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Evaluation of the potential acaricidal of the hexanic extract of Trichilia pallida SW. (Sapindales: Meliaceae) leaves and essential oil of Sesamum indicum Linn. (Lamilaes: Pedaliaceae) seeds against larval instar of Rhipicephalus sanguineus (Lat.) (Acari: Ixodidae) Repositório Alice
AMARO, N. B.; CASTRO JUNIOR, L. C. de; INÁCIO, C. de O.; LELES, R. N.; D'ALESSANDRO, W. B.; FREITAS, E. F. de; MARQUES, E. F.; VIEIRA, P. C.; FAZOLIN, M.; FERNANDES, F. de F..
Este trabalho objetiva verificar os potenciais das plantas Trichilia pallida e Sesamum indicum na prospecção de acaricidas botânicos, para serem utilizados como nova alternativa para controle do ixodídeo Rhipicephalus sanguineus. O extrato hexânico (e.h.) de folhas de T. pallida e o óleo essencial de sementes de S. indicum foram obtidos em laboratório, a partir de amostras coletadas, respectivamente, em uma área de Mata Atlântica e em fazendas de cultivo no Brasil. Larvas de R. sanguineus foram obtidas a partir de fêmeas ingurgitadas, coletadas em ambientes urbanos naturalmente infestados. Os bioensaios foram realizados em quadruplicata, a 27 ± 1oC, RH ? 80% e fotoperíodo de 12 horas. Cerca de 50 larvas, de 14 a 21 dias de idade, foram acondicionadas em...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Catiguá; Baga de morcego; Trichilia pallida; Extractos de hojas; Brown dog tick.; Plagas y parásitos de animales; Plaguidicas botánicos; Aceites esenciales; Semilla de sésamo; Sésamo; Gergelim; Sesamum Indicum; Acaricida; Semente; Óleo Essencial; Folha; Produto de Origem Vegetal; Parasito de Animal; Larva; Carrapato.; Sesame seed; Animal parasites and pests; Leaf extracts; Botanical pesticides; Acaricides; Rhipicephalus sanguineus.; Essential oils.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114809
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Interactions among insect-resistant soybean genotypes extracts with populations of Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) susceptible and resistant to its nucleopolyhedrovirus Anais da ABC (AABC)
Piubelli,Giorla C.; Moscardi,Flávio; Hoffmann-Campo,Clara B..
Anticarsia gemmatalis nucleopolyhedrovirus (AgMNPV) is being used in Brazil as a biological insecticide. Host plant resistance of soybean to insects is been searched for and some authors have mentioned the interference of plant chemistry in virus efficiency. Interactions among soybean extracts of genotypes used as a source of resistance (PI 274454 and PI 227687) with different AgMNPV concentrations in populations of A. geatalis susceptible (S) and resistant (R) to the virus were studied at laboratory condition. Higher mortality was observed when larvae fed on diets with extracts of the soybean genotypes compared with those fed on a plain diet (control). The mean lethal concentration (LC50) was reduced about 10 ties in the S-population fed on diets...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Velvetbean caterpillar; Baculovirus; Leaf extracts; Resistant genotypes; Soybean.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000400021
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Metabolic responses and β-carotene production by the unicellular green alga Dunaliella salina exposed to leaf extracts Acta Botanica
Einali,Alireza; Mazang-Ghasemi,Sahar; Valizadeh,Jafar; Noorozifar,Meisam.
ABSTRACT The present work investigated the effects of aqueous extracts of eucalyptus ( Eucalyptus globulus) and elderberry ( Sambucus ebulus) leaves on β-carotene productivity in Dunaliella salina, a green microalga. Leaf extracts from eucalyptus have greater amounts of phenolics and flavonoids, as well as greater ferric reducing antioxidant potential than elderberry. The extracts of both species greatly inhibited growth of algal suspensions. However, chlorophyll and β-carotene concentration increased in cells treated with leaf extracts, and the highest values were detected in 1 % eucalyptus and 2 % elderberry extracts. Fresh weight, total sugar, and protein content significantly increased following exposure of cells to different doses of leaf extracts....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Β-carotene; Dunaliella salina; Eucalyptus; Elderberry; Leaf extracts; Metabolites; Stress.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200180
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New seminal variety of Stevia rebaudiana: Obtaining fractions with high antioxidant potential of leaves Anais da ABC (AABC)
MILANI,PAULA G.; FORMIGONI,MAYSA; DACOME,ANTONIO S.; BENOSSI,LIVIA; COSTA,CECÍLIA E.M. DA; COSTA,SILVIO C. DA.
ABSTRACT The aim of this study was to determine the composition and antioxidant potential of leaves of a new variety of Stevia rebaudiana (Stevia UEM-13). Stevia leaves of UEM-13 contain rebaudioside A as the main glycoside, while most wild Stevia plants contain stevioside. Furthermore can be multiplied by seed, which reduces the cost of plant culture techniques as other clonal varieties are multiplied by buds, requiring sophisticated and expensive seedling production systems. Ethanol and methanol were used in the extraction to determine the bioactive compounds. The methanolic extract was fractionated sequentially with hexane, chloroform, ethyl acetate and isobutanol, and the highest concentration of phenolic compounds and flavonoids was obtained in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioactive compounds; Glycosides; Leaf extracts; Phenolic compounds; New cultivar of Stevia.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401841
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Phytochemical Analysis, Antifungal, Antimicrobial Activities and Application of Eichhornia crassipes Against Some Plant Pathogens Planta Daninha
HAGGAG,M.W.; ABOU EL ELLA,S.M.; ABOUZIENA,H.F..
ABSTRACT Water hyacinth (Eichhornia crassipes) is an oceanic macrophyte and one of the worst sea-going weeds in the world and Egypt. The grouping of substantial metals in water hyacinth was higher in roots than in shoots. Nutrient content e.g. ammonia, nitrate, nitrite and phosphate was higher in the shoots of water hyacinth. Water hyacinth is a wellspring of phytochemicals which have a medicinal function. In this study, the high degree of peroxidation and nonenzymatic antioxidant systems were detected in leaf extracts. The chemical analysis of the leaf extracts was performed using acetone, ethanol, methanol and n-Butyl alcohol. The fractionated extracts showed the presence of some medicine compounds that include phenols, protein, alkaloids, amino acids,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antifungal and antimicrobial; Biofungicide; Eichhornia crassipes; Leaf extracts.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100229
Registros recuperados: 5
Primeira ... 1 ... Última
 

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