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| Vega-Gálvez,Antonio; Dagnino-Subiabre,Alexies; Terreros,Gonzalo; López,Jessica; Miranda,Margarita; Di Scala,Karina. |
| Drying kinetics of quinoa-supplemented feed for laboratory rats during processing at 50, 60, 70, 80 and 90ºC was studied and modeled in this work. Desorption isotherm was obtained at 60ºC giving a monolayer moisture content of 0.04 g water/g d.m. The experimental drying curves showed that drying process took place only in the falling rate period. Several thin-layer drying equations available in the literature were evaluated based on determination coefficient (r²), sum squared errors (SSE) and Chi-square (χ2) statisticals. In comparison to the experimental moisture values, the values estimated with the Logarithmic model gave the best fit quality (r² >0.994, SSE < 0.00015 and χ2 < 0.00018), showing this equation could predict very accurately the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rat feed; Quinoa; Drying kinetics; Modeling; Statistical test. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000100021 |
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| Ansorena,María Roberta; Agüero,María Victoria; Goñi,María Grabriela; Roura,Sara; Ponce,Alejandra; Moreira,María del Rosario; Di Scala,Karina. |
| During postharvest, lettuce is usually exposed to adverse conditions (e.g. low relative humidity) that reduce the vegetable quality. In order to evaluate its shelf life, a great number of quality attributes must be analyzed, which requires careful experimental design, and it is time consuming. In this study, the modified Global Stability Index method was applied to estimate the quality of butter lettuce at low relative humidity during storage discriminating three lettuce zones (internal, middle, and external). The results indicated that the most relevant attributes were: the external zone - relative water content, water content , ascorbic acid, and total mesophilic counts; middle zone - relative water content, water content, total chlorophyll, and ascorbic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Butter lettuce; Quality indices; Shelf life; Mathematical modeling; Weibull distribution. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000200024 |
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