Plant cultivation method and plant application to make it contain salidroside
A technology of salidroside and cultivation method, applied in the field of biotransformation, can solve the problems of low salidroside yield, shortage of resources, complex chemical synthesis methods, etc., and achieve the effects of protecting the liver, enhancing immunity, and protecting cardiovascular
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Embodiment 1
[0046] Embodiment one, get Convolvulaceae water spinach, add tyrosol in the water body of its growth, make its initial concentration be 10mmol / L, detect the concentration of tyrosol once every 3~5 days, when down to 8mmol / L (80% of the initial concentration), add tyrosol to make the concentration reach 10mmol / L, and stop adding tyrosol when culturing until 5 days before harvest. After harvesting, the salidroside content (fresh weight) in water spinach can reach more than 0.20%.
[0047] Salidroside detection method: adopt high-performance liquid chromatography, take 0.5g of the sample to be tested, add 25ml of 50% methanol, weigh it, heat and reflux for 30 minutes, let it cool, make up the lost weight, filter, and use it as a test sample. Test solution. Take another salidroside reference substance, add 50% methanol to make a solution containing 0.05mg per 1ml, and use it as the reference substance solution. Octadecylsilane bonded silica gel is used as filler; methanol-water ...
Embodiment 2
[0048] Embodiment 2, get Compositae lettuce lettuce seeds, soak the seeds in clear water, sow in the sandy soil of the cultivation tray, keep moisture, after the cotyledons grow 2cm from the seeds, spray the seedlings with 1 / 10 concentration nutrient solution until 2 pairs of true leaves grow Afterwards, move in the nutrient solution of 1 / 2 concentration and cultivate, monitor the EC value (conductivity) of culture medium every day, when EC value drops to half of initial EC value, change full concentration nutrient solution culture (add 8mmol / L tyrosol), after the same when the EC value drops to half, just replace the full-concentration nutrient solution containing tyrosol, and harvest when the seedling reaches a height of more than 20cm, measure the content of salidroside, and its content (fresh weight) can reach up to 0.3% or more.
[0049] The nutrient solution adopts Hoagland’s formula, which is as follows: calcium nitrate tetrahydrate 945mg / L, potassium nitrate 607mg / L, ...
Embodiment 3
[0050] Embodiment three, get Compositae plant lettuce seedling, cultivate according to the conventional soilless culture method, after growing 3~5 true leaves, add tyrosol in the culture solution so that its concentration is 5mmol / L, every 3~5 leaves 15 days (the initial interval is 15 days, then gradually shorten the interval to 3 days) add tyrosol to the culture medium to make its concentration 5mmol / L, stop adding tyrosol 3 days before harvesting, so that the tyrosol can be converted completely, harvest After the lettuce, the content of salidroside was measured according to the above method, and its content (fresh weight) can reach more than 0.15%.
[0051] Commonly used green leafy vegetable nutrient solution formula is as follows: calcium nitrate tetrahydrate 1260mg / L, potassium sulfate 250mg / L, ammonium dihydrogen phosphate 350mg / L, magnesium sulfate heptahydrate 537mg / L, ammonium sulfate 237mg / L, boric acid 2.86mg / L, borax 4.5mg / L, manganese sulfate tetrahydrate 2.13mg...
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