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| Registros recuperados: 11 | |
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| Hafezi, Negar; Sheikhdavoodi, Mohammad Javad; Sajadiye, Seyed Majid. |
| The effect of drying behaviour on the drying rate and quality characteristics of potato slices in a vacuum-infrared drying system was studied. In this research, the effect of the infrared radiation powers (100, 150, and 200 W) and vacuum levels (20, 80, 140 mmHg and atmosphere pressure) at different slice thickness (1, 2 and 3 mm) on drying rate and shrinkage percentage and rehydration capacity were investigated. It was concluded that infrared radiation power amount has a significant effect on processing time and drying rate. With increasing radiation power, drying time is reduced and consequently drying rate is increased. The drying rate curve of potato slices at initial drying time is in the ascending phase because of surface moisture evaporation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Potato; Drying rate; Vacuum; Infrared radiation; Shrinkage; Rehydration. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3583 |
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| Djordjević,Jasna; Bošković,Marija; Starčević,Marija; Ivanović,Jelena; Karabasil,Nedjeljko; Dimitrijević,Mirjana; Lazić,Ivana Branković; Baltić,Milan Ž.. |
| Abstract The effect of different modified atmosphere packaging regimes on the behavior of Salmonella spp. on minced meat was studied. Minced meat was experimentally contaminated with a Salmonella spp. cocktail (S. Enteritidis, S. Typhimurium, S. Infantis and S. Arizonae), packaged under vacuum or modified atmosphere with initial headspaces containing 20%O2/50%CO2/30%N2 and 20%O2/30%CO2/50%N2) and stored at 3 ± 1 °C for 12 days. Samples were analyzed for Salmonella spp., viable and lactic acid bacteria count every third day. Salmonella spp. counts decreased during storage in all packaging types, with reductions of about 1.5 log CFU/g. A significant difference (p < 0.01) was noted between Salmonella spp. counts in meat packaged in vacuum and modified... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Minced meat; Modified atmosphere packaging; Vacuum; Salmonella; PH. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000300607 |
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| Giampietro-Ganeco,Aline; Borba,Hirasilva; Scatolini-Silva,Aline Mary; Boiago,Marcel Manente; Souza,Pedro Alves de; Mello,Juliana Lolli Malagoli de. |
| Eggs are perishable foods and lose quality quickly if not stored properly. From the moment of posture to the marketing of egg, quality loss occurs through gas exchange and water through the pores of the shell with the external environment and thus, studies involving modified atmosphere packaging are extremely important. The aim of the present study is to assess the internal quality of eggs packed under modified atmosphere and stored at room temperature. Six hundred and twelve fresh commercial eggs from 38-week old Hisex White laying hens were used. The present study was conducted in a completely randomized experimental design in a 4 x 4 + 1 factorial arrangement [vacuum, vacuum with oxygen gas (O2) absorbent, vacuum with oxygen gas (O2) and carbon dioxide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Storage; Sachet; Vacuum. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000100082 |
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| KUO,Chia-Hung; LIN,Jinqiong; HUANG,Chun-Yung; HSIEH,Shu-Ling; LI,Shaohua; KUO,Jen-Min; SHIEH,Chwen-Jen. |
| Abstract Watermelon rind, comprising 35% of the fruit’s total mass, usually discarded due to its unappealing flavor and lack of sweetness. In this study, candied watermelon rind was prepared through osmotic dehydration at vacuum (VOD) and atmospheric pressure (OD). The effects of independent variables (sucrose concentration, immersion time and temperature) on the dependent variables, including solid gain (SG) and water loss (WL) of watermelon rind, were evaluated using multiple response surface methodology. The SG and WL increased with the increasing sucrose concentration, immersion time and temperature for both VOD and OD, but VOD greatly increased the mass transfer rate. The kinetic constants were obtained by fitting the data of SG and WL to the Fick’s... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vacuum; Solid gain; Dehydration efficiency; Mass transfer kinetics; Response surface methodology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000500228 |
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| Santos,Rodrigo Marques dos; Barreta,Marcos Henrique; Frajblat,Marcel; Cucco,Diego Córdova; Mezzalira,Joana Claudia; Bunn,Silvério; Cruz,Fabiano Buss; Vieira,Arnaldo Diniz; Mezzalira,Alceu. |
| The objective of this study was to determine the effects of vacuum-cooled liquid nitrogen on the development of vitrified immature (germinal vesicle stage; GV) and mature (metaphase II; MII) bovine oocytes after re-warming. Liquid nitrogen was exposed to either atmospheric pressure or to a vacuum (300mm Hg for 45sec); the latter decreased the temperature of the liquid nitrogen to -200°C. Partially denuded oocytes were vitrified either just after selection (GV) or after 22 hours of in vitro maturation (MII) in TCM 199 medium + 10% of estrous mare serum. For vitrification, oocytes were firstly exposed to an intermediate solution (10% EG + 10% DMSO) for 30sec, followed by the vitrification solution (20% EG + 20% DMSO + 0.5M sucrose) for 20sec. Groups of three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitrification; Cryopreservation; Oocytes; Bovine; Vacuum. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000500024 |
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| Barrut, Bertrand; Blancheton, Jean-paul; Champagne, Jean-yves; Grasmick, Alain. |
| In aquaculture, oxygen transfer and carbon dioxide stripping are the first limiting factors to fish rearing intensification. In this study we measured the O-2 and CO2 mass transfer coefficient (K(L)a) for a vacuum airlift in fresh (<1% salinity) and sea water (35 parts per thousand salinity) recirculating aquaculture systems (RAS). The airlift was composed of two concentric tubes: an inner riser tube and an external downcomer tube and can be adjusted at three different heights: 2,4 or 6 m. Several types of air injectors were tested, delivering different sizes of bubble swarms depending on their porosity and functioning conditions (low or high injection pressure), with air flows varying from 0 to 80 L min(-1). Experiments were also carried out at... |
| Tipo: Text |
Palavras-chave: Mass transfer; Airlift; Vacuum; Aquaculture; RAS; Aeration; Degasification; Salinity. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00072/18324/16001.pdf |
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| Barrut, Bertrand; Blancheton, Jean-paul; Champagne, Jean-yves; Grasmick, Alain. |
| A study was undertaken to measure the water flow (Qw) delivered by a vacuum airlift designed for recirculating aquaculture systems (RAS) in fresh (<1‰ of salinity) and sea water (35‰ of salinity). The vacuum airlift consists of two concentric tubes connected at their top to a depression chamber. The water rises in the inner tube as a result of air being injected in its lower section and flows back through the external downcomer tube. The vacuum airlift was adjusted at three different lengths: 2, 4 or 6 m and water discharge could be lifted from 0 to 30 cm. Air flow rate (Qg) varied from 0 to 80 L min−1. Different types of air injectors were tested, delivering different bubble sizes (0.1–5 mm) depending on porosity and functioning at low or high... |
| Tipo: Text |
Palavras-chave: Water circulation; Airlift; Vacuum; Aquaculture; RAS; Salinity. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00073/18457/16005.pdf |
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| Registros recuperados: 11 | |
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