Purple sweet potato, cherry tomato, colored corn, colored pepper, these fruits and vegetables are genetically modified? At the market scene, Weibo WeChat platforms are often asked by consumers about these issues.
In fact, the natural plant species are rich and varied. About 12,000 years ago, human agriculture and settled life began. Civilization and humanity continued to acclimatize plants. Finally, they screened and nurtured these varieties that we eat daily. Some of the plants that we are currently seeing are less common in color and traits, many of which are hybrids or are naturally found in nature.
The vast majority of globally developed GM crops, especially those that have been approved for commercial planting (that is to say, can be circulated into our table), are mostly transferred to "insect-resistant" or "resistance to herbicides". Genes, these characteristics are difficult to distinguish from the appearance. Everything teaches you to distinguish GM from the appearance, it is all in rogue!
Naturally endowed our food with sufficient diversity, there is no need to blindly resist and panic in the face of our unfamiliar species. Today's city fair will introduce several common "picked up" ingredients.
1 Douchi No. 1 | Purple Sweet Potato The purple sweet potato was successfully bred by Japanese researchers in the late 1990s and was introduced to China in 2002. Purple sweet potato and eggplant, blueberries, and grapes contain many anthocyanins. Purple sweet potato is also rich in anti-cancer substances, selenium, iodine, calcium, zinc content is also high, is one of the ideal health food.
2 Douchi No. 2 | Small tomatoes have many aliases, cherry tomatoes, cherry tomatoes, because the head is too mini, often discussed "is it right?" In fact, it is a part of the tomato family. The tomatoes we usually eat are cultivars, and the small tomatoes are the ancestors of cultivated tomatoes.
3 Sinus 3 | Cut open potatoes Potatoes should be placed in water after cutting, otherwise they will turn black! Probably everyone listened to parents when they were playing in the kitchen when they were young. The potatoes turn black because of the oxidative browning reaction of polyphenols. The degree of this reaction is related to many factors, such as the potato variety, ah, storage conditions, temperature and time after cutting. There are relationships. All in all, because blackening affects aesthetics (the bizarre aesthetic taste of humans++) breeders have been working on cultivating potato varieties that are not easily oxidized and darkened, and they can be completely cultivated through traditional breeding methods.
4 Dou Su 4 | Do not germinate soy often hear people say that the current soybeans are not budding, it is certainly genetically modified, right? Actually, soybeans do not germinate for two reasons. One is the "Terminator" technique. This technique is simply: soak soybean seeds in tetracycline solution before planting so that seeds can normally produce soybeans. However, the harvested soybeans cannot germinate again. Why do you have such a reckless technology? In fact, this is a method that seed companies in foreign countries have come up with in order to allow farmers to purchase new seeds every year. However, Terminator technology has nothing to do with genetic modification, and our country currently prohibits the application of this technology in seed industry. In addition, the real reason why soybeans do not germinate is that your soybeans may have died. For example, soybeans will die after being stored at low temperature for too long. Soybeans will die if their fat content is too high. Soybean protein activity will also be too low. . . In short, your soy bean is really vulnerable to die.
5 Douchi No. 5 | Caijiao Pepper has different colors because it contains different types of anthocyanins. Variations of anthocyanins are common in plants, and there are different colors in the same species as flowers. In fact, China has approved the commercial cultivation of anti-virus sweet peppers. Officials have given explanations that compared with conventional sweet peppers, GM sweet peppers have no obvious advantage and have been eliminated by the market.
6 Dou Tao No.6 | Black Peanut Black Peanut is because the gene that controls the color of peanut skin is different from that of red skin. This gene exists in nature and is not a contribution of transgenic technology.
7 Dou Tao No. 7 | Color corn is also because of the special color, so that everyone has doubts, but in fact is also a breed selected by hybridization, and has nothing to do with genetically modified.
8 Douyu No.8 | Red Heart Dragon Fruit Dragon Heart Dragon fruit is a subspecies of dragon fruit. This purple fruit pulp dragon fruit was first discovered by the French in its natural environment. Similar to purple sweet potato, it is the pulp of red heart dragon fruit. It is also rich in anthocyanins, so it shows the bright purple color we see.
Well, if we have not dispelled everyone's doubts, let's look at an extreme example - carrots.
If I say that the initial carrot is yellow or purple instead of orange, you must think I am crazy. Actually, “crazy†is a Dutch-wild carrot that has been domesticated as a vegetable in West Asia for a long time, long time ago, but it is not orange. Later, the Netherlands started to rise. The trade and gardening is double-hearted, and the carrots are bred into the Dutch royal family. Color - orange, and spread around the world. The time for discoloration is probably around the 17th century, when there was certainly no genetically modified technology. The above crops are actually equivalent to carrots 400 years ago. Of course, no one doubts that carrots are genetically modified.
Bakelite sheet or Electricity board, is also called plastic board, phenolic laminated cardboard, is to use quality bleached wood product paper and cotton wool as reinforcing material, with high purity, total synthesis reaction of petrochemical raw materials of phenolic resin as a resin adhesive made of wood.
Features:
At normal temperature, the electrical performance is good, the mechanical processing performance is good, the proportion is 1.45, the warp degree is less than 3 ‰, with good electrical, mechanical and machining properties.
The paper board is the most common laminate and the most widely used industrial laminate in the world.
Main features: good mechanical strength, anti-static, intermediate electrical insulation, is made of bakelite impregnated paper with phenolic resin, baked and hot pressed.
This product is suitable for mechanical and electrical equipment, which can be used in transformer oil.
Good mechanical strength, suitable for PCB drilling with gasket, distribution box, fixture board, die plywood, high and low pressure distribution box, packaging machine, comb, etc.
Applicable to motor, mechanical mould, PCB and ICT tools.
Molding machine, drilling machine, mesa grinding pad [1] board.
Application area of imported wood board: applicable to PCB drilling, silicon rubber mould.
Tools, switchboard, electrical machinery parts.
I. Define and purpose
Bakelite Sheet is a hard, dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with phenolic resin. These layers of laminations are usually of cellulose paper, cotton fabrics, synthetic yarn fabrics, glass fabrics or unwoven fabrics. When heat and pressure are applied to the layers, a chemical reaction (polymerization) transforms the layers into a high-pressure thermosetting industrial laminated plastic.
II. Technical requirement for surface
The surface shall tidy and smooth, bubble, impurity are not allowed. But slight scratch and color punctum are allowed. Edge is to be cut smooth. The delamination and crackle on the end surface are not allowed. The surface shall tidy and smooth, bubble, impurity are not allowed. But slight scratch and color punctum are allowed. Edge is to be cut smooth. The delamination and crackle on the end surface are not allowed .
III. Characteristics
♦ High mechanical properties, and oil resistance and certain dielectric property.
♦ Thermal rating is 120, and temperature resistance :130 centidegrees
VI. Application
Chemical machine parts , general machine parts and gear ,and generators, Pads, base, baffle etc.. Generator ,transformer, fixture, inverter, motor and electric insulation component.
Specification: The thickness of Bakelite Sheet material can be produced from 3mm to 50mm,the usual specification of 3-50mm is 1000mm* 2000mm, Bakelite Sheet can also be customized according to requirements, and the width can exceed 1220mm, and the length is not limited
Color: Black,red, can also be made another color, and the color order is 500KG.
Modified varieties: Bakelite Sheet can be added to the fiberglass, copper powder and molybdenum disulphide to enhance the bar.
Add antistatic agent to the permanent antistatic electric bar, and the volume resistance value is between 6 to 9 power of 10.
Add flame retardant to flame retardant rod from UL 94V-0 to HB flame retardant grade. Other modification requirements are customized according to customer's actual use.
Product certification: Bakelite Sheet most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.
Bakelite Sheet
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Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com