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| Registros recuperados: 172 | |
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| Kan,Cornelis Adriaan. |
| The title may raise questions about definitions of the terms used. The more obvious ones are: 1) What is transfer? 2) How to define toxic; and 3) How to define feed or food. A more underlying question is how to measure the substances we are interested in. The (often) chemical methods used, are not always sensitive or specific enough. Sometimes, biologically based methods are used which detect a biological response, but seldom identify the compound responsible for that. Transfer is often not quantified in absolute terms but expressed in concentrations in feed and food. Mass balance between intake and excretion are quite rare as a steady state situation of residues in the animal is sometimes not obtained. Toxicity is mostly dependent on the concentration of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carry-over; Feed; Food; Risks; Toxic substances; Transfer. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001300042 |
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| Vargas,Carlos Henrry Bellot; Almeida,Armando Antunes de. |
| The identification of insect fragments showed that the infestation was done, mainly, by Coleoptera of the genus Sitophilus Schnherr, 1838 (Curculionidae) and Rhizoperthadominica (Fabricius, 1792) (Bostrychidae), that are caracteristic of internai infestation, and in lesser percentage by insects charac-teristic of externai infestation, as Crylolestes spp. (Cucujidae), Tribolium spp. (Tene-brionidae), Oryzaephilussurinamensis(Linnacus, 1758) (Cucujidae) and Lasioderma serricorne (Fabricius, 1792) (Anobiidae). From the total of recovered and identified insect fragments, 59% were fragments of elytra, 23% of mandibles, and in minor percentage by tarsal segments, claws, tibial spurs, legs, tarsus, eyes, antennae, exuviae and larvae urogomphi. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insect fragments; Food; Identification; Micromorphology. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000300021 |
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| Carvalho,Cory T. de; Vasconcellos,Luiz E. M.. |
| The most frequent endoparasite of the Maned wolf - Chrysocyon brachyurus (Illiger, 1815) is the giant kidney-worm. Dioctophyma renale (Goeze, 1782). It has heen responsible for the majority of deaths of captive animals. Twenty-six marked wolves have been followed in the field with ear-tags and radio-collar tagged (Tab. II) to investigate their interactions with the environment, their diurnal shelters, movements and habits, and their delivery sites. Ten years of life history data have heen gathered. They are territorial and monogamous, and give birth to two or three young once a year, after a 63 days gestation, on average. Maned wolves inhabit the open areas and have omnivorous feeding habits. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maned wolf; C. brachyurus; Life history; Disease; Food; Reproduction. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300018 |
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| Chaparro-Acuña,Sandra Patricia; Vargas-Moreno,Paola Andrea; Silva-Gómez,Leonardo Andrés; Cárdenas,Oswaldo Eliécer. |
| Abstract: Bioaccumulation of heavy metals such as cadmium has been a major concern in scientific communities and international food organizations, given the great toxicological risk to the consumer, and in many places there is no detailed record of its actual content. In this way, the need arises to carry out a study and registration of the concentration of this metal in products such as table chocolate, of great consumption at regional and national level. Likewise, we seek to have effective quantification tools and a reliable and affordable method to achieve the aim of this research. In this research, Cadmium content in powdered and granulated table chocolate was determined, elaborated and commercialized in the municipality of Chiquinquira,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food; Cocoa; Electrochemistry; Heavy metals; Validation. |
| Ano: 2017 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000200172 |
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| OLIVEIRA,Rodrigo Leonardo Costa de; SCUDELLER,Veridiana Vizoni; BARBOSA,Reinaldo Imbrozio. |
| ABSTRACT Byrsonima crassifolia and B. coccolobifolia, popularly known as mirixis, muricis, mantecos or nances, are common fruit species in the Amazonian savannas. Their fruits are used in the preparation of juices and other beverages, while the other parts of the plants are used for different purposes in some indigenous communities. The aim of the present ethnobotanical study was to investigate the knowledge and traditional uses of mirixis in the Darora Indigenous Community, of the Makuxi ethnicity, in the São Marcos Indigenous Land, state of Roraima, northern Brazil. The knowledge on these species among the residents was analyzed considering their gender and age. A survey was carried out by means of semi-structured interviews with 60 respondents (36 men... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fuel-use; Food; Medicinal plants; Plant conservation; Northern Brazilian Amazon. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000200133 |
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| Teló, Gustavo Mack; Marchesan, Enio; Zanella, Renato; Peixoto, Sandra Cadore; Prestes, Osmar Damian; Oliveira, Maurício Limberger. |
| The objective of this study was to analyse residues of fungicides and insecticides in rice grains that were subjected to different forms of processing. Field work was conducted during three crop seasons, and fungicides and insecticides were applied at different crop growth stages on the aerial portion of the rice plants. Azoxystrobin, difenoconazole, propiconazole, tebuconazole, and trifloxystrobin fungicides were sprayed only once at the R2 growth stage or twice at the R2 and R4 growth stages; cypermethrin, lambda-cyhalothrin, permethrin, and thiamethoxam insecticides were sprayed at the R2 growth stage; and permethrin was sprayed at 5-day intervals from the R4 growth stage up to one day prior to harvest. Pesticide residues were analysed in uncooked,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.01.-6 Oryza sativa L.; Food; Gas chromatography; Pesticides; Grains quality Manejo e Tratos Culturais. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30594 |
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| Aguiar, Luzyanne Varjão; Pedreira, Márcio dos Santos; Silva, Herymá Giovane Oliveira; Caires, Dirlane Novais; Silva, Abias Santos; Silva, Lázaro Costa da. |
| We evaluated the effect of inclusion of fine mesquite pod meal (FPM) in the diet on performance, preference and palatability of diets in feedlot lambs. Five diets were formulated with increasing levels of FPM (0, 1.5, 3.0, 4.5 and 6.0%). For performance evaluation, the design was completely randomized with five treatments and seven replications. For palatability and preference analysis, the same design was used, but the treatments consisted of diets with 0 and 3% FPM and fourteen replications. The palatability was assessed considering the amount of feed consumed within 30 min., and the preference, considering the feed intake after 24 hours. FPM had no influence on weight gain, but caused a reduction in intake and an increase in dry matter digestibility for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zootecnia additive; Food; Intake; Digestibility; Average daily gain; Sheep.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/27804 |
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| Vidigal, Tiago Mateus Andrade; Landivar, Elaine Eloiza Cortellini. |
| Consuming raw food like lettuce may carry protozoa cysts and helminth eggs, causing parasitic infections. Therefore, the parasitological analysis of this type of food it’s important for public health because it provides data on the hygiene conditions in which these vegetables were produced, transported, processed and handled until the ingestion. This study aimed to evaluate the occurrence of parasitic structures in samples of lettuce (Lactuca sativa) sold in self-service restaurants in São Miguel do Oeste, Santa Catarina State, Brazil. The samples were randomly collected in 20 locations in duplicate, prepared according to the method of Hoffman, Pons, and Janer (1934) and analyzed with an optical light microscopy. The parasitic structures found were Cysts... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protozoa; Helminths; Contamination; Food; Vegetables.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35027 |
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| Destri, Kelli; UFPEL; Bairros, Jacqueline; UFPEL; Vargas, Bianca Languer; UFPEL; Nascente, Patrícia da Silva; UFPEL; Del Pino, Francisco Augusto Burkert; UFPEL; Lund, Rafael Guerra; UFPEL. |
| O consumo de doce de leite caseiro, vendido em feiras livres, é comum no Estado do Rio Grande do Sul. Geralmente, estes produtos não são fabricados em acordo com as boas normas de fabricação e podem constituir perigo à saúde do consumidor. O objetivo do presente estudo foi analisar, microbiologicamente, amostras de doce de leite comercializado nas feiras livres da cidade de Pelotas, Estado do Rio Grande do Sul, conforme legislação em vigor da Agência Nacional de Vigilância Sanitária – Anvisa, e, dessa forma, verificar as condições sanitárias do produto em questão. Foram adquiridas, aleatoriamente, amostras de doce de leite de feiras livres existentes na cidade de Pelotas, Estado do Rio Grande do Sul, Brasil. Das 12 feiras cadastradas na prefeitura de... |
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Palavras-chave: 2.00.00.00-6 Ciências Biológicas contaminação bacteriana; Saúde pública; Alimentos Microbiologia Aplicada contamination by bacteria; Public health; Food. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/676 |
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| Iweka, Patricia; Kawamura, Shuso; Mitani, Tomohiro; Koseki, Shigenobu. |
| In the current dairy industry, an intensive demand for estrus detection and early diagnosis of pregnancy has been increasing. Progesterone is a steroid hormone that is secreted from corpus luteum into bovine blood and milk, and has a role of maintenance of estrus cycle and pregnancy. Therefore, progesterone concentration in bovine milk is used as an important indicator of estrus detection and early diagnosis of pregnancy. Current method for milk progesterone determination requires a hormone extraction procedure that is time consuming, various types of instruments, reagents management, and various assay methods that are destructive in nature. In contrast, near-infrared spectroscopy (NIRS) is a time saving and non-destructive analytical method that can be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food; Engineering; Bio-production; Postharvest. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5578 |
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| SANTOS,QUEILA O.; MORENO,ISLANIA; SANTOS,LEANDRO DOS; SANTOS,ALDENOR G.; SOUZA,VALDINEI S.; BEZERRA,MARCOS A.. |
| A modified simplex algorithm was used to optimize a system of preconcentration for cadmium determination in samples of sediments, cigarettes and food using flame atomic absorption spectrometry. The preconcentration system is based on the sorption of cadmium in a minicolumn packed with Amberlite XAD-2 resin functionalized with 3,4-dihydroxybenzoic acid (DHB). The optimized variables were pH and sampling flow rate and the optimum conditions found for these variables were, respectively 8.7 and 8.8 mL min-1. The developed system showed a preconcentration factor of 15.3, detection limit of 0.49 µg L-1, quantification limit of 1.65 µg L-1 and precision expressed as relative standard deviation (% RSD, n=10) of 5.9. The accuracy of the method was checked by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Simplex optimization; Preconcentration; Cadmium; Sediments; Cigarettes; Food. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300791 |
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| Panizzi,Antônio R.; Mourão,Ana P.M.. |
| Laboratory studies were conducted on mating, ovipositional rhythm, and fecundity of the southern green stink bug, Nezara viridula (L.) fed on immature fruits of privet, Ligustrum lucidum Thunb. and soybean, Glycine max (L.) Merrill. A greater number of pairs were observed mating on privet (27 to 37 %) than on soybean (22 to 23 %). The preoviposition period was significantly shorter when females fed on privet (15.5 days) than when they fed on soybean (23.9 days). The intervals of time between the first four ovipositions, and between the 1st and the 4th oviposition were shorter on privet than on soybean (range of 1.9 to 3.3 days less on the former food). Greater percentage of females N. viridula oviposited and showed greater fecundity on privet than on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Hemiptera; Reproduction; Copulation; Fecundity; Food. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000100003 |
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| Fakruddin,Md; Rahaman,Mizanur; Ahmed,Monzur Morshed; Hoque,Md Mahfuzul. |
| BACKGROUND: Cronobacter sakazakii is considered as an emerging foodborne pathogen. The aim of this study was to isolate and characterize virulent strains of Cronobacter sakazakii from food samples of Bangladesh. RESULT: Six (6) Cronobacter sakazakii was isolated and identified from 54 food samples on the basis of biochemical characteristics, sugar fermentation, SDS-PAGE of whole cell protein, plasmid profile and PCR of Cronobacter spp. specific genes (esak, gluA, zpx, ompA, ERIC, BOX-AIR) and sequencing. These strains were found to have moderately high antibiotic resistance against common antibiotics and some are ESBL producer. Most of the C. sakazakii isolates were capable of producing biofilm (strong biofilm producer), extracellular protease and... |
| Tipo: Journal article |
Palavras-chave: Cronobacter; Food; Virulent; Bangladesh. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100057 |
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| Colares,Ioni G.; Colares,Elton P.. |
| To determine the feeding habits of the Amazonian manatee Trichechus inunguis in some Central Amazonian rivers and lakes, we compared plant epidermis found in the stomach contents and/or faeces of animals with a reference collection of plants present in the studied areas. Twenty five samples from digestive tracts of animals found dead and 25 faeces samples found floating were analyzed. From these samples, 24 aquatic macrophytes were identified. The Gramineae family was identified in 96% of the samples, Paspalum repens and Echinochloa polystachya being the most abundant in the samples. The second most frequent family was the Pontederiaceae primarily Eichhornia crassipes. During the high water period, the animals showed a more selective diet (eight identified... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonian manatee; Trichechus; Food; Plants eaten; Amazon. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100011 |
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| Almeida,Rosana Macedo de; Barbosa,André Victor; Lisbôa,Rodrigo de Castro; Santos,André Felipe das Mercês; Hofer,Ernesto; Vallim,Deyse Christina; Hofer,Cristina Barroso. |
| ABSTRACT The herein presented assay provided a bacteriological and molecular characterization of 100 samples of L. monocytogenes isolated from human (43) and food (57) sources, from several regions of Brazil, and collected between 1975 and 2013. Antigenic characterization defined 49% of serotype 4b samples, followed by 28% of serotype 1/2b, 14% of serotype 1/2c, 8% of serotype 1/2a, and 1% of serotype 3b. Both type of samples from human and food origin express the same serotype distribution. Multiplex PCR analysis showed 13 strains of type 4b with the amplification profile 4b-VI (Variant I). Virulence genes hly, inlA, inlB, inlC, inlJ, actA, plcA, and prfA were detected in all samples, highlighting a deletion of 105pb on the actA gene in 23% of serotype 4b... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Listeria monocytogenes; Listeriosis; Virulence; Food; PFGE; Brazil. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300282 |
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| Registros recuperados: 172 | |
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