flower shops structure and operations... |
| Tipo: Journal article |
Palavras-chave: Brazil; Business relationship; Floriculture; Production; Retail and wholesale. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300013 |
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| Anzanello,Rafael; Tedesco,Assis. |
| ABSTRACT: Chemical treatment is a mean to accomplish fruit thinning; although its efficiency depends on the compound used, application time, and dosage. Effect of the chemical hydrogen cyanamide (CH2N2) on the thinning of flowers and fruits of the peach cultivar Coral was assessed in this study. Treatments consisted of five doses of CH2N2 (0, 0.2, 0.4, 0.6, and 0.8%) spray application to the point of run-off, at two stages (50% and 100% flowering). The experiment was conducted in a completely randomized design with six replicates and one plant per plot. The following parameters were assessed: percentage of flowers thinned at 25 days after spraying, percentage of fruits thinned, fruiting index, production per plant, fruit mass, diameter and length, flesh... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica; Phytoregulators; Fruit size; Production. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000205 |
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| Miranda,Karina Rodrigues de; Dubeux Junior,José Carlos Batista; Mello,Alexandre Carneiro Leão de; Silva,Maria da Conceição; Santos,Mércia Virginia Ferreira dos; Santos,Djalma Cordeiro dos. |
| ABSTRACT: The objective of this study was to evaluate the productive potential and mineral composition of the forage cactus IPA-Sertânia (Nopalea cochenillifera Salm Dyck). This species was analyzed both in monoculture and intercropped with leucaena [Leucaena leucocephala (Lam.) De Wit.] and gliricidia [Gliricidia sepium (Jacq. Steud.], and was assessed with different sources of manure (cattle, sheep, goat, and broiler litter) serving as fertilizer. The experiment was conducted at the Experimental Station of the Instituto Agronômico de Pernambuco in Caruaru, PE, Brazil. Treatments were allocated in a split-plot arrangement in a randomized complete block design, with four replications. Main plots consisted of cropping systems, while the split-plots were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizer; Intercropping; Minerals; Nopalea; Production. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100654 |
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| Roll,Victor Fernando Büttow; Briz,Ricardo Cepero; Levrino,Gustavo Adolfo Maria. |
| The influences of floor- and cage-rearing on egg production, egg quality and physical condition were investigated in laying hens housed in furnished cages. Two groups of 180 Isa Brown commercial layer pullets were reared in cages (CR) or floor pens (FR) and transferred to furnished cages, where their production, egg quality and physical condition was observed throughout the laying period (18-78wks of age). At 17 weeks of age, hens were placed in one of 36 furnished cages with 10 birds in each cage, each containing a nest box, perches, a dust bath, and abrasive strips. From 19 to 78 weeks of age, egg production data were collected daily. Commercial egg quality was assessed monthly. At, 19 and 78 weeks of age, claw length and feather cover were visually... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Layer pullets; Plumage; Production; Rearing system. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000500034 |
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| Carneiro,Daniella Nogueira Moraes; Almeida,Elka Fabiana Aparecida; Paiva,Patrícia Duarte de Oliveira; Frazão,Jussara Ellen Morais; Santos,Fernanda Helena de Souza; Carneiro,Leandro Flávio. |
| The cultivation of the calla lily, despite its importance in the floriculture sector, is still limited due to the lack of knowledge of basic production techniques such as development and dry mass accumulation. These techniques facilitate more appropriate management, especially regarding the application of fertilizers, providing better nutrients utilization and greater yields. Thus, this study was aimed at evaluating the growth and development of calla lily plants, establishing growth curves according to dry mass accumulation. Acclimatized and micropropagated calla lily plantlets were grown in plastic pots containing coconut fiber as a substrate and fertilized with a modified formula of Malavolta. Treatments consisted of assessments at intervals of 30 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zantedeschia aethiopica; Floriculture; Growth; Production. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600007 |
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| Registros recuperados: 737 | |
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