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| Ferreira,João P. de L.; Castro,Deise S. de; Moreira,Inacia dos S.; Silva,Wilton P. da; Figueirêdo,Rossana M. F. de; Queiroz,Alexandre J. de M.. |
| ABSTRACT This study assessed the fitting of mathematical models to the convective drying kinetics of osmotically pre-dehydrated papaya cubes. Papaya cubes were subjected to osmotic dehydration in sucrose solutions at 40 and 50 ºBrix, at temperatures of 50 and 60 ºC, followed by complementary convective drying in forced air circulation oven under three temperatures (50, 60 and 70 °C) and constant air velocity of 1.0 m s-1. Ten thin-layer drying mathematical models were fitted to the experimental data. The increase in air temperature and the decrease in osmotic solution concentration resulted in increased water removal rate. Based on the statistical indices, the Two Terms model was the one that best described the drying kinetics of the samples for all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Osmotic dehydration; Effective diffusivity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300200 |
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| Kaur, Kulwinder; Kumar, Satish; Alam, Mohammad Shafiq. |
| The study on osmotic pretreatment of oyster mushrooms was carried out in order to remove the moisture prior to further mechanical drying. Three salt concentration level (10, 15 and 20 g/100 g), two temperature levels of osmotic solution (30 and 45°C) and constant solution to mushroom ratio of 10 (w/v) were selected and the observations on water loss and solid gain were taken at an interval of 30 min up to 300 min. The osmotically pretreated samples were further dried up to its equilibrium moisture content in a tray drier at 60°C and experimental data were fitted successfully using Page and Henderson & Pabis model. The osmo-convective dehydrated samples were evaluated for its quality parameters i.e. color (L, a, b, ∆E, C* and h°), rehydration ratio... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oyster mushrooms; Osmotic dehydration; Water loss; Solid gain; Drying; Quality. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2831 |
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| Silva,Tissiane Mayara da; Argandoña,Eliana Janet Sanjinez; Madrona,Grasiele Scaramal; Moraes,Izabel Cristina Freitas; Haminiuk,Charles Windson Isidoro; Branco,Ivanise Guilherme. |
| The objective of this work was (1) to develop a dehydrated pepper with 45% humidity, determining the drying curves for pepper, with and without osmotic pre-treatment and (2) to evaluate the influence of both drying and osmotic treatment on the content ascorbic acid (vitamin C) in fresh pepper and pepper with 45% humidity. The experiments were carried out using the peppers cut in half, with and without osmotic pre-treatment, followed by drying in an oven at 70 ºC. The results showed that the osmotic pretreatment did not influence the retention of ascorbic acid during the drying of pepper. The sensory analysis regarding the color, flavor, and texture attributes revealed that there was no difference in the acceptability. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum chinense; Ascorbic acid; Osmotic dehydration; Drying. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500016 |
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| Coimbra,Lívia Muritiba Pereira de Lima; Arruda,Hayanna Adlley Santos de; Machado,Erilane de Castro Lima; Salgado,Silvana Magalhães; Albuquerque,Sônia Sousa Melo Cavalcanti de; Andrade,Samara Alvachian Cardoso. |
| ABSTRACT: Sapodilla is an original fruit from Central America that is well adapted in all regions of the Brazilian territory. Despite its wide adaptation and acceptance in fruit markets, it is rare to find it outside tropical regions, partially because of its high perishability. The development of alternative, simple, and inexpensive methods to extend the conservation and marketing of these fruits is important, and osmotic dehydration is one of these methods. The main objective of this study was to determine the water and sucrose diffusion coefficients during the osmotic dehydration of sapodilla. This process was performed in short duration (up to 6h) to evaluate detailed information on water loss and solids gain kinetics at the beginning of the process... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osmotic dehydration; Mass transfer; Diffusion coefficient; Sapodilla. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800204 |
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| Azeredo,Henriette Monteiro Cordeiro de; Araújo,Fátima Beatriz Silva de; Garruti,Deborah dos Santos; Queiroz,Ana Amélia Martins; Pinto,Gustavo Adolfo Saavedra. |
| Fruit preservation by hurdle technology is based on combinations of low levels of various antimicrobial factors (hurdles) acting synergistically resulting in a shelf stable high moisture, fresh-like product. The objective of this work was to evaluate the stability of mango cubes obtained by combining the following hurdles: water activity reduction, pH reduction, and chemical preservation. Tommy Atkins mangoes, previously washed, sanitized and peeled, were cut into cubes of approximately 8 cm³. The cubes were osmotically dehydrated under stirring (150 rpm) at 46ºC in a sucrose solution at 65.5oBrix added with 2% citric acid and 0.2% potassium sorbate, during two hours. The product was drained, packed in low-density polyethylene bags and stored at room... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mango; Hurdle technology; Osmotic dehydration. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542005000200015 |
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