Ultrahigh-pressure refreshing method for maintaining quality of fresh lotus roots
A fresh-keeping method and ultra-high pressure technology, which are applied in the fields of fruit and vegetable fresh-keeping, food preservation, food science, etc., can solve the problems of lotus seed starch gelatinization, affecting fresh lotus, etc., and achieve good natural flavor and nutrition, convenient eating and easy to control. Effect
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Embodiment 1
[0034] (1) Harvesting of fresh lotus: "Jianlian" is used as raw material, the grains are full, the size is uniform, no pests and diseases, and the maturity is over 90%;
[0035] (2) Pretreatment: manually remove the shell, remove the film, and pass the core. After the treatment, put it in water at 10°C~15°C for cleaning, and drain it for later use;
[0036] (3) Color protection by dipping: Quantitatively weigh the compound color protection agent (0.1% ascorbic acid + 0.1% citric acid) and dissolve it to make a color protection solution. Immediately put the pretreated fresh lotus into the color protection solution to soak for color protection. Time 10min, wash and drain after dipping;
[0037] (4) Vacuum packaging: vacuum packaging the fresh lotus that has undergone color protection treatment;
[0038] (5) Ultra-high pressure treatment: put the vacuum-packed fresh lotus in an ultra-high pressure container for ultra-high pressure treatment, the treatment pressure is 500MPa, the...
Embodiment 2
[0042] (1) Harvesting of fresh lotus: "Jianlian" is used as raw material, the grains are full, the size is uniform, no pests and diseases, and the maturity is over 90%;
[0043] (2) Pretreatment: manually remove the shell, remove the film, and pass the core. After the treatment, put it in water at 10°C~15°C for cleaning, and drain it for later use;
[0044] (3) Color protection by dipping: Quantitatively weigh the compound color protection agent (0.15% ascorbic acid + 0.1% citric acid) and dissolve it to make a color protection solution. Immediately put the pretreated fresh lotus into the color protection solution to soak the color protection solution. Time 15min, wash and drain after dipping;
[0045] (4) Vacuum packaging: vacuum packaging the fresh lotus that has undergone color protection treatment;
[0046] (5) Ultra-high pressure treatment: put the vacuum-packed fresh lotus in an ultra-high pressure container for ultra-high pressure treatment, the treatment pressure is 1...
Embodiment 3
[0050](1) Harvesting of fresh lotus: "Jianlian" is used as the raw material, the grains are full, the size is uniform, no pests and diseases, and the maturity is 90%;
[0051] (2) Pretreatment: manually remove the shell, remove the film, and pass the core. After the treatment, put it in water at 10°C~15°C for cleaning, and drain it for later use;
[0052] (3) Dipping color protection: Quantitatively weigh the compound color protection agent (0.2% ascorbic acid + 0.2% citric acid) and dissolve it to make a color protection solution. Immediately put the pretreated fresh lotus into the color protection solution to soak the color protection solution. Time 20min, drain after soaking;
[0053] (4) Vacuum packaging: vacuum packaging the fresh lotus that has undergone color protection treatment;
[0054] (5) Ultra-high pressure treatment: Put the vacuum-packed fresh lotus in an ultra-high pressure container for ultra-high pressure treatment. The temperature of the liquid pressure med...
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