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Search Results: 1 - 10 of 5425 matches for " Suzan Kelly Vilela Bertolucci "
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Control of Enterotoxigenic Escherichia coli in Ground Beef by Blends of Essential Oils  [PDF]
Alline Aparecida Souza, Natália Jubram Zeneratto, Roberta Hilsdorf Piccoli, Suzan Kelly Vilela Bertolucci
Advances in Microbiology (AiM) , 2018, DOI: 10.4236/aim.2018.812061
Abstract: Different combinations of essential oils from cinnamon, cloves, oregano, and thyme were evaluated in vitro for their bactericidal activity against enterotoxigenic Escherichia coli (ETEC). The solutions containing cinnamon (0.03%), oregano (0.16%), and thyme (0.08%) (P1); and clove (0.08%), oregano (0.33%), and thyme (0.04%) (P2), exhibited high bactericidal activity, and were selected for use as preservatives in ground beef inoculated with ETEC and refrigerated. The two preservative solutions (P1 and P2) exhibited significant bactericidal action (p < 0.05) on ETEC, with ETEC reductions of 1.03 and of 0.87 LogUFC/g in the beef samples treated with P1 and P2, respectively. GC-MS analysis of the oil mixtures showed both preservatives to contain significant concentrations of carvacrol. Chromatic degradation was not observed in the samples treated with preservatives. Essential oil mixtures thus concocted are therefore potential preservative candidates in ground beef, as they are capable of controlling ETEC contamination while preserving the products’ coloration.
Optimization of the Protocol for the in Vitro Cultivation of Piper aduncum L.  [PDF]
Samia Torres Silva, Fernanda Ventorim Pacheco, Ivan Caldeira Almeida Alvarenga, José Eduardo Brasil Pereira Pinto, Suzan Kelly Vilela Bertolucci, Cibelly Pereira Ferreira
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.523363
Abstract:
Piper aduncum L. (Piperaceae) has great potential for economic exploration because of the proven use of its essential oil in the agriculture and in the human health. A technique that improves its propagation, as the tissue culture, becomes necessary. Some parameters must be determined for the successful cultivation in vitro. Thus, this study aimed to determine the salts concentration of MS medium, temperature, luminosity and light quality for in vitro culture of this species. The following treatments were conducted: 1/4MS, 1/2MS, MS and 2MS; 20, 25, 30 and 35; monochromatic blue, red and white lights and the combination of red and blue, using light emitting diodes (LEDs); luminosities of 17, 37, 48 and 73 μmol·m-2·s-1 obtained with cool white fluorescent lamp. After 35 days, the treatments were analyzed. To determine the salts concentration of MS, the variables were evaluated: number of shoots, leaves and roots, length and width of leaves, length and dry mass of root and shoots and percentage of death by necrosis. To the plantlets under different temperatures, length and dry mass of shoot and root, number of shoots, number, length and width of leaves and survival and rooting percentages were measured. The plantlets that were maintained under different luminosities were evaluated for length of shoot and root, dry mass of leaf and root. To evaluate the growth under the LEDs, the length and dry mass of shoot and root, number of shoots and roots, percentage of rooting and sprouting were assessed. The medium 1/4MS and the medium 1/2MS showed better responses for number and length of root, leaf width and shoot length. The temperature 25 provided the highest number of leaves, length of shoot and root, root dry mass and rooting percentage. The luminosity 73 μmol·m-2·s-1 provided higher values in length of root and dry mass of leaf and root. The red LED provided plantlets with greater growth. Thus, for the in vitro cultivation of Piper aduncum, 1/4MS, environment temperature of 25, light intensity of 73
Comprimento da estaca e tipo de substrato na propaga??o vegetativa de atroveran
Costa, Larissa Corrêa do Bomfim;Pinto, José Eduardo Brasil Pereira;Bertolucci, Suzan Kelly Vilela;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000400040
Abstract: the vegetative propagation of medicinal species is in increasing agronomic interest because it is the starting point and a basic tool for any cultivation in commercial scale. the objective of this work was to determine the best shoot cutting length and the best substrate for vegetative propagation of ocimum selloi. cuttings were placed in greenhouse conditions under intermittent mist. two cutting sizes (10 and 20cm) and three substrate types (washed sand, carbonized rice hulls and commercial substrate plantmax?) were tested. the experiment was in blocks randomly distributed in four replications and five cuttings for parcel. after thirty five days the percentage of rooting, the length of the bigger root (cm) and the leaf and root dry weight (mg) were analysed. the results indicated that the vegetative propagation of ocimum selloi by cuttings is viable, once its mean rooting was over 70%. it was not observed significative interaction within the adopted treatments. the cuttings with 20cm length presented larger leaf and root dry weight but the percentage of rooting and the length of the bigger root was not affected by the cutting lenght. the substrate types did not present effect on the development of the cuttings. the production of ocimum selloi seedlings is recommended with 20cm length cuttings using any substrate tested.
Produ??o de mudas de hortel?-japonesa em fun??o da idade e de diferentes tipos de estaca
Chagas, Jorge Henrique;Pereira Pinto, José Eduardo Brasil;Bertolucci, Suzan Kelly Vilela;Nalon, Felipe Hébia;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000800011
Abstract: the objective of this research was to verify the influence of different age and types of cuttings in the production of scion of mentha arvensis l. four different types of cuttings were evaluated: apical and medium cuttings (from aerial part); tip and medium cuttings (from rhizome part). the different types of cuttings were evaluated at 25 and 40 days of age. the cuttings used had 4-5cm long and covered with plantmax? substrate to a depth of 2/3. two rooting periods (25 and 40 days) from the different types of cuttings were evaluated: height, shoots number, aerial and roots dry biomass and percentage of mortality. the cuttings after the rooting period were transplanted to bed and pots. the mortality and the aerial part, roots and rhizome dry biomass were determined 30 days after being cultivated. the results showed that apical cuttings from aerial part at 25 and 40 days after being planted in trays had higher rooting, aerial part development and low mortality. at 25 days the aerial part developed and the scion was ready to be transplanted to field. thirty days after transplanted apical cuttings from aerial part showed a higher growth, except for rhizome dry biomass.
Crescimento vegetativo e produ??o de óleo essencial de hortel??pimenta cultivada sob malhas
Costa, Andressa Giovannini;Chagas, Jorge Henrique;Pinto, José Eduardo Brasil Pereira;Bertolucci, Suzan Kelly Vilela;
Pesquisa Agropecuária Brasileira , 2012, DOI: 10.1590/S0100-204X2012000400009
Abstract: the objective of this work was to evaluate the growth and the content, yield, and chemical composition of the essential oil of peppermint (mentha piperita) grown under different nets in lavras, mg, brazil. peppermint plants were grown in five environments: full sun, black net, aluminet net, blue net, and red net, all with 50% of irradiance. the experimental design was a completely randomized block with four replicates and five plants per plot. the evaluated parameters were: vegetative growth, content, yield, and chemical analysis of the essential oil. peppermint plants grown under full sun and black and red nets produced higher dry leaf biomass and higher essential oil content and yield. however, in full sun, the essential oil of the plants had higher contents of menthol and, under black and blue nets, of menthophurane. therefore, it is possible to manipulate plant growth and yield and chemical composition of the essential oil of peppermint with cultivation under nets or full sun.
Teor e composi o química do óleo essencial de Hyptis marrubioides Epl., Lamiaceae em fun o da sazonalidade = Content and chemical composition of Hyptis marrubioides essential oil in function of seasons
Priscila Pereira Botrel,José Eduardo Brasil Pereira Pinto,Vany Ferraz,Suzan Kelly Vilela Bertolucci
Acta Scientiarum : Agronomy , 2010,
Abstract: Os oleos essenciais sao principios odoriferos armazenados em celulas especiais da planta. O oleo essencial no genero Hyptis e usado como anestesico, antiespasmodico, antiinflamatorio e pode induzir aborto em doses elevadas. O objetivo deste trabalho foi avaliar a influencia da sazonalidade no teor e composicao do oleo essencial de Hyptis marrubioides. O delineamento experimental foi inteiramente casualizado, com quatro tratamentos (inverno, primavera, verao e outono) e seis repeticoes, totalizando 60 plantas. O oleo essencial foi extraido por hidrodestilacao, em aparelho de Clevenger. A analise qualitativa do oleo essencial foi por cromatografia em fase gasosa (CG/EM). Na estacao do verao, as folhas das plantas de H. marrubiodes apresentaram os maiores teores de oleo essencial. Nas demais estacoes, os teores de oleo essencial obtidos foram semelhantes entre si. Os componentes majoritarios no oleo essencial foram os monoterpenoides α-tujona e β-tujona. As concentracoes relativas dos picos correspondentes a β-tujona nao apresentaram diferencas consideraveis nas quatro estacoes. Os sesquiterpenoides oxigenados (cedrol e cariofilenol) e nao-oxigenados (α-copaeno, β-cariofileno, germacreno D e cadaleno) foram encontrados em menores quantidades no oleo essencial, entretanto observam-se diferencas quantitativas ao longo das estacoes. Essential oils are odorous principles stored in special plant cells. The essential oil in the Hyptis genus is traditionally used as an anesthetic, antispasmodic, antiinflammatory, and can induce abortion in high doses. The purpose of this work was to evaluate the influence of seasons in essential oil content and chemical composition of species H. marrubioides. A completely randomized complete design was used with four treatments (winter, spring, summer and autumn) and six replications, totaling 60 plants. The essential oil was obtained by hydrodistillation with a Clevenger apparatus. The qualitative analysis of the essential oil was performed by gas chromatography (GC/MS). In summer, plant leaves showed higher essential oil content. In the other seasons, essential oil content was similar. The majorcompounds in the essential oil were monoterpene α-thujone and β-thujone. The peak relative concentrations of β-thujone did not show considerable difference among the seasons. The oxygenate sesquiterpenoids (cedrol and caryophyllenol) and not oxygenate (α-copaene, α-caryophyllene, germacrene D and cadalene), were found in lower quantity in the essential oil; however, quantitative differences were observed over the seasons.
Potencial do carv o ativado, filtro amarelo e intera o fotoperíodo/temperatura na forma o de raízes tuberosas de batata-doce in vitro
Corrêa Ricardo Monteiro,Pinto José Eduardo Brasil Pereira,Bertolucci Suzan Kelly Vilela,Reis érika Soares
Ciência Rural , 2003,
Abstract: Neste presente trabalho, avaliou-se o potencial do carv o ativado, filtro amarelo e a intera o fotoperíodo/temperatura na forma o de estruturas semelhantes a raízes tuberosas de batata-doce (Ipomoea batatas L. Lam) em condi es in vitro. O experimento com carv o ativado foi conduzido em tubos de ensaio de 150mm x 25mm, contendo 10 ml de meio de cultura por tubo. Nos experimentos com filtro amarelo e fotoperíodo/temperatura foram utilizados frascos contendo 15 e 30ml, respectivamente de meio de cultura por frasco. O meio de cultura utilizado em todos os tratamentos foi o MS. Nos 3 experimentos, avaliou-se o número de estruturas semelhantes a raízes tuberosas, peso seco de raízes e parte aérea. Em rela o ao carv o ativado, notou-se que a sua associa o com ácido naftaleno acético, benzilaminopurina e cinetina prejudicou a forma o de estruturas semelhantes a raízes tuberosas além de proporcionar baixo peso seco de raízes e parte aérea. Em rela o ao filtro amarelo, notou-se que sua presen a com a associa o de reguladores de crescimento (ácido nafatleno acético, benzilaminopurina e cinetina) proporcionou maior forma o de estruturas semelhantes a raízes tuberosas, maior peso seco de raízes e parte aérea. Com rela o à intera o fotoperíodo e temperatura, os tratamentos que mantiveram a temperatura constante de 15masculineC, submetidos a fotoperíodos de 8, 10 e 12h luz, mesmo na presen a de ácido naftaleno acético e cinetina, reduziram a forma o de estruturas semelhantes a raízes tuberosas, peso seco de raízes e parte aérea .
Biomass production, yield and chemical composition of peppermint essential oil using different organic fertilizer sources Produ o de biomassa, rendimento e composi o química do óleo essencial de hortel -pimenta usando diferentes fontes de aduba o organica
Andressa Giovannini Costa,Suzan Kelly Vilela Bertolucci,Jorge Henrique Chagas,Elza Oliveira Ferraz
Ciência e Agrotecnologia , 2013,
Abstract: Mentha x piperita L. is an aromatic and medicinal species belonging to the family Lamiaceae that is popularly known as peppermint. The aim of this study was to evaluate the effects of organic fertilizer sources on the biomass production, yield and chemical composition of peppermint (Mentha piperita L.) essential oil. The experiment was conducted using a completely randomized design (CRD) with a 2 x 5 factorial scheme, two sources of manure (cattle and poultry), five doses (0, 3, 6, 9 and 12 kg m-2) and four replicates. Different doses of cattle and poultry manure significantly affected plant biomass production and the responses of other variables, including leaf area, leaf weight ratio, leaf area ratio, root:shoot ratio, yield and chemical composition. Organic fertilizer doses of 9.0 kg m-2 cattle manure and 8.3 kg m-2 poultry manure to obtain the maximum total dry biomass. The highest yield of essential oil was obtained by applying 11.8 kg m-2 poultry manure. Differences in the chemical composition of the essential oil were observed for only three components (menthone, pulegone and menthyl acetate) without significant changes in the menthol content. Mentha x piperita L. é uma planta aromática e medicinal pertencente à família Lamiaceae, popularmente conhecida como hortel -pimenta. No trabalho, objetivou-se verificar o efeito das fontes de aduba o organica na produ o de biomassa, no rendimento e na composi o química do óleo essencial de hortel -pimenta (Mentha piperita L.). O experimento foi conduzido em DIC, em esquema fatorial 2 x 5, com duas fontes de esterco, bovino e avícola, e cinco doses (0, 3, 6, 9 e 12 kg m-2), com quatro repeti es cada. As diferentes doses de estercos bovino e avícola influenciaram significativamente de forma benéfica a produ o de biomassa das plantas e também outras variáveis de crescimento como área foliar, raz o de peso foliar, raz o de área foliar, rela o raiz:parte aérea, rendimento e composi o química do óleo de hortel -pimenta. Utilizar aduba o organica para a obten o máxima de biomassa seca total as doses de 9,0 kg m-2 de esterco bovino e 8,3 kg m-2 de esterco avícola. O maior rendimento de óleo é obtido com a aplica o de 11,8 kg m-2 de esterco avícola. Diferen as na composi o química do óleo essencial foram observadas para três componentes (mentona, pulegona e acetato de mentila) sem mudan a significativa no conteúdo de mentol.
Produ??o de biomassa e teor de óleo essencial em fun??o da idade e época de colheita em plantas de hortel?-japonesa
Chagas, Jorge Henrique;Pinto, Jose Eduardo Brasil Pereira;Bertolucci, Suzan Kelly Vilela;Santos, Fúlvia Maria do;
Acta Scientiarum. Agronomy , 2011, DOI: 10.4025/actasciagron.v33i2.5698
Abstract: this present work aimed to evaluate the effect of period and age the plants on harvest, dry biomass production, essential oil percentage content and storage period of mint (mentha arvensis l.) plants. two experiments were set: the first evaluated the effect of three harvest ages (80, 100 and 120 days) after transplanting, and three ages at the second harvest (60, 75 and 90 days). a randomized blocks design was used, with four replications in a 3 x 3 factorial scheme. in the second experiment, three harvest periods were evaluated - early january, late march and early june. the harvested material was dried at 37°c, the dry biomass of the aerial parts was calculated, the essential oil was extracted in a modified clevenger instrument and its percentage contents were calculated. plant age at first harvest did influence essential oil content and dry biomass of the aerial parts in response to plant age at the second harvest. the harvest period in which the essential oil content was higher was in early june.
Teor e composi??o química do óleo essencial de Hyptis marrubioides Epl., Lamiaceae em fun??o da sazonalidade
Botrel, Priscila Pereira;Pinto, José Eduardo Brasil Pereira;Ferraz, Vany;Bertolucci, Suzan Kelly Vilela;Figueiredo, Felipe Campos;
Acta Scientiarum. Agronomy , 2010, DOI: 10.4025/actasciagron.v32i3.3415
Abstract: essential oils are odorous principles stored in special plant cells. the essential oil in the hyptis genus is traditionally used as an anesthetic, antispasmodic, anti-inflammatory, and can induce abortion in high doses. the purpose of this work was to evaluate the influence of seasons in essential oil content and chemical composition of species h. marrubioides. a completely randomized complete design was used with four treatments (winter, spring, summer and autumn) and six replications, totaling 60 plants. the essential oil was obtained by hydrodistillation with a clevenger apparatus. the qualitative analysis of the essential oil was performed by gas chromatography (gc/ms). in summer, plant leaves showed higher essential oil content. in the other seasons, essential oil content was similar. the major compounds in the essential oil were monoterpene α-thujone and β-thujone. the peak relative concentrations of β-thujone did not show considerable difference among the seasons. the oxygenate sesquiterpenoids (cedrol and caryophyllenol) and not oxygenate (α-copaene, α-caryophyllene, germacrene d and cadalene), were found in lower quantity in the essential oil; however, quantitative differences were observed over the seasons.
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