J Ethnopharmacol. May;56(3) Chemical composition and antimicrobial activity of Croton urucurana Baillon (Euphorbiaceae). Peres MT(1), Delle. Evaluation of the effect of aqueous extract of Croton urucurana Baillon ( Euphorbiaceae) on the hemorrhagic activity induced by the venom of Bothrops jararaca. Una ning gihulagway ni Henri Ernest Baillon. Ang Croton urucurana sakop sa kahenera nga Croton sa kabanay nga Euphorbiaceae. Pagka karon wala pay siak.
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Ants of the species Cylas formicarius Formicariidae were treated with C. It was found that the crude extract and ethanol-water fraction resulted in the lowest LC 50 and LC 95 values as well as these formulations also presented lowest LT 50 and LT 95 values among all the treatments, hence making these formulations most toxic among the tested ones against H.
Journal of Stored Products Research 40 Lethal concentration analyses showed that the ethanol-water fraction presented the lowest value of LC 50 ppm and LC 95 ppm and it was considered the most toxic fraction for H. If you would like to support this site, please consider Donating. Planta Medica 59 Similarly, Scalon et urucruana. Gikuha gikan sa ” https: The results showed no significant differences for the amount of food ingested and excrements produced, comparing larvae fed with control diet to those fed EMeOH Fig.
These authors observed that seeds criton in water for 12 hours or in KNO 3 had higher germination percentages and germination speed indexes with means that did not vary among themselves, but urjcurana and aerial portion lengths were higher when the seeds were treated with mg L -1 GA.
Drawing of the leaves and flowers Photograph by: Figure 2 Uruucrana showed that with the diet containing FDM food ingestion and excrements produced were reduced, with lower insect weight gain.
Drops of water were periodically sprinkled onto the sterilized sand in the dishes to maintain sufficient moisture for the termites. The low emergence percentages observed under greenhouse conditions on the first count may be explained by the fact that the seeds were exposed to temperature and humidity fluctuations that could reduce the speeds of the metabolic reactions necessary for crotton germination xroton emergence.
Field tests have confirmed their degradation and atoxicity from the fourth week onward Silva et al. Brazilian Archives of Biology and Technology 46, Considering the advancement of researches on the botanical insecticides and their potential for pest control and the need to find slow action products to crotkn incorporated into baits for control of subterranean termites, the objective of this study was to evaluate the potential termiticide of the ethanolic extract of bark of C.
Insect Biossays Colonies of A. Trypsin was present in all the degradation products from insects subjected to EMeOH and crude resin, as band intensity was reduced in the presence of TLCK. Only actively feeding larvae with guts filled with food were used. If you have any useful information about this plant, please leave a comment. Comparative Biochemistry Physiology C Euphorbiaceae decreased number of colonies of bacteria in the intestinal flora of termites in comparison with those from untreated termites.
Leaf ethyl acetate fraction.
Chemical composition and antimicrobial activity of Croton urucurana Baillon (Euphorbiaceae).
This phenolic compound binds readily with proteins to form a complex tannin-protein that reduces, significantly, the growth and survival of insects, once it turns off digestive enzymes and consequently makes it difficult the digestion Mello and Silva-Filho, Despite these favorable features, additional crroton studies on catechinic tannins must be carried out in order to evaluate their impacts, mainly on non-target species, and to identify the formulations that provided stability and easiness of management Silva et al.
The protein concentration in the extract was determined according to Bradford Larval midguts were surgically removed using tweezers. It is important to stress, however, that electrolyte release was greater in seeds that were stored at room temperature for days as compared to seeds stored under refrigeration for the same period of time.
Our current knowledge of the viability and storage potential of C. Plants growing in natural environments often have cyclical sequences of seed production with one episode of high productivity followed by one or two years of low seed set, making it important for growers to maintain seed viability during storage through urucuran use of specific technologies developed for each species Kissmann et al.
NN are the numbers of days following Maguire and Popinigis ; after each evaluation, two seedlings from each replication and treatment were evaluated to determine their fresh and dry weights. The present work verified the toxicity of C.
Ang Wikimedia Commons may mga payl nga may kalabotan sa: The eletrophoresis confirmed the data obtained from the midgut triptic activity, in which the larvae treated with EMeOH Fig. Previous chemical studies on this fraction resulted in the isolation urucuarna the phenolic compounds catechin and gallocatechin, which played a role in the insecticidal activity Peres et al. Last update on This process results in a loss of seed quality that is directly measurable by an increase of leachates in imbibed water.
According to Shirley condensed tannins, catechin and gallocatechin are phenolic compounds responsible for the astringency of many fruits as well as defense against the pests, as they attach to insects’ digestive proteins, becoming an important mechanism for the plant defense against the pathogens Oliveira et al. Traps were brought to the laboratory and the termites were transferred to plastic boxes containing moist soil.
Plantas medicinais no Brasil: Juss azadirachtin, salannin, and acetylgedunin, geduninthe main representatives of the terpernoid class with insecticidal activity, have significant effect on the larvae and pupae of Corton medinalis Lepidoptera: Stunning photographs of each species, brief details on the plant, its uses and how to grow it from seed. The fecal material did not allow the protein bands, corresponding to the enzymes to be well defined data not shown.
According to our results, C. Departamento Nacional de Defesa Vegetal, p. Calendula officinallis Silveira et al. Similar results were observed with the “farinha seca” seedlings Kissmann et al.
Moreover, toxicological studies performed in the rabbits, mice and guinea pigs have proved to be atoxic, according to the rules for plant products. Treatise on the isoptera of the world: Insect growth inhibitory nor-diterpenes, cis -dehydrocrotonin and trans -dehydrocrotonin, from Croton cajucara. Food ingestion and utilization by the insects was determined according to Parra Tan-awa ang Mga Termino sa Paggamit para sa mga detalye. Year ISBN Description An extremely concise book, listing approximately 1, species and varieties of plants with their botanical name, common name in Brazil, regions in Brazil where the plant is crotpn, a brief list of uses and any medically active compounds in the plant.
Male flowers Photograph by: