1. Strictly control the retention of seeds.
Bitter cucumbers can be inherited, so when cucumbers are about to mature, select some of the melons on the surface to taste, and choose melons without bitterness to preserve seeds.
2. Balanced fertilization.
The use of nitrogen fertilizer should be controlled in the seedling stage, and then the amount of nitrogen fertilizer should be gradually increased. In the blooming and fruiting period, the ratio of nitrogen, phosphorus, and potassium absorption by cucumber is basically 5:2:6. If there is too much nitrogen or too little phosphorus and potassium, it is easy to produce bitterness .
3. Avoid high temperature.
When the ground temperature is above 30°C for too long, bitter melon will increase, so the temperature should be controlled.
Fourth, avoid drought.
In drought, bitter melons are more likely to be produced, so water them in time to avoid drought.
5. Actively control pests and diseases.
If the cucumber production environment is bad and the pests and diseases are serious, the bitterness of cucumber will increase. For cucumber common diseases, it is necessary to spray early to protect it.
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Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Herbal Medicine,Ginger Extract Powder,Hawthorn Berry Extract,Lycium Berry Fruit Extract
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