Matrine, also known as matricine, is an alkaloid extracted from the roots, stems and fruits of the leguminous plant Sophora flavescens by organic solvents such as ethanol. It belongs to the quinolizidine derivatives. It has the characteristics of specificity and naturalness.
Matrine can be quickly decomposed in nature, and the final products are carbon dioxide and water. It is a green and environmentally friendly insecticide.
Total matrine is a general term for all alkaloids of Sophora flavescens (the detection method of total matrine is titration method). Its main components include matrine, sophoracarpine, oxysophocarpine, sophoridine and other alkaloids, with the highest content of matrine and oxymatrine. Other sources are Sophora flavescens fruit, Sophora flavescens root and Sophora flavescens root aboveground parts. The appearance of pure products is off-white to white powder.
Application:
1. Diuretic effect Sophora flavescens, as a medicinal plant, has a history of more than 2,000 years in my country according to written records. Its main functions include clearing heat, diuresis, insecticide, and dehumidification.
2. Antipathogen effect In the test tube, the decoction has an inhibitory effect on tuberculosis at a high concentration (1:100). The decoction (8%) has different degrees of inhibitory effect on some common skin fungi in vitro.
3. Anti-hepatitis B and C virus effect of oxymatrine Oxymatrine has shown strong antiviral activity against HBV in vitro and in animal models, and also has anti-HBV effect in the human body. There have been many reports on its use in the treatment of chronic viral hepatitis.
Application in Agriculture ：
The matrine pesticide used in agriculture actually refers to all substances extracted from Sophora flavescens, called Sophora flavescens extract or total matrine. It is widely used in agriculture and has good control effects. It is a low-toxic, low-residue, and environmentally friendly pesticide. It mainly controls various pests such as pine caterpillars, tea caterpillars, and cabbage worms. It has multiple functions such as insecticidal activity, bactericidal activity, and plant growth regulation.
Features of matrine as a biological pesticide:
First, matrine is a plant-derived pesticide with specific and natural characteristics. It only acts on specific organisms and can be quickly decomposed in nature. The final products are carbon dioxide and water. Secondly, matrine is an endogenous chemical substance in plants that is active against harmful organisms. The composition is not single, but a combination of multiple groups with similar chemical structures and multiple groups with different chemical structures. They complement each other and work together. Third, because of the combined action of multiple chemical substances, matrine is not easy to cause harmful substances to develop drug resistance and can be used for a long time. Fourth, it will not directly and completely kill the corresponding pests, but control the number of pest populations without seriously affecting the production and reproduction of the plant population. This mechanism is very similar to the principle of pest control in the integrated prevention and control system obtained after decades of research after the side effects of chemical pesticide protection became prominent. In summary, the above four points show that matrine is significantly different from general highly toxic and highly residual chemical pesticides, and is very green and environmentally friendly.
Oxymatrine has a strong contact killing effect on cabbage worms, yellow-handed moths and elm leaf beetles, and the control effect on peach aphids, radish, pear aphids and wheat aphids is more than 90%.
Matrine has obvious control effects on young larvae of diamondback moth and tea black moth. Matrine can control cabbage worms, aphids, melon aphids, borers, ladybugs, beet armyworms, yellow-striped flea beetles, diamondback moths, blue leaf moths, leek maggots on vegetables, caterpillars, boat caterpillars, caterpillars, earwigs, red Chemicalbook spider wax scales, beetles, stink bugs, etc. on fruit trees, and various pests such as armyworms, wheat midges and locusts on grain crops. Matrine has biological activities such as contact killing, stomach poisoning, systemic absorption, repelling, refusal to feed, sterilization, drying and peeling, paralysis of the central nervous system, coagulation of insect protein, blocking of insect pores, and suffocation and death of pests. The target is large and it kills at multiple locations, which can inhibit the development of resistance and still have strong activity against pests that have already developed resistance.
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