Comparison of Vacuum Treatments and Traditional Cooking Using Instrumental and Sensory Analysis

The purpose of this work was to compare carrots with similar firmness cooked by traditional cooking and two vacuum treatments: sous-vide (SV) and cook-vide (CV). As a first step, consumers determined the preferred level of firmness for carrots cooked by traditional cooking (boiling). This level corresponded to instrumental firmness of 2.8 N in phloem tissue and 4.1 N in xylem tissue. Response surface methodology (RSM) established the pairing conditions of time (22 to 78 min) and temperature (78 to 92 °C) to study the effect of both factors on the firmness of carrots with sous-vide and cook-vide treatments. In both treatments, the instrumental firmness of phloem and xylem samples was measured and modeled. No significant differences were found in firmness values between phloem and xylem tissue of samples cooked by vacuum treatments (CVand SV). For CV treatment, firmness decreased linearly with time and temperature, while for SV treatment it followed a second-order model. Based on the model, conditions of time and temperature to achieve the preferred firmness (2.8 N) were selected for both treatments. Finally, consumers compared the sensory properties of carrots cooked by traditional cooking, sous-vide, and cook-vide with paired comparison tests evaluating three pairs of samples. Carrots cooked by cook-vide were considered less tasty than sous-vide and traditional cooking carrots. Carrots using traditional cooking were firmer than those obtained with SV and CV treatments. Carrots cooked by traditional and sous-vide treatments were preferred to cook-vide ones for the taste.Consuelo Iborra- Bernad has received research grant from the Generalitat Valenciana. Amparo Tarrega was financially supported by the Juan de la Cierva program. Purificacion Garcia-Segovia declares that she has no conflict of interest. Javier Martinez-Monzo declares that he has no conflict of interest. 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The development of adaptive modified appearance using operating window methods for optimizing electron beam

[[abstract]]The purpose of this article is to address the applications of an operating window with a Taguchi-fuzzy logic design in conducting a reduced number of experiments to yield the optimal conditions and to develop robust melted bead properties of the electron beam (EB) process. The effects of parameters produced on a window on EB bead surface are studied, and dimensions of operating window using travel speed while adding different noise factors are identified. Using ANOVA, significant factors are identified and accounted for nearly 75% of the total variance. The defects can be reduced by widening an operating window. The experimental results show that, an extensive analysis of the quality of the results can be obtained with the successful optimization of functional characteristics. This new strategy allows one to design, simulate, and optimize a system, and accurately performs in a group of characteristics