Wednesday, February 13, 2019

Vacuum Impregnation to modify physico chemical properties and sensory attributes of olive fruits cv. Domat







Shortening the duration of debittering process. The authors carried out the dehydration process at various temperatures (30, 40 and 50 °C) and process duration (1, 2 and 3 h). The greatest losses of volatile compounds were recorded during osmotic dehydration in vacuum applied in both a continuous and pulsed manner at a temperature of 50 °C. The lowest total volatile losses occurred at 30 and 40 °C for up to 3 h under pulsed vacuum or atmospheric pressure. Changes in product quality are often associated with taste. It seems that this sensory quality attribute may also be modified by vacuum impregnation. It may be applied during the modification of the applied technological operation or as a process preceding freezing, minimal processing or candying. An example is provided by a study by Tamer et al. (2013), who applied vacuum impregnation with a solution of sodium chloride or sodium hydroxide and their mixture in order to shorten the length of the debittering process for green table olive cv. “Domat.



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