Wednesday, February 13, 2019

Vacuum Impregnation to modify physico chemical properties and sensory attributes of litchi cv. Rose







Samples were sensory acceptable up to 24 days. The best effect was provided by the application of a solution containing ascorbic acid and calcium lactate. In turn, Shah and Nath (2008) observed an inhibition of enzymatic browning both in the case of soaking at atmospheric pressure in a solution containing cystein; ascrobic acid and 4-hexylresorcinol as well as during vacuum impregnation of minimally processed lychee. After impregnation the samples were frozen. A significant increase in sweetness was recorded in the apple slices. Samples, which had not been impregnated, were not sensorically acceptable, mostly due to considerable losses of cell sap. During the studies regarding the vacuum impregnation of lychee fruits with a hypertonic solution of sucrose containing cystein, ascorbic acid and 4-hexylresorcinol, Shah and Nath (2008) observed an extension of time, in which taste was considered desirable, by 4 days in comparison to samples impregnated at atmospheric pressure with a solution with no sucrose added.




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