Browsing by Author "Osorio, D"

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    Rigorous dynamic modeling and simulation of wine distillations
    (ELSEVIER SCI LTD, 2004) Osorio, D; Perez Correa, R; Belancic, A; Agosin, E
    A novel simulation strategy for dynamic distillation of complex mixtures, such as wine, is proposed and evaluated in terms of computing efficiency and accuracy. The model developed describes wine distillation as a multicomponent reactive batch distillation process. The simulation approach transforms the system of differential algebraic equations (DAE) into a set of ordinary differential equations, by pre-solving the algebraic equations and replacing them with artificial neural networks.
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    Wine distillates: Practical operating recipe formulation for stills
    (AMER CHEMICAL SOC, 2005) Osorio, D; Perez Correa, JR; Biegler, LT; Agosin, E
    Consumer perceptions of flavors are associated with the chemical composition of foods. However, consumer preferences change; therefore, it is necessary for food manufacturers to be able to adapt their products. Unlike in aged spirits, the chemical composition of young spirits is determined during distillation; therefore, this is where distillers must tailor their operating recipes to the new trends. Even for an experienced distiller, the complexity of the process makes adapting the operating recipe far from straightforward. In this study, we developed a methodology for generating practical recipes that makes use of computer simulations and optimization techniques. We used Pisco Brandy, a young Muscat wine distillate from Chile and Peru as our case study. Even so, because our methodology is independent of the chemical composition of the broth, it can be applied throughout the industry. Drawing on the experience and preferences of industry enologists, we designed a preferred distillate and used our methodology to obtain the appropriate recipe, This recipe was validated in lab scale experiments, and we obtained a much closer distillate to the desired prescription than commercial products.