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Literatura académica sobre el tema "Salvinia sp"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 17 de febrero de 2022

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Artículos de revistas sobre el tema "Salvinia sp"

Dornfeld, Carolina Buso y Alaide A. Fonseca-Gessner. "Fauna de Chironomidae (Diptera) associada à Salvinia sp. e Myriophyllum sp. num reservatório do córrego do espraiado, São Carlos, São Paulo, Brasil". Entomología y Vectores 12, n.º 2 (junio de 2005): 181–92. http://dx.doi.org/10.1590/s0328-03812005000200005.

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A presença de vegetação num ecossistema aquático é mais uma aréa disponível para a colonização. Vários estudos têm demonstrado uma relação positiva entre a presença de macrófitas e a abundância e a diversidade de Chironomidae. As variáveis ambientais e as larvas de Chironomidae associadas com as macrófitas Salvinia sp. e Myriophyllum sp. foram estudadas num reservatório com pequenas dimensões no estado de São Paulo, Brasil. Em Salvinia os grupos predominantes foram Tanytarsus, Monopelopia e Labrundinia, entretanto Cricotopus e Tanytarsus alternaram a dominância em Myriophyllum. Alem disso, discutiu-se a estrutura dos grupos funcionais de alimentação associados a essas macrófitas.

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Mukti, Retno Cahya y Ria Octaviani. "EFFECT OF PLANTS MEAL FROM Eeichhornia crassipes AND Salvinia molesta ON GROWTH OF Pangasius sp." e-Jurnal Rekayasa dan Teknologi Budidaya Perairan 9, n.º 1 (21 de octubre de 2020): 1067. http://dx.doi.org/10.23960/jrtbp.v9i1.p1067-1074.

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Plant meals from Eichhornia crassipes and Salvinia molesta can be used as alternative ingredients for feed in aquaculture. The purpose of this study was to determine the effect of the use of plant meals as a feed on the growth of Pangasius. The experimental designed consist of three treatments and triplicates: P0: commercial feed (control); P1: feed with the addition of 25% Eichhornia crassipes; P2: feed with the addition of 25% Salvinia molesta. The results showed that plant meals in feed showed significantly different results on the growth of body weight, specific growth rate, and efficiency of Pangasius feed. The recommended treatment was the addition of Salvinia molesta with a weight growth value of 3.84 g, a specific growth rate of 2.07%, and feed efficiency of 59.96%.

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Hernayanti y S. Lestari. "Phytoremediation of liquid waste electroplating using Salvinia sp." IOP Conference Series: Earth and Environmental Science 550 (17 de septiembre de 2020): 012019. http://dx.doi.org/10.1088/1755-1315/550/1/012019.

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de Moraes Ferreira, Rachel, Michael Douglas Peçanha de Souza, Iracema Takase y Danielle Marques de Araujo Stapelfeldt. "Pb(II) adsorption by biomass from chemically modified aquatic macrophytes, Salvinia sp. and Pistia stratiotes". Water Science and Technology 73, n.º 11 (4 de marzo de 2016): 2670–79. http://dx.doi.org/10.2166/wst.2016.107.

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This study used two biosorbents obtained from the aquatic plants Salvinia sp. and Pistia stratiotes to establish a sustainable and alternative treatment for industrial wastewater and other water bodies that contain Pb(II). The biosorbent named Salvinia with NaOH (SOH) was obtained from Salvinia sp., and Salvinia and Pistia mixture with NaOH (SPOH) was obtained from a mixture of the two plants in a 1:1 ratio. The biosorbents were characterized by zeta potential, infrared (IR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive spectroscopy and Boehm titration. The results of Boehm titration and IR analysis indicated the presence of basic functional groups, whereas those of SEM analysis indicated that the biosorbents have a structure conducive to adsorption. Batch adsorption experiments were performed to observe the effects of pH, contact time, initial lead concentration and temperature on the metal removal process. The results revealed that the biosorbents efficiently removed Pb(II) from aqueous solutions, with a maximum observed adsorption capacity (saturation limits, qmax) of 202 mg g−1 and 210.1 mg g−1 for SPOH and SOH, respectively. The Freundlich, Langmuir and Dubinin–Radushkevich models were applied to the data; these biosorbent studies did not satisfactorily adjust to either of the models, but the information obtained helped us understand the adsorption mechanism.

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Sanches, Nathalie Aparecida De Oliveira y Guilherme Rossi Gorni. "Preferência de Habitat de Oligochaeta (Annelida, Clitellata) em Macrófitas Aquáticas na Represa Ribeirão das Anhumas (Américo Brasiliense-Sp)". Revista Brasileira Multidisciplinar 17, n.º 1 (6 de enero de 2014): 165. http://dx.doi.org/10.25061/2527-2675/rebram/2014.v17i1.16.

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As macrófitas possuem complexidades estruturais morfológicas diferentes, oferecendo aos animais a disponibilidade de vários nichos. Esses vegetais também são um importante substrato para o desenvolvimento de perifíton, que possui grande valor nutricional e constitui um dos principais alimentos dos invertebrados aquáticos, principalmente naidídeos. Este estudo teve como objetivo verificar a diversidade da comunidade de Oligochaeta em macrófitas dos gêneros Egeria sp. e Salvinia sp., em lagoas marginais da represa do Ribeirão das Anhumas. Essas macrófitas possuem características tridimensionais distintas e hábitos diferentes, sendo a Egeria submersa fixa e a Salvinia flutuante livre. As coletas das macrófitas foram realizadas entre os meses de agosto de 2012 e abril de 2013. Das amostras vegetais foram tomadas 100 gramas de biomassa (peso úmido) de cada gênero e a remoção das plantas do ambiente foi feita com o auxílio de uma peneira com malha 0,21 mm. Entre as duas macrófitas analisadas, a Egeria sp. foi a que obteve maior diversidade, riqueza e abundância em relação à Salvinia sp. Esses resultados demonstram que as macrófitas aquáticas são importantes para o estabelecimento dos oligoquetos, fornecendo principalmente proteção e alimento, e que possivelmente a morfologia e hábito das plantas são os fatores que mais influenciam na associação da oligogauna com esses vegetais.

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Ferreira, Rachel de Moraes, Ana Laura Campista Domingues, Iracema Takase y Danielle Marques de Araujo Stapelfeldt. "Studies of selective adsorption, desorption and reuse of chemically altered biomass produced from aquatic macrophytes for treatment of metal-containing wastewater". Water Science and Technology 75, n.º 9 (16 de febrero de 2017): 2083–93. http://dx.doi.org/10.2166/wst.2017.090.

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The aquatic macrophytes Salvinia sp. and Pistia stratiotes have a natural capacity to adsorb various elements, including heavy metals. This capacity was enhanced with a chemical treatment using NaOH alkaline solution for Salvinia sp. and a mixture of both Salvinia sp. and Pistia stratiotes at a proportion of 1:1, whose respective biosorbents were called SSOH and MBOH. Adsorption tests were done in a ternary system containing the metals copper, lead and manganese; the parameters considered were: starting concentration, kinetics, pH and temperature. The adsorption isotherms for SSOH had a maximum adsorptive capacity of 50.20, 53.85 and 14.68 mg g−1 for Cu, Pb and Mn, respectively; for MBOH, maximum values were 44.62, 35.17 and 15.74 mg g−1 for Cu, Pb and Mn, respectively. The metals displayed different behaviors with pH variation. The results also showed an adsorption preference of Cu > Pb > Mn for SSOH. Desorption and readsorption studies were also carried out, showing 100% desorption and increased adsorption capacity in readsorption tests. Surface area and porosity analysis with the Brunauer–Emmett–Teller (BET) method indicate that after chemical modification, MBOH and SSOH biomasses had their surface increased in comparison to SS, with values of 165.5657 (MBOH), 157.4392 (SSOH) and 78.9432 m2 g−1 (SS).

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Oliveira, Jessika Cabral G., Rachel de Moraes Ferreira y Danielle M. A. Stapelfeldt. "Use of Salvinia sp on the adsorption of hexavalent chromium". Environmental Science and Pollution Research 26, n.º 29 (23 de agosto de 2019): 30463–71. http://dx.doi.org/10.1007/s11356-019-06127-5.

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Safarrida, Anna, Ngadiman . y Jaka Widada. "FITOREMEDIASI KANDUNGAN KROMIUM PADA LIMBAH CAIR MENGGUNAKAN TANAMAN AIR". Jurnal Bioteknologi & Biosains Indonesia (JBBI) 2, n.º 2 (3 de diciembre de 2015): 55. http://dx.doi.org/10.29122/jbbi.v2i2.509.

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Existence of heavy metals in industrial waste is gaining global attention since their negative impact to environment. One of the efforts to solve the problem was to use plant to absorb metal in liquid medium, known as rhizofiltration. This research was aimed to select aquatic plants which showed relative resistantce and susceptibility to chromium. Four species of aquatic plants (Pistia stratiotes, Eichhornia crassipes, Lemna minor and Salvinia sp.) were grown in artificial medium (Hoagland) supplemented with 0, 1, 2, 4 and 8 ppm chromium. The plants resistance and absorption toward chromium was observed based on the morphology and chromium content in their biomass. Based on their resistance to and absorption of chromium, the selected plants were tested further in liquid waste of tanning industry. In Hoagland medium, Salvinia sp. demonstrated 67.2% higher resistance and absorption toward chromium while that of P. stratiotes 20.3% lower compared to other plants which were tested. This result could be applicable in reducing such environmental pollutant as the heavy metal chromium from industrial waste. Keywords: Phytoremediation, chromium, Hoagland medium, aquatic plants, liquid waste ABSTRAKLogam berat dalam limbah industri merupakan bahan pencemar lingkungan yang mendapatkan perhatian global. Salah satu upaya untuk mengatasi masalah tersebut adalah memanfaatkan tanaman untuk menyerap logam dalam medium cair atau dikenal sebagai fitoremediasi. Penelitian ini bertujuan untuk mengetahui tanaman air lokal yang tahan dan peka secara relatif terhadap kromium. Empat spesies tanaman air (Pistia stratiotes, Eichhornia crassipes, Lemna minor, dan Salvinia sp.) ditumbuhkan pada medium buatan (Hoagland) yang dipasok kromium 0, 1, 2, 4, dan 8 ppm. Pengujian toleransi tanaman dan serapan terhadap kromium dilakukan berdasarkan pengamatan morfologis serta analisis kadar kromium dalam biomasa. Berdasarkan daya tahan dan serapan kromium, tanaman terseleksi diujikan lebih lanjut dalam limbah cair industri penyamakan kulit. Dalam medium Hoagland, Salvinia sp. mempunyai ketahanan dan serapan kromium lebih tinggi sebesar 67,2% sedangkan P. stratiotes mempunyai ketahanan dan serapan kromium lebih rendah sebesar 20,3% dibandingkan tanaman lain yang diujikan. Hasil penelitian ini dapat diterapkan untuk mengurangi bahan pencemar lingkungan berupa logam berat kromium dari limbah industri.Kata Kunci: Fitoremediasi, kromium, medium Hoagland, tanaman air, limbah cair

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Lopes, Célia de Almeida, Anna Christina Esper Amaro de Faria, Gislaine Iachstel Manetta y Evanilde Benedito-Cecilio. "Caloric density of aquatic macrophytes in different environments of the Baía river subsystem, upper Paraná river floodplain, Brazil". Brazilian Archives of Biology and Technology 49, n.º 5 (septiembre de 2006): 835–42. http://dx.doi.org/10.1590/s1516-89132006000600018.

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The aim of this work was to determine the caloric density of leaves, stems and roots of aquatic macrophytes in different environments of the Baía subsystem (Baía river and Fechada and Guaraná lagoons) on the Upper Paraná river floodplain, in addition to identify the variability between ecological groups. Samplings of Eichhornia crassipes, Salvinia spp, Pistia stratiotes, Eichhornia azurea, Polygonum sp, Cyperaceae and Poaceae were carried out in February 2003. Spatial differences in the caloric densities were not observed for these plants. Caloric density values varied from 1906.9 cal/g dry weight (root) to 4675.0 cal/g dry weight (leaf). However, significant differences between the caloric content averages of the vegetative structures were observed only for Polygonum sp and Salvinia spp. In relation to the ecological groups, the highest average value was verified for the emergent macrophytes (3529.7 ± 722.5), which were significantly different from the floating ones (3056.5 ± 571.0). There was no difference between the sites included in the subsystem when the caloric densities were compared.

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BITAR, A. L. y I. BIANCHINI Jr. "Mineralisaton assays of some organic resources of aquatic systems". Brazilian Journal of Biology 62, n.º 4a (noviembre de 2002): 557–64. http://dx.doi.org/10.1590/s1519-69842002000400001.

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Assays were carried out to evaluate the consumption of dissolved oxygen resulting from mineralisation processes in resources usually found in aquatic systems. They were also aimed at estimating the oxygen uptake rate of each investigated process. Experiments were conducted using substrates from 3 different places. A fixed amount of substrate was added to 5 litres of water from Lagoa do Infernão that was previously filtered with glass wool. After adding the substrates the bottles were aired and the amount of dissolved oxygen and the temperature were monitored for 55 days. The occurrence of anaerobic processes was avoided by reoxygenating the bottles. The experimental results were fitted to a first order kinetics model, from which the consumption of dissolved oxygen owing to mineralisation processes was obtained. The amount of oxygen uptake from the mineralisation processes appeared in the following decreasing order: Wolffia sp., Cabomba sp., Lemna sp., DOM (Dissolved Organic Matter), Salvinia sp., Scirpus cubensis, stem, Eichhornia azurea, sediment and humic compounds. The deoxygenation rates (day-1) were: 0.267 (humic compounds), 0.230 (Lemna sp.), 0.199 (E. azurea), 0.166 (S. cubensis), 0.132 (sediment), 0.126 (DOM), 0.093 (Cabomba sp.), 0.091 (stem), 0.079 (Salvinia sp. and Wolffia sp.). From these results, 2 groups of resources could be identified: the first one consists of detritus with higher amounts of labile (ready to use) compounds, which show a higher global oxygen uptake during the mineralisation process; the second one consists mainly of resources that show refracting characteristics. However, when the consumption rates are analysed it is noted that the mineralised parts of the refracting substrates can be easier to process than the labile fractions of the less refracting resources.

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Tesis sobre el tema "Salvinia sp"

Limons, Rafaela da Silva. "Avaliação do potencial de utilização da macrófita aquática seca Salvinia sp. no tratamento de efluentes de fecularia". Universidade Estadual do Oeste do Parana, 2008. http://tede.unioeste.br:8080/tede/handle/tede/1871.

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Made available in DSpace on 2017-07-10T18:08:09Z (GMT). No. of bitstreams: 1 Rafaela da Silva Limons.pdf: 1188810 bytes, checksum: 3222e9bb51995ce2bffdbb6505a56d20 (MD5) Previous issue date: 2008-02-11
The industries of cassava processing are considered great polluting, therefore they generate highly pollutant a wastewater, the manipueira, with high concentration of organic substance. The method of treatment used in these industries is basically the system of stabilization. However, in function of the raised organic load, normally the effluent end if does not present in adequately favorable conditions for the ousting in hydrias resources, being essential a complementary treatment, so that the wastewater is adjusted to the current law. Thus, this work had for objective to study the removal of organic substance, nutrients and metals weighed, by means of a batelada system, for the dry biomass of the macrófita Salvinia sp. In this direction, with intention to investigate the factors that influence the capacity of removal of these contaminantes and to understand the mechanisms of this process, it was used as technique of factorial planning rotational central delineation composed - DCCR, verifying the influence of three independent 0 variable: pH initial, initial concentration of biomass - C and agitation -. The gotten results had shown that the best operational conditions had in accordance with varied the studied pollutant, thus best pH were: 5,8 for the match - P and zinc - Zn and 8,2 for the chemical demand of oxygen - DQO, nitrogen - N and have covered - Cu; the best concentration of biomass of 0,0013 g/mL for the DQO, the N, P and Zn and 0,0053 g/mL for the Cu and the 30 agitation of rpm for DQO and N and 120 rpm for the P, Zn and Cu. For the Compact disc removal of 100% in practically all was gotten the assays, in virtue of low the initial concentration of this metal. The gotten results had allowed to conclude respectively that in the best operational conditions the dry biomass of the Salvinia sp. influenced positively in process, reaching 97.91% of removal of DQO, 99.96% of P and 99.67% of N, with initial concentration of 20.480, 121,6 and 350 mg/L. Moreover, the results had shown to the promising character of the Salvinia sp. as biossorvente, being capable to adsorver up to 76,70% of íons of Zn, 99.79% of Cu and 100% of íons Compact disc, in industrias liquid residues contend small metal concentration heavy. The assays with the isotherms of adsorção of Zn and Cu had indicated that the capacity of biossorção of copper and 0,50 zinc had been approximately of 0,70 and meq/g in pH 5,0, being that the best adjustment occurred with the Isotherm of Sips.
As indústrias de processamento de mandioca são consideradas grandes poluidoras, pois geram um resíduo líquido altamente poluente, a manipueira, com alta concentração de matéria orgânica. O método de tratamento empregado nestas indústrias é basicamente o sistema de lagoas. Entretanto, em função da elevada carga orgânica, normalmente o efluente final não se apresenta em condições adequadamente favoráveis para o despejo em recursos hídricos, sendo essencial um tratamento complementar, para que o resíduo líquido esteja adequado à legislação vigente. Assim, este trabalho teve por objetivo estudar a remoção de matéria orgânica, nutrientes e metais pesados, por meio de um sistema batelada, pela biomassa seca da macrófita Salvinia sp. Neste sentido, com o intuito de investigar os fatores que influenciam a capacidade de remoção destes contaminantes e para se compreender os mecanismos deste processo, utilizou-se como técnica de planejamento fatorial o delineamento composto central rotacional - DCCR, verificando a influência de três variáveis independentes: pH inicial, concentração inicial de biomassa - C e agitação - A. Os resultados obtidos mostraram que as melhores condições operacionais variaram de acordo com o poluente estudado, assim o melhor pH foi: 5,8 para o fósforo - P e zinco - Zn e 8,2 para a demanda química de oxigênio - DQO, nitrogênio - N e cobre -Cu; a melhor concentração de biomassa de 0,0013 g/mL para a DQO, o N, P e Zn e 0,0053 g/mL para o Cu e a agitação de 30 rpm para a DQO e N e 120 rpm para o P, Zn e Cu. Para o Cd obteve-se remoção de 100% em praticamente todos os ensaios, em virtude da baixa concentração inicial deste metal. Os resultados obtidos permitiram concluir que nas melhores condições operacionais a biomassa seca da Salvinia sp. influenciou positivamente no processo, alcançando 97,91% de remoção de DQO, 99,96% de P e 99,67% de N, com concentração inicial de 20.480, 121,6 e 350 mg/L, respectivamente. Além disso, os resultados mostraram o caráter promissor da Salvinia sp. como biossorvente, sendo capaz de adsorver até 76,70% de íons de Zn, 99,79% de Cu e 100% de íons Cd, em resíduos líquidos industrias contendo pequena concentração de metais pesados. Os ensaios com as isotermas de adsorção de Zn e Cu indicaram que a capacidade de biossorção do cobre e zinco foram aproximadamente de 0,70 e 0,50 meq/g em pH 5,0, sendo que o melhor ajuste ocorreu com a Isoterma de Sips.

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Paula, Márcia Cristina de. "Coleoptera aquáticos associados à macrófita Salvinia Séguier, 1754 em ambientes lênticos no Estado de São Paulo". Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/1842.

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Universidade Federal de Sao Carlos
Coleoptera is the largest and most diverse order among the Insecta with approximately 400,000 species, the majority terrest, however about 12 thousand species are aquatic. In order to know the Coleoptera fauna associated with the aquatic macrophytes of the genus Salvinia in lentic environments, this study was conducted in two chapters: the first, Coleoptera associated with Salvinia in four oxbow lakes belonging to two watersheds and the second, the Coleoptera fauna associated with Salvinia auriculata in the dam Beija-Flor. The collects were made monthly over a year in two oxbow lakes to Paranapanema River, in the municipality of Angatuba-SP, in two oxbow lakes to Mogi-Guaçú River and in dam Beija-Flor, in the Ecological Station of Jataí, in the municipality of Luiz Antônio-SP. To collect the macrophytes was used a circular sampler with area 0.07 m² and mesh 0.25 mm aperture. The results indicate that there is greater similarity between the communities of Coleoptera of the lakes that are inserted into the same flood plain and, the connectivity between river and lake is not decisive for the richness and abundance of aquatic Coleoptera fauna. The values of the analysis of the richness and abundance of aquatic Coleoptera typically vary with the species of aquatic macrophytes used by these insects as substrate. The Coleoptera fauna presented several and uniforms during, mainly, the warmer periods of the year. In Brazil, studies on Coleoptera associated with macrophytes in lentic environments is currently scarce, thus, this work contributes to the previous knowledge of the ecology of this fauna in southeastern São Paulo State.
Coleoptera constitui a maior e mais diversa ordem entre os Insecta com aproximadamente 400 mil espécies, sendo a maioria terrestre, entretanto cerca de 12 mil espécies são aquáticas. Com o objetivo de conhecer a fauna de Coleoptera associados à macrófita aquática do gênero Salvinia em ambientes lênticos, este trabalho foi desenvolvido em dois capítulos: o primeiro, Coleoptera associados à Salvinia em quatro lagoas marginais pertencentes a duas bacias hidrográficas e o segundo, a fauna de Coleoptera associada à Salvinia auriculata na represa do Beija-Flor. As coletas foram realizadas mensalmente ao longo de um ano em duas lagoas marginais ao Rio Paranapanema, no município de Angatuba-SP, em duas lagoas maginais ao Rio Mogi- Guaçú e na represa do Beija-Flor, na Estação Ecológica de Jataí, no município de Luiz Antônio-SP. Para a coleta das macrófitas utilizou-se um amostrador circular com 0,07 m² de área de abertura e rede com malha de 0,25 mm de abertura. Os resultados indicaram que há maior similaridade entre as comunidades de Coleoptera das lagoas que estão inseridas na mesma planície de inundação e que, a conectividade entre rio e lagoa não é determinante para a riqueza e abundância da fauna de Coleoptera aquáticos. Os valores das análise da riqueza e da abundância de Coleoptera aquáticos variaram tipicamente com as espécies de macrófitas aquáticas utilizadas por esses insetos como substrato. A fauna de Coleoptera se apresentou diversa e uniforme durante, principalmente, os períodos mais quentes do ano. No Brasil, estudos sobre Coleoptera associados à macrofitas aquáticas em ambientes lênticos atualmente é escasso, assim, este trabalho vem contribuir para o conhecimento prévio da ecologia dessa fauna na região sudeste do Estado de São Paulo.

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Kamatou, GPP, Zyl RL Van, H. Davids, Heerden FR Van, ACU Lourens y AM Viljoen. "Antimalarial and anticancer activities of selected South African Salvia species and isolated compounds from S. radula". Elsevier, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000518.

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Extracts of seventeen Salvia species used in traditional medicine in South Africa were subjected to biological testing. The potential ability to inhibit the in vitro growth/proliferation of Plasmodium falciparum (FCR-3 strain) and the cytotoxic effects on three human cancer cells [breast adenocarcinoma (MCF-7), colon adenocarcinoma (HT-29) and glioblastoma (SF-268)] and a human kidney epithelial cell line were investigated. The extracts displayed antimalarial activity with IC50 values ranging from 3.91 to 26.01 μg/ml and S. radula displaying the most favorable activity. Two compounds were subsequently isolated from the active fraction of S. radula and identified as betulafolientriol oxide and salvigenin. The two compounds displayed similar or lower antimalarial activity (IC50 values: 4.95 and 24.60 μg/ml, respectively) compared to the crude solvent extract. The concentration required to inhibit 50% of cancer cells ranged between 9.69 μg/ml and 43.65 μg/ml, and between 8.72 μg/ml and 59.12 μg/ml against the MCF-7 and SF-268 cell lines, respectively. The IC50 values determined for the HT-29 cell line ranged from 17.05 to 57.00 μg/ml, with S. lanceolata being the most active. The samples also displayed some degree of toxicity when tested against the human kidney epithelial cells, with IC50 values ranging from 12.12 to 53.34 μg/ml. The in vitro antimalarial and anticancer activities support the historic and present use of Salvia species in traditional medicine.

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Kamatou, GPP, Zyl RL Van, Vuuren SF Van, AC Figueiredo, JG Barroso, LG Pedro y AM Viljoen. "Seasonal variation in essential oil composition, oil toxicity and the biological activity of solvent extracts of three South African Salvia species". Elsevier, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000526.

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Aromatic plants contain both volatile and non-volatile fractions and the chemical composition of these two fractions may be influenced by seasonal changes. The essential oil and solvent extracts of S. africana-caerulea, S. africana-lutea and S. lanceolata, collected at the same locality throughout the 2005 growing season, were compared in terms of essential oil composition, yields and biological activities. Mostly quantitative, rather than qualitative variationwas observed in the oil composition of each species.Major fluctuations in the composition of S. africana-caerulea oil included limonene (2–33%) and viridiflorol (2–24%). Levels of α-pinene (1–12%), myrcene (2–12%) and α-eusdesmol (trace-13%) fluctuated seasonally in the S. africana-lutea oil. In S. lanceolata, considerable changeswere noted for β-caryophyllene (1–19%), β-caryophyllene oxide (1–21%) and ledol (3–12%). The extract prepared from S. lanceolata harvested inwinterwas more active against Gram-positive bacteria. The S. africana-caerulea extract exhibited the most favourable antiplasmodial activity when harvested in winter (IC50 value: 12 μgml−1), which contrasts with the lowest anti-plasmodial activity of S. lanceolata obtained at the same period (IC50 value: 43 μgml−1). The anti-oxidant activity of the solvent extracts also displayed variation over seasons with thewinter collection of S. africana-lutea yielding the most favourable anti-oxidant activity (IC50 value: 10 μg ml−1). All the solvent extracts prepared from the winter collection exhibited the lowest toxicity (20bIC50 valuesb60 μg ml−1), while the three essential oils obtained from autumn collection were more toxic (0.03bIC50 valuesb0.4 μg ml−1).

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Kamatou, GPP, Vuuren SF Van, Heerden FR Van, T. Seaman y AM Viljoen. "Antibacterial and antimycobacterial activities of South African Salvia species and isolated compounds from S. chamelaeagnea". Elsevier, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000837.

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Extracts of 16 South African Salvia species commonly used in traditional medicine to treat various microbial infections were investigated for in vitro antibacterial and antimycobacterial activities using the micro-dilution and respiratory BACTEC method, respectively. The microorganisms tested include two Gram-positive (Staphylococcus aureus and Bacillus cereus); two Gram-negative (Escherichia coli and Klebsiella pneumoniae) bacterial strains and the common pathogen responsible for tuberculosis, Mycobacterium tuberculosis. Extracts of the majority of species exhibited moderate to good antibacterial activity with minimum inhibitory concentration (MIC) values ranging from 0.03 to 8.00 mg/ml. Promising activity was observed against M. tuberculosis (MIC≤0.50 mg/ml) with S. radula, S. verbenaca and S. dolomitica displaying the most favourable activity (MIC: 0.10 mg/ml). The antibacterial bioassay-guided fractionation of S. chamelaeagnea resulted in the isolation of four compounds: carnosol, 7-O-methylepirosmanol, oleanolic acid and its isomer ursolic acid as the active principles against S. aureus. The in vitro antibacterial and antimycobacterial activities may support the use of Salvia species in traditional medicine to treat microbial infections.

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Libros sobre el tema "Salvinia sp"

Universitas Lambung Mangkurat. Kelompok Program Studi Lingkungan., ed. Telaah ekologik terhadap kehadiran kiambang (Salvinia sp) di perairan waduk sekitar Riam Kanan, Kalimantan Selatan: Laporan penelitian. Banjarbaru: Kelompok Program Studi Lingkungan, Pusat Penelitian, Universitas Lambung Mangkurat, 1993.

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Capítulos de libros sobre el tema "Salvinia sp"

Silvas, Flávia Paulucci Cianga, Erika de Faria Gusmão, Daniella Cardoso Buzzi, Ivo André Homrich Schneider, José Roberto de Oliveira, Denise Crocce Romano Espinosa y Jorge Alberto Soares Tenório. "Salvinia sp Allied to AMD Treatment: Equilibrium Time and Biomass Characterization". En TMS2013 Supplemental Proceedings, 585–91. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663547.ch73.

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Silvas, Flävia Paulucci Cianga, Erika Gusmäo, Daniella Cardoso Buzzi, lvo Andre Homrich Schneider, Jose Roberto de Oliveira, Denise Crocce Romano Espinosa y Jorge Alberto Soares Tenorio. "Salvinia sp Applied to AMD Treatment: Equilibrium Time and Biomass Characterization". En EPD Congress 2012, 443–50. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118359341.ch53.

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Azimova, Shakhnoza S. y Anna I. Glushenkova. "Salvia sp." En Lipids, Lipophilic Components and Essential Oils from Plant Sources, 501. London: Springer London, 2012. http://dx.doi.org/10.1007/978-0-85729-323-7_1578.

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Bortoletto, Edmilson Cesar, Felipe de Souza Silva y João Vitor Costa de Almeida. "Uso de wetland com a macrófita aquática Salvinia sp no tratamento do efluente de parboilização de arroz". En Tópicos em Ciências Agrárias – Volume 7. Editora Poisson, 2020. http://dx.doi.org/10.36229/978-65-5866-039-2.cap.12.

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Actas de conferencias sobre el tema "Salvinia sp"

SANTOS, G. H. F., A. N. MÓDENES, A. P. OLIVEIRA, I. G. O. BEZERRA, M. E. BRAGIÃO y A. R. TASCHIN. "APROVEITAMENTO DA MACRÓFITA SALVINIA SP. E DO PALITO DE ERVA-MATE COMO MATERIAIS ADSORVENTES DE CORANTE". En XX Congresso Brasileiro de Engenharia Química. São Paulo: Editora Edgard Blücher, 2015. http://dx.doi.org/10.5151/chemeng-cobeq2014-0511-25166-180236.

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Figueiredo, A. M. T. A., G. J. A. Figueiredo y V. L. A. Lima. "O Uso da Biomassa Seca da Planta Aquática Salvinia sp. no Tratamento de Efluentes de ETAs para Fins Agrícolas". En II Inovagri International Meeting. Fortaleza, Ceará, Brasil: INOVAGRI/INCT-EI/INCTSal, 2014. http://dx.doi.org/10.12702/ii.inovagri.2014-a724.

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