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Registros recuperados: 9
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Atmósferas modificadas en modalidad de microperforado, enterobacterias y residuos de plaguicidas en nopal verdura (Opuntia ficus indica L.). Colegio de Postgraduados
Meraz Maldonado, Nora.
El nopal verdura es una hortaliza que aporta cantidades importantes de nutrimentos a la dieta en México. Sin embargo, cuando éste es usado como producto mínimamente procesado, la vida de anaquel se limita a los cambios en coloración de la piel y heridas pero, también debe ser considerada, dentro de la calidad, la inocuidad relacionada a la contaminación química y microbiológica. El presente estudio aborda éstos aspectos en seis capítulos que tienen por objetivos: 1) Determinar la predilección del consumidor en la adquisición de nopal verdura por tamaño, color, presentación, acidez y fibra. 2) Evaluar algunos cambios en la calidad por efecto del tamaño en nopal verdura entero desespinado. 3) Determinar el efecto de las atmósferas modificadas en la calidad...
Palavras-chave: Opuntia ficus-indica; Atmósferas modificadas; Salmonella; Escherichia coli; Malatión; Clorpirifos etílico; Entomología y Acarología; Doctorado; Modified atmospheres; Malathion; Chlorpyrifos ethyl.
Ano: 2012 URL: http://hdl.handle.net/10521/1819
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Effects of Malathion on Cellularity and Sperm Differentiation in Testis and Epididymis of Adult Rats International Journal of Morphology
Espinoza-Navarro,O; Bustos-Obregón,E.
Malathion is an organophosphorous insecticide, used worldwide for pest and disease control; however, it could also affect the reproductive patterns of several species. The aim of this study was to determine the effects of malathion in the cellularity and sperm differentiation in testis and epididymis of rats. Twenty adult male Sprague Dawley rats were divided into a malathion-treated group (n=10, dose of 170 mg/kg via subcutaneous injection for a period of 13 days) and control group (n=10, injected only with normal saline). After treatments, the rats were sacrificed by regulated euthanasia and assessed for sperm count in testis and epididymis and epididymal teratospermia degree. The results showed a significant decrease in body, testicular and epididymal...
Tipo: Journal article Palavras-chave: Reproduction; Rat; Malathion; Cytotoxicity.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100020
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Eficiência comparativa de inseticidas no controle das pragas do arroz armazenado no Estado do Acre. Infoteca-e
FAZOLIN, M..
No Brasil, as perdas de grãos durante o armazenamento têm atingido níveis médios de 20%. No Acre, devido as precárias condições de armazenamento e os fatores climáticos favoráveis ao desenvolvimento das pragas, os níveis de perdas são superiores a 30%. Os insetos têm sido os agentes responsáveis por essas perdas, causando prejuízos quantitativos determinados pela perda de peso e prejuízos qualitativos causados pela depreciação do produto devido a presença de ovos, larvas, pupas, adultos e alterações na composição química do produto, além de facilitar o desenvolvimento de micro-organismos. Nas condições locais, 35% do arroz armazenado é atacado pelo gorgulho (Sitophilus zeamais) e 65% pela traça (Sitotroga cereealella). No controle dessas pragas alguns...
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Maize weevil; Angoumois grain moth; Campo Experimental; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Arroz; Oriza sativa; Praga de planta; Gorgulho dos cereais; Sitophilus zeamais; Traça dos cereais; Sitotroga cerealella; Controle químico; Inseticida; Rice; Plant pests; Chemical control; Pesticides; Malathion; Plagas de plantas; Control químico; Plaguicidas; Malatión.
Ano: 1986 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492345
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Evaluation of biomarkers in oyster larvae in natural and polluted conditions ArchiMer
Damiens, Gautier; His, Edouard; Gnassia Barelli, Mauricette; Quiniou, Francoise; Romeo, Michèle.
Crassostrea gigas D-shaped larvae were subjected to different conditions of temperature and salinity for 24 h and four biomarkers (acetylcholinesterase (AChE) activity, thiobarbituric acid reactive substances (TBARS) levels, glutathione S-transferase (GST) and catalase (CAT) activities) were measured. AChE activity decreased when salinity increased from 25 to 30 and 35 psu at 20 and 25 degreesC. Temperature did not seem to have an influence on AChE activity. TBARS levels increased as a function of salinity when the temperature was maintained at 20 degreesC, whereas at 25 degreesC no effect of salinity could be observed. Variations in GST and CAT activities were not significant with salinity and temperature except that catalase activity was higher at 25...
Tipo: Text Palavras-chave: Malathion; Carbofuran; Abiotic factors; Crassostrea gigas; Mollusc larvae; Biomarker.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-686.pdf
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Malathion Affects Spermatogenic Proliferation in Mouse International Journal of Morphology
Penna-Videau,S; Bustos-Obregón,E; Cermeño-Vivas,J. R; Chirino,D.
The restriction of the mechanisms of cell proliferation in murine seminiferous epithelium, in terms of induction of programmed cell death until recently has not been fully analyzed. The aim of this work was to assess the effect of Malathion (MP) on testicular morphology and function in mouse spermatogenesis. For the experiments, male albino mice of strain NMRI-IVIC, weighing between 30-40 g were used, and divided into control and experimental groups of 5 each. The animals of the experimental groups were injected with a single dose of MP: 241mg/kg weight (1/12 LD 50 ) resuspended in 0.9% saline, intraperitoneally. Animals were sacrificed at 8.3, 16.6 and 33.2 days post-injection (first, second and third spermatogenic cycles). Testicular samples were...
Tipo: Journal article Palavras-chave: Malathion; Testis; Mouse; Apoptosis; Morphology; P53; Proliferation.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400023
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Morphometric Analysis of Mice Testicular Tubules after Administration of Malathion and Maca International Journal of Morphology
Bustos-Obregón,Eduardo; del Río,Fernando Costa; Sarabia,Luis.
Organophosphoric (OP) agropesticidas are amply used to increase food production. However, it has been verified that they induce alterations at testicular level related to the diminution of fertility in humans as in animals. On the other hand, different studies have been made to develop chemical or natural compounds that can induce an antagonistic effect to OP. In previous studies an extract from a plant, from the Peruvian Andes (Maca) has been recognized by its stimulating action on spermatogenesis. In the present study the effects of both external agents were evaluated on testicular sections of testis of adult male mice on a population of 52 mice CF1, divided at random in 4 groups (Control, Malathion, Maca, Malathion-Maca), with sacrifice intervals of...
Tipo: Journal article Palavras-chave: Testis; Morphometry; Mice; Malathion; Maca.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000200001
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Sobrevivência de podisus nigrispinus (heteroptera: pentatomidae) alimentados com pupas de tenebrio molitor (coleoptera: curculionidae) tratadas com malathion. Repositório Alice
SILVA, C. A. D. da.
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Percevejo predador; Malathion; Sobrevivência.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1000046
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SUBLETHAL DOSES OF MALATHION ALTER MALE REPRODUCTIVE PARAMETERS OF Eisenia foetida International Journal of Morphology
Espinoza-Navarro,Omar; Bustos-Obregón,Eduardo.
Malathion is an organophosphorate insecticide whose main acute poisonous effect is the inhibition of the enzyme acetylcholinesterase. This pesticide is widely used and has been reported to damage mice spermatogenesis. The objective of this work was to evaluate the toxic risk of malathion, earthworm Eisenia foetida (Annelida, Oligochaeta) like biological model was used and testicles and spermatozoa of animal controls and treaties were analyzed. Earthworms with developed clitellum were used and they were dewed with sublethal single doses of 0, 80, 150, 300 and 600mg of malathion for kilogram of soil (LD50 = 880mg/kg dry soil). Control groups were added only distilled water. Each group was analyzed 1, 5, 15 and 30 days post treatment. The results observed in...
Tipo: Journal article Palavras-chave: Eisenia foetida; Malathion; Cytotoxicity; Spermatozoa; Reproductive organs.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000400010
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Toxicidade do inseticida malathion ao percevejo predador podisus nigrispinus (heteroptera: pentatomidae). Repositório Alice
SILVA, C. A. D. da.
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Percevejo predador; Malathion; Mortalidade; Concentração letal.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1000049
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