Instant watermelon peel and preparation method thereof
A watermelon rind and epidermis technology is applied in the field of ready-to-eat watermelon rind and its preparation, and can solve the problems of long preparation time of watermelon rind, increased cost of watermelon rind, and unfavorable long-term storage and transportation.
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Embodiment 1
[0073] Embodiment 1: the impact of blanching and color protection technology on instant watermelon rind
[0074] Pretreatment: select fresh watermelon rind as the raw material, remove the skin and red flesh from the watermelon rind, and cut it into blocks with a width of 1.5cm and a length of 3cm;
[0075] (1) Hot blanching and color protection process: Put the pretreated watermelon rind into the boiling water of the color protection agent and scald it for 30-180s, cool it quickly with supercooled water, and then put in 3% H 2 o 2 Soak, observe the color, smell, tissue state, and catalase activity of the watermelon rind to select the appropriate blanching time. The results are shown in Table 1.
[0076] (2) Selection of color-protecting agent: pour the pretreated watermelon rind into the boiling water of 0.4% citric acid, ascorbic acid and cysteine and scald it for 90s, remove it and cool it with supercooled water quickly, and use the watermelon rind Color, odor, tissue st...
Embodiment 2
[0088] Embodiment 2: the impact of crispness preservation process on instant watermelon rind
[0089] Soak the watermelon rind after blanching and color protection treatment in calcium chloride solution with a mass concentration of 0.5, 1.0, and 1.5g / L for 20, 30, and 40 minutes, remove it, rinse it quickly, drain it, and test its color and taste. 1. The sensory evaluation of the tissue state, the results are shown in Table 4.
[0090] Table 4
[0091]
[0092] It can be seen from Table 4 that the brittleness of watermelon rind increases with the increase of CaCl2 solution concentration, but with the increase of CaCl2 solution concentration, the mouthfeel becomes worse, with obvious fiber feeling and astringent taste. Therefore, soaking watermelon rind in 0.1% CaCl2 solution for 30 minutes will give the best texture and taste of watermelon rind.
Embodiment 3
[0093] Embodiment 3: the impact of pickling process on instant watermelon rind
[0094] The brittle watermelon rinds were pickled in salt with mass concentrations of 50, 70, and 100 g / L for 10 minutes, and then removed for sensory evaluation and microbial detection. The results are shown in Table 5.
[0095] table 5
[0096]
[0097] It can be seen from Table 5 that the total number of bacteria decreases with the prolongation of pickling time, but the prolongation of pickling time will also cause the increase of saltiness. Therefore, 10 minutes of pickling with 7% salt is the best.
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