Evaluation of the microbiological and physical-chemical quality of salted bovine meat marketed in establishments and free fairs in the north zone of Rio de Janeiro

2018 ◽  
Vol 6 (4) ◽  
pp. 65
Author(s):  
Julio Cesar Queiroz Penha ◽  
Robson Maia Franco ◽  
Maria Carmela Kasnowski Holanda Duarte ◽  
Katia Christina Leandro
2019 ◽  
Vol 11 (16) ◽  
pp. 223
Author(s):  
Newton C. Santos ◽  
Sâmela L. Barros ◽  
Shênia S. Monteiro ◽  
Semirames do N. Silva ◽  
Victor H. de A. Ribeiro ◽  
...  

The objective of this study was to perform the kinetics of peach drying and to adjust the experimental data obtained to empirical and diffusive mathematical models to evaluate the effect of temperature on the physical-chemical quality of the final product. The drying experiments were performed in an air circulation dryer with a velocity of 1.5 m s-1, the drying kinetics were performed at temperatures of 60, 70 and 80 °C. Among the mathematical models applied, the Page model was the one that best fit the experimental data, because it presents greater efficiency in the description of the drying process. The decrease in the drying rate from the initial time to the end of the process was observed, increasing the temperature of the air caused a reduction in the drying time. It was verified through the analytical solution of the diffusion equation with infinite wall geometry that the increase of the drying temperature caused the increase of the diffusivity and convective coefficient of heat transfer. Through the Biot number, it can be stated that the first-type boundary condition would also describe the process satisfactorily. The fresh peach slices present high water content and water activity and the drying effect caused significant differences in all physical-chemical parameters analyzed.


2021 ◽  
Vol 4 (3) ◽  
pp. 61-71
Author(s):  
Antonia Mirian Nogueira de Moura Guerra ◽  
◽  
Ítalo José da Silva Rodrigues ◽  

The objective was to evaluate the production and post-harvest quality of fruit from grafted and non-grafted tomatoes. The experiment was carried out in a randomized block design with five treatments (Jiloeiro, Berinjeleira, Jurubeba, 'Intacto' rootstock and the witness the cherry tomato without grafting) and 16 replicates. In the evaluation of physical-chemical quality, the experiment followed a randomized block design in a 5x2 factorial scheme (rootstocks and storage temperatures, 10 ºC and room temperature) four replications. For a better productive contribution of the cherry tomato, the use of rootstocks from Jurubeba and Intacto is indicated, however, the use of a rootstock did not contribute to the durability and physicochemical characteristics of the fruit. When conditioned at 10 ºC, the fruits showed a better visual and physical-chemical aspect in relation to the ambient temperature, with increased durability of the product in all treatments.


2020 ◽  
Vol 147 ◽  
pp. 01013
Author(s):  
Latif. Sahubawa ◽  
B. Triyatmo ◽  
E. Ambarwati

Fish farming activities produce large amounts of waste which is disposed to environment. It contains with ammonia and nitrite as toxic substances to aquatic biota. On the other hand, it also contains nitrate as macronutrient which is useful for vegetables. Aquaponics system provides multiple benefits, namely the production of fish and organic vegetables as by-products that potentially to be a source of income. The objectives of the research were to analyse physical-chemical quality of red tilapia aquaculture and cultivated vegetable in aquaponics system, fish farm wastewater discharge for vegetable cultivation, bioconversion of aquaculture wastewater for growing vegetable biomass, and the bioeconomic of the system. The physical-chemical quality from water body of the system were as followed pH= 7.2 7.6; Temperature = 27,4 28,0ºC ; EC = 392.0 400.0 µs/cm; TDS = 180.5 189.7 ; NO3= 3.751 5.266 mg.L-1. The total biomass of green mustard in recirculating system was 92.50 kg/tray unit and in dripping system was 138 kg/tray unit. In one harvest period of red tilapia, the production of green mustard biomass was 1,152.5 kg, with an economic value of IDR 8,643,750.00 and IDR 1,680,000.00 for the red tilapia biomass.


2013 ◽  
Vol 36 (2) ◽  
pp. 113-120 ◽  
Author(s):  
José-Neptalí Hernández-Yépez ◽  
María-José De La Haba ◽  
María-Teresa Sánchez

2012 ◽  
pp. 385-388 ◽  
Author(s):  
A.F. Brighenti ◽  
L. Rufato ◽  
A.A. Kretzschmar ◽  
J.L. Marcon Filho ◽  
L.M. Brighenti ◽  
...  

2017 ◽  
Vol 8 ◽  
pp. 73-78
Author(s):  
Pedro Henrique ◽  
Adalgisa Aranha ◽  
Edgley Soares ◽  
Renan Dantas ◽  
Neuza Cioffi ◽  
...  

2013 ◽  
Author(s):  
Soraya de Carvalho Neves ◽  
Adolf Heirich Horn ◽  
Lucio Mauro Soares Fraga

Os solos, sedimentos de corrente e águas superficiais são considerados como componentes do sistemageoquímico natural dentro da bacia hidrográfica e, portanto, com a caracterização geoquímica é possívelefetuar uma avaliação da qualidade química ambiental da sub-bacia do Ribeirão das Pedras. A rede dedrenagem dessa sub-bacia tem como substrato rochoso seqüências do Supergrupo Espinhaço, rochas doSupergrupo Rio Paraúna, além de intrusões metaígneas associadas. O contexto geomorfológico inclui eventosde deposição e denudação das superfícies de aplainamento, ora preservados no topo dos divisores de águas.Esta sub-bacia foi selecionada para estudos devido às suas características de ocupação urbana e pelo fatode adentrar em uma unidade de conservação. Os dados geoquímicos regionais foram utilizados como basecomparativa para os resultados das análises na sub-bacia. As análises físico-químicas de solos, sedimentosde corrente e água foram realizadas em períodos das estações seca e chuvosa. Os resultados foram tratadosestatisticamente e comparados com valores padrões definidos pela legislação ambiental. Estabeleceu-seatravés das análises um padrão natural relativamente alto para o ferro e alumínio. Nas amostras de águassuperficiais e sedimentos de corrente foram detectadas contaminações pontuais de cádmio, chumbo emercúrio, que podem ser relacionadas, em geral, à atividade garimpeira ou à expansão urbana. Nos solosforam encontradas concentrações naturais de arsênio, zinco, cobre e bário relacionados à composição dasrochas aflorantes na região.Palavras-chave: água, solos, metais pesados. ABSTRACT: Geochemistry environment of the River of the Stones sub-basin, Diamantina, MG.The soils, stream sediments and surface water are considered as component of the natural geochemical systeminside the hydrographic basin and, therefore, with the geochemistry characterization it is possible to effectan evaluation of the environment chemical quality of the sub-basin of River of the Stones. The draining netof this sub-basin has as bedrock sequences of Supergroup Espinhaço, rocks of Supergroup Paraúna River,beyond associating intrusive igneous rocks. The geomorphology context includes events of deposition anddenudation of the uplands, however preserved in the top of the watersheds. This sub-basin was selected forstudies due to its characteristics of urban occupation and for the fact of getting into a unit of conservation. Theregional geochemical data had been used as comparative base for the results of the analyses in the sub-basin.The physical-chemical analyses of soils, stream sediment and water had been carried through in periods ofdry and rainy seasons. The results had been dealt statistically and compared with values standards definedfor the environmental legislation. It was established through analyses a natural standard relatively high forthe iron and aluminum. In the sample of superficial waters and stream sediments it had been detected promptcontaminations of cadmium, plumb and mercury that can be related, in general, to mining activities or theurban expansion. In the soil it was found natural concentrations of arsenic, zinc, cupper and barium relatedwith the rock’s composition in the region.Key words: water, soils, heavy metals.  


2020 ◽  
Vol 9 (2) ◽  
pp. 218
Author(s):  
Putri Yanesya ◽  
Betti Janusari ◽  
Zenna Azerine Kalista ◽  
Dini Junita

Jenang, or what is often called dodol, slab, or gelamai, includes dense, chewy, half-processed products. Jenang, which was innovated from chayote, has a relatively short shelf life, which is only able to survive 3-5 days at room temperature (27ºC). Therefore, a good packaging is needed that can extend the shelf life of one of them is edible coating, which is the packaging of edible materials. Edible coating is one of the efforts that can be done to maintain the quality of a food. The purpose of this study was to determine the quality and estimation of chayote with and without edible jenang based on physical, chemical, and microbiological parameters. In this study using the analysis of water content, peroxide numbers, and total microbes and using the edible dip method. From the research it can be seen that the chayote jenang based on physical quality in edible samples can maintain the water content so that the texture remains elastic compared to without edible until the 15th day. Based on the chemical quality in jenang squash with edible, oxidation only occurred after storage on the 22nd day. Microbiological quality in the conjoined pumpkin jenang coated with edible or without edible was overgrown with a total amount of yeast mold ≥300,000 Cfu / g.


2021 ◽  
Vol 43 (5) ◽  
Author(s):  
Gabriel Stefanini Mattar ◽  
Luís Felipe Villani Purquerio ◽  
Laura Maria Molina Meletti ◽  
Sílvia Regina de Toledo Valentini ◽  
Laís Fernanda de Paula ◽  
...  

Abstract The use of advanced seedlings associated with the annual cultivation of passion fruit are important management techniques for living with the fruit-hardening virus (FEV). However, this technology still needs information on nitrogen fertilization and spacing between plants, so that it is possible to recover crop’s productivity. The objective of this research was to identify the nitrogen dose (N) and the most suitable spacing for annual orchards installed with advanced seedlings (1.2 m high) of yellow passion fruit. The experiment was carried out in the field, in Mogi Mirim, SP, between October 2017 and July 2018. A randomized block design was used in subdivided plots; the treatments were doses of N in coverage such as 0, 60, 120, 180 and 240 kg ha-1 and spacing between plants of 2.0 and 4.0 m and 3.0 m between lines. The dose found for maximum production, 15.4 kg of fruit pl-1, and adequate physical-chemical quality of the fruit for the yellow passion fruit was 130.7 kg ha-1 of N. The most densified spacing, of 2 x 3 m, provided greater productivity and number of thousand fruits per hectare, respectively, 20.7 t ha-1 and 139.5 thousand fruits ha-1.


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