Cabbage is a variant of crucifer cabbage. The leaves are firm and bright, elliptical or oblong, about 30 cm long, green in color. Leaf base gradually narrowed into petiole, petiole narrow. Cabbage is native to China and cultivated everywhere. It is planted most widely in the south and is available throughout the year, with the most in spring and summer.
The nutritional value of cabbage is similar to that of cabbage. It contains protein, fat, sugar, dietary fiber, calcium, phosphorus, iron, carotene, vitamin B1, vitamin B2, nicotinic acid, and vitamin C. Higher.
Cabbage production skills
1. You can fry, cook, stir, mix, grind, etc. You can also make soup and stuffing.
2. When cutting cabbage, cut it well so that the cabbage is easy to cook.
3. It is not advisable to use boiled boiled water and squeezed juice after cooking so as to avoid substantial loss of nutrients.
4. The Chinese cabbage must not be heated in boiling water for a long time. The best time is 20 to 30 seconds. If it is too hot, it will be too hot and it will not taste good.
5. Chinese cabbage produces toxins during the decay process. The nitrites produced can lose the ability of hemoglobin in the blood to carry oxygen and cause severe hypoxia and even life threats.
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.
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