Physical fresh keeping method of wheat or rice
A fresh-keeping method and technology for wheat are applied in the field of physical fresh-keeping of wheat or rice, which can solve problems such as hidden dangers of food safety and loss of nutrients, achieve odor and nutritional value assurance, broad market application prospects, and significant antibacterial and insecticidal effects. Effect
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Embodiment 1
[0026] (1) Soaking and cleaning: immerse the peeled wheat in ultra-pure water to remove impurities and dust contained in the wheat, and then sonicate for 1 hour;
[0027] (2), draining, and air-flow blowing and mixing treatment: the treated wheat is kept away from light and drained quickly at a low temperature of 5°C, and then dried at 40°C and 60min with a mesh-belt type airflow dryer;
[0028] (3) High-pressure osmosis treatment: add 10ml mugwort essential oil into the heating chamber, promote the volatilization of mugwort essential oil at a constant temperature of 100°C, and use a high-pressure pump to pump the volatilized mugwort gas into the high-pressure air chamber containing 100g wheat , and pressurize the high-pressure chamber to ensure that the pressure in the high-pressure chamber is 10MPa. At this time, the mugwort essential oil gas is in an approximate supercritical state with a density of 0.68-0.85g / cm3, and the processing time is 50min;
[0029] (4), vacuum high...
Embodiment 2
[0033] (1) Soaking and cleaning: immerse the peeled rice in ultra-pure water to remove impurities and dust contained in the wheat, and then sonicate for 2 hours;
[0034] (2), draining, and air-flow blowing and mixing treatment: the treated rice is kept away from light and drained quickly at a low temperature of 15°C, and then dried at 60°C and 90min with a mesh-belt type airflow dryer;
[0035](3) High-pressure osmosis treatment: add 10ml mugwort essential oil into the heating chamber, promote the volatilization of mugwort essential oil at a constant temperature of 120°C, and use a high-pressure pump to pump the volatilized mugwort gas into the high-pressure air chamber containing 100g rice , and pressurize the high-pressure chamber to ensure that the pressure in the high-pressure chamber is 14MPa. At this time, the mugwort essential oil gas is in an approximate supercritical state with a density of 0.68-0.85g / cm3, and the processing time is 80min;
[0036] (4), vacuum high-v...
Embodiment 3
[0040] (1) Soaking and cleaning: immerse the graded wheat in ultrapure water to remove impurities and dust contained in the wheat, and then sonicate for 1.5 hours;
[0041] (2), draining, and air-flow blowing and mixing treatment: the treated wheat is kept away from light and drained quickly at a low temperature of 10°C, and then dried at 50°C and 75min with a mesh-belt type airflow dryer;
[0042] (3) High-pressure osmosis treatment: add 10ml mugwort essential oil into the heating chamber, promote the volatilization of mugwort essential oil at a constant temperature of 110°C, and use a high-pressure pump to pump the volatilized mugwort gas into the high-pressure air chamber containing 100g wheat , and pressurize the high-pressure chamber to ensure that the pressure in the high-pressure chamber is at 12MPa. At this time, the mugwort essential oil gas is in an approximate supercritical state with a density of 0.68-0.85g / cm3, and the processing time is 65min;
[0043] (4), vacuu...
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