931 resultados para |Plantas medicinais
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Research on natural products is extremely important either for new compound discovery with possible pharmacology uses or for its impact on economy, which moves millions of dollars for year. Scientific studies related on utilization and characterization of bioactive substances are important due to the fact that many drugs currently used by the population were synthetized from isolated compounds of natural products. Among many medicinal species commonly used, there are that ones from the genus Eugenia, witch belongs to Myrtaceae family. Eugenia is one of the biggest genus from this family and has about 5000 species and Brazil has 400 of them, which are appreciated on gastronomy for its fruits, for example, pitanga (Eugenia uniflora), cherry (Eugenia involucrata), clove (Eugenia caryophyllata) and cagaita (Eugenia dysinterica). Phytochemical studies of plants from this genus report the presence of several secondary metabolites like flavonoids, tannins, coumarins, anthocyanins and more. Eugenia species have important pharmacology activity as antioxidant, hypothermic, antidiarrheal, antihypertensive, antimicrobial and fungicide. Thus, Eugenia is a genus which has species with potencial phytotherapic products
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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The species Artemisia annua L. (Asteraceae) is native to China and has artemisinin as its main active component, substance that is considered a potent antimalarial drug. With the increased interest in natural active principles, studies related to post-harvest and storage of vegetable material become important for better conservation of its phytotherapic properties. Therefore, the present study had as objectivedefine the best storage conditions to preserve and keep the quality of phytotherapic drugs. Leaves of A. annua dried were stored for six months in polyethylene bags wrapped in Kraft paper and packed in four treatments: at ambient condition, refrigerated at 4 2 oC, using normal packing, and using vacuum packing. Samples were taken for microbiological, moisture content, and level of artemisinin analyses before the experiment begun and at 30, 90, 120 and 180 days. The results of microbiological tests showed no significant contamination, as well as the moisture content of the stored (biological) material, which remain between 5% and 10%, keeping within acceptable parameters. The ambient without vacuum treatment (SVA) was the treatment that better maintained the sample stability during 180 days, however, the refrigerated without vacuum (SVR) showed greater efficiency to conserve the content of artemisinin.
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
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Electrical conductivity has been proposed as a rapid test to evaluate seed vigor; however, few researches have emphasized methodologies to its use in seeds of medicinal plants, such as chamomile. The objective of the research was to evaluate the electrical conductivity of chamomile seeds affected by different imbibition times and sample size. The evaluations consisted of moisture content, germination and vigor (first count of germination) to seed initial characterization. Then, it was evaluated the electrical conductivity, affected by imbibition time (6, 12, 24 e 48 hours) and seed amount per sample (25, 50, 75, 100). The completely randomized design was used with four replications, arranged as a 4 x 4 factorial. Means were compared by the Tukey test at 5% of probability. It was concluded that the electrical conductivity of chamomile seeds is affected by the number of seeds per sample and imbibition time isolately.
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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Ps-graduao em Agronomia (Horticultura) - FCA
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Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
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Coordenao de Aperfeioamento de Pessoal de Nvel Superior (CAPES)
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Ps-graduao em Agronomia (Horticultura) - FCA
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The oregano is a plant, rich in essential oil and very used as spice in the preparation of foods. The objective of this paper was to analyze the viability of irrigation for oregano in Presidente Prudente, So Paulo state, Brazil, including economic risk factors, their effect on irrigation total cost, as well as the different pumping kinds. The Monte Carlo simulation was utilized to study the economic factors: fixed cost, labor, maintenance, pumping and water. The use of irrigation for the oregano in the region of Presidente Prudente is indicated because of its economic feasibility and the reduced risks. The average values of the benefit/cost for all water depths tested were higher than 1, indicating viability. The use of irrigation promoted lower risks compared to the non irrigated crop. The micro irrigation system presented greater sensitivity to changes of prices of the equipment associated to the variation of the useful life of the system. The oregano selling price was the most important factor involved in annual net profit. The water cost was the factor of lesser influence on the total cost. Due to the characteristic of high drip irrigation frequency there was no difference between the tariffs based in use hour of electric energy classified as green and blue, which are characterized by applying different rates on the energy consumption and demand according to the hours of day and times of the year. For the studied region it was recommended drip irrigation water management of oregano with the daily application of 100% of pan evaporation Class A using electric motor with tariffs blue or green.
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A sexualidade de Lea e Raquel, o tero, as mandrgoras e o corpo de Jac so fatores que definem o alicerce do nosso texto como espaos de dilogo, mediao e estrutura do cenrio. O destaque principal est sob o captulo 30.14-16 que retrata a memria das mandrgoras. Como plantas msticas elas dominam o campo religioso e como plantas medicinais elas so utilizadas para solucionar problemas biolgicos. As instituies e sociedades detentoras de uma ideologia e de leis que regulamentam uma existncia apresentam na narrativa, duas irms, mas tambm esposas de um mesmo homem que, manipuladas por essa instituio que minimiza e oprime a mulher, principalmente a estril, confina-as como simples objeto de sexualidade e mantenedoras da descendncia por meio da maternidade. A memria das mandrgoras sinal de que a prtica existente circundava uma religio no monotesta. Ela existia sociologicamente por meio de sincretismos, fora e poderes scio-culturais e religiosos. Era constituda das memrias de mulheres que manipulavam e dominavam o poder sagrado para controle de suas necessidades. O discurso dessas mulheres, em nossa unidade, prova que o discurso dessa narrativa no se encontra somente no plano individual, mas tambm se estende a nvel comunitrio, espao que as define e lhes concede importncia por meio do casamento e ddivas da maternidade como continuidade da descendncia. So mulheres que dominaram um espao na histria com suas lutas e vitrias, com atos de amor e de sofrimento, de crenas e poderes numa experincia religiosa dominada pelo masculino que vai alm do nosso conhecimento atual. As lutas firmadas na f e na ideologia dessas mulheres definiram e acentuaram seu papel de protagonistas nas narrativas 9 bblicas que estudamos no Gnesis. A conservao dessas narrativas, e do espao teolgico da poca, definiu espaos, vidas, geraes e tribos que determinaram as geraes prometidas e fecharam um ciclo: o da promessa de Iahweh quanto descendncia desde Abrao. Os mitos e as crenas foram extintos para dar espao a uma f monotesta, mas a experincia religiosa
