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March vegetables bloom,

Rapeseed is ripe in June,

Seed oil pressed in August.

After four seasons of sowing in autumn, storing in winter, growing in spring and harvesting in summer, a grain of rapeseed has matured, and through the processes of removing impurities, frying seeds, squeezing, filtering and settling, clear, transparent and mellow rapeseed has entered thousands of households.

Everyone has appreciated the beauty of rape blossoms and tasted the fragrance brought by rapeseed oil, so how much do you know about rapeseed oil? Today, small farmers invited Hu Qiong, a researcher from the Institute of Oilseed Crops, Chinese Academy of Agricultural Sciences, to listen to experts talk about rapeseed oil!

The name of rape

At the end of the Eastern Han Dynasty, Fu Qian wrote "Popular Wen", which recorded that "Brassica is called Hu Cai", and "Brassica" was the ancient rape in China, which was often used as a vegetable at that time.

Later, people gradually discovered that rape seeds can produce oil, so they bred Chinese cabbage rape which can extract oil through breeding and domestication. Rapeseed is also named after "oil".

How rapeseed becomes vegetable oil

Generally speaking, rapeseed oil extraction technology can be divided into "pressing" and "extraction".

"Squeezing" is the physical and mechanical squeezing of rapeseed by using squeezing equipment to produce oil, which can be divided into cold pressing and hot pressing, among which hot pressing is more commonly used.

"Hot pressing" means that rapeseed is heated by frying, steaming, etc., and then mechanically pressed to produce oil; "Cold pressing" means that rapeseed is pressed without baking or slightly heating, and the "crude oil" squeezed by cold pressing needs heating and dehydration before it can be filtered out into clear vegetable oil.

In contrast, hot pickled mustard tuber oil is rich in flavor because of the influence of high temperature; Cold mustard tuber oil is clear and beautiful in color, but light in fragrance.

"Extraction" is to soak or spray rapeseed with an organic solvent that can dissolve oil, so that the oil in the oil can be extracted.

In addition, it is popular to extract vegetable oil by "microwave pressing" on the market at present. This method uses microwave to heat rapeseed, which can better control the temperature and make the color of oil clear. At the same time, it is also conducive to the efficient release and dissolution of nutrients and oils in rapeseed, and plays a certain role in enhancing fragrance.

N reasons for choosing vegetable oil

In general, three kinds of rapeseed, Chinese cabbage rape, cabbage rape and mustard rape, can be used for oil extraction. However, because of the strong disease resistance and good quality of Brassica napus, most of them belong to double-low varieties (low erucic acid and glucosinolate content) and high oil yield, so they are mostly selected for oil extraction.

rap oil

　 　 　 Fatty acid composition balance: the fatty acid composition in rapeseed oil is relatively balanced, and the saturated fatty acid content in vegetable oil is the lowest, about 7%.

High oleic acid content: It is pointed out in the Dietary Guide for China Residents that oleic acid can reduce bad cholesterol and increase good cholesterol. In the eyes of experts, oleic acid is also an important indicator to measure whether an edible oil is more conducive to health. At present, the oleic acid content of most vegetable oils sold in the market can reach 60%, and the oleic acid content of rapeseed oil with high content can even reach more than 70%, which can well meet the public’s demand for oleic acid.

Reasonable ratio of linoleic acid to linolenic acid: According to the Standard for Healthy Edible Oil issued by FAO, the ratio of linoleic acid to linolenic acid in essential fatty acids should be less than or equal to 4:1. Linoleic acid and linolenic acid are one kind of unsaturated fatty acids, which cannot be synthesized by human body. The proportion of rapeseed oil is reasonable.

Rich in nutrients: Rapeseed oil also contains major trace elements needed by human body, such as iron, copper and zinc, and the proportion of vitamin E in rapeseed oil is relatively appropriate.

Rapeseed oil is currently recognized as "the healthiest edible vegetable oil for the public".

What is unique about "low erucic acid vegetable oil"

"Low erucic acid rapeseed oil" refers to rapeseed oil with erucic acid content not exceeding 3%. It is made by squeezing low erucic acid rapeseed, and the erucic acid content is much lower than that of traditional rapeseed oil.

At present, the United Nations Food and Agriculture Organization (FAO) and WHO have put forward a limited standard for erucic acid in edible oil, requiring that the erucic acid content in edible oil should be less than 5%. The standard of erucic acid content in edible oil in some countries requires that it should not exceed 2% of total fatty acids.

In the chemical molecular composition of oleic acid and linolenic acid, the carbon chain is short, while erucic acid is a long-chain unsaturated fatty acid, which consists of 22 carbon chains. The long carbon chain is difficult to digest and has poor absorption and utilization rate, which will reduce the nutritional value of vegetable oil. And high doses of erucic acid can also induce myocardial fat accumulation, congestive heart failure and other diseases.

Now, the vegetable oil brands advertised as "low erucic acid rapeseed oil" in Shangchao and grain and oil stores are generally up to standard in erucic acid content, so you can buy them with confidence.

Tips for eating vegetable oil

No.1: which onesPeople are not fit to eat vegetable oil?

Rapeseed oil is suitable for all ages. Under normal circumstances, as long as there is no allergic reaction to the ingredients of rapeseed oil, most people are suitable for eating rapeseed oil.

However, in view of acute gastroenteritis, diarrhea and other diseases, it is suggested to control the dosage of vegetable oil. Although there is an old saying that "too much oil will not spoil vegetables", it is important to remember that too much oil will spoil people, so it is not advisable to drink too much cooking oil every day, just in moderation.

No.2: how to preserve the vegetable oil after opening?

It is recommended to keep it away from light and heat. Rapeseed oil after daily opening can be stored in a glass bottle for sealing, away from the stove, and placed in a dark cabinet, so as to avoid the emission of effective components in the rapeseed oil and not affect the fragrance and taste of the oil.

No.3: what is the best way to eat vegetable oil?

The content of unstable fatty acids in rapeseed oil is less, so it will not form too many trans fatty acids harmful to human body after heating, and high-temperature cooking can release the fragrance of rapeseed oil well and enrich the taste of vegetables.

Rapeseed oil is listed as the first choice for making Chili oil because of its strong fragrance, bright oil and high temperature resistance. Stir-frying rapeseed oil and pepper at high temperature can effectively blend their unique flavors and increase the overall flavor of Chili oil.

If it is high oleic rapeseed oil, its stability is better. Compared with other types of vegetable oil, it can withstand high temperature heating and repeated frying. Suitable for making fried food, such as fried dough sticks, French fries and other foods.

In addition, the fragrance of normal temperature rapeseed oil itself is not as rich as sesame oil, and if it is used to mix cold dishes without heating, it may not taste particularly good. Therefore, if the heated vegetable oil is used to mix cold dishes, the oil fragrance will be more obvious.

Food is the most important thing for the people.

Smelling the original vegetable oil fragrance,

Are you full of appetite at every meal?

What other tricks are there to eat vegetable oil?

Welcome to discuss with small farmers,

Be a little expert in using oil!

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The side lines of Mercedes-Benz EQE are smooth, with a body size of 4969mm*1906mm*1514mm and a wheelbase of 3120mm, providing a spacious interior space. Its front tread is 1639mm and rear tread is 1650mm, which further enhances the stability and handling of the vehicle. Equipped with 19-inch rims, the front and rear tyre size are both 235/50 R19, showing a dynamic and modern feeling.

The interior style of Mercedes EQE shows the perfect combination of luxury and technology. The steering wheel is made of leather, which supports electric up-and-down and forward-and-backward adjustment, providing drivers with a comfortable grip and flexible operation experience. The central control screen size is 12.8 inches, with smooth operation and rich functions. It supports voice recognition control system and can control multimedia system, navigation, telephone, air conditioner and skylight. The seat is made of imitation leather, and the main and auxiliary seats have many functions, such as front and rear adjustment, backrest adjustment, height adjustment (4-way), leg rest adjustment, lumbar support (4-way), and support heating and ventilation functions, bringing the ultimate comfort experience. In addition, the car is also equipped with electric seat memory functions in the driver’s seat and the co-pilot seat, making it easy and convenient to drive every time. The rear seats support proportional reclining, which provides more possibilities for luggage space. Multifunctional interfaces include Type-C, and the number of USB/Type-C interfaces is 3 in the front row/2 in the back row. At the same time, the front row is also equipped with wireless charging function to meet daily use requirements.

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车系eπ008的外观设计大胆而独特，前脸采用了极具未来感的设计，搭配大尺寸的进气格栅，增强了视觉冲击力。整体风格简洁而时尚，线条流畅，展现了现代科技感与运动感的完美结合。

eπ008以其5002*1972*1732mm的长宽高和3025mm的轴距，展现出宽大而优雅的车身线条，同时前轮距和后轮距均为1650mm，保证了车辆的稳定性。搭配265/45 R21规格的轮胎和独特的轮圈设计，进一步提升了整车的运动感和视觉效果。

eπ008的内饰设计以简洁时尚为主，采用了高品质的皮质方向盘，支持手动上下和前后调节，为驾驶者提供了舒适的操控体验。15.6英寸的中控屏幕集成了多媒体系统、导航、电话和空调的语音识别控制系统，大大提升了操作便利性和智能化程度。座椅采用仿皮材质，主座椅和副座椅均具备加热、通风功能，其中驾驶位座椅还配备了头枕扬声器，提升了驾驶体验的舒适度和娱乐性。此外，该车系还配备了电动座椅记忆功能，支持驾驶位、副驾驶位及后排座椅的记忆存储和快速调用。第二排座椅支持前后、靠背和腿托调节，可以适应不同的乘坐需求。后排座椅放倒功能提供了灵活的储物空间，满足多样化的使用场景。

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Although cars can improve the convenience of people’s travel, safety is still an unavoidable topic. Therefore, many car companies have begun to upgrade the safety of their models. Of course, for consumers, a car with very complete active and passive safety configurations will be more popular. Although it is not outstanding, it can also reach the mainstream level of the same level. Let’s take a look at it next.

First of all, from the appearance, the front face of the Maybach S-class adopts a very fierce design, which looks sporty. With the headlights, the overall design is very clean. The car is equipped with LED daytime running lights, automatic opening and closing, adaptive far and near light, automatic steering, delayed closing, etc. Come to the side, the body size of the car is 5470MM*1921MM*1510MM, the car adopts hard-line lines, the side gives a very delicate feeling, and with large-sized thick-walled tires, it looks sporty. On the rear design, the Maybach S-class rear line is flamboyant, the tail lights show a spiritual design style, and the exhaust pipe layout uses a barrel shape, which is generally relatively simple.

Inside the car, the Maybach S-Class interior is relatively rustic, in line with the positioning of the car. The steering wheel of the car is very consistent with the interior style, and it is made of genuine leather, which gives a good grip. Take a look at the central control, the car is equipped with a touch-sensitive LCD central control screen, which makes the interior style impressive, and the overall design of the central control is remarkable. The instrument panel and seats are also eye-catching, and the instrument panel design is remarkable, which looks very technological. The car adopts leather seats, equipped with functions such as auxiliary seats with memory electric adjustment and seat with memory electric adjustment, which makes it very comfortable to ride.

The Maybach S-Class is matched with an automatic manual (AT) gearbox, with a maximum power of 450KW and a maximum torque of 900N.m, resulting in good power performance.

The Maybach S-Class is equipped with vehicles to everything, driving mode selection, remote control keys, rear window sunshades, interior ambient lights and other configurations, which are worth praising.

To sum up, this car performs well in terms of space and configuration. As for the exterior design, everyone has their own aesthetic.

Driven by market transformation, the new energy vehicle industry is experiencing rapid growth.

Relying on the advantages of early layout and technological evolution, Chinese brands are at the forefront of the automotive industry. In addition to entry-level cars and family cars, Chinese brands are making rapid efforts in the high-end new energy field and gradually widening the gap with overseas brands.

In this market context, many Chinese brands have taken advantage of the wind and embarked on their own path of new energy transformation.

Among them, Hongqi also officially announced the strategy of "striving for transformation to new energy vehicles" before, and as a hero of FAW Group, Liu Yigong is also personally at the helm of the brand’s new energy transformation process. At present, the Hongqi brand has not only released the "flag" high-end electric intelligent super architecture FMEs, but also uses the "flag wonderful wings" as the logo to show the pioneering characteristics of the Hongqi new energy sub-brand.

On the evening of March 20, the first new car of Hongqi New Energy sub-brand was also the first model released after Liu Yigong took the helm of Hongqi, and the Hongqi EH7 medium and large pure electric sedan was officially launched.

And this new car priced in the range of 229,800 yuan – 309,800 yuan has a new goal, that is to redefine the high-end pure electric market. Of course, in the product dimension, Hongqi EH7 also brings a lot of freshness.

Design technology is comprehensively new, and the "new red flag" is emerging

Unlike the traditional Hongqi luxury sedan, the new Hongqi EH7 does not have a sedate and solemn design.

Based on the new "natural and smart aesthetics" design concept of the Hongqi new energy sub-brand, the Hongqi EH7, a medium and large pure electric car, will be aimed at household consumer groups and young groups in a more lively and fresh style.

Specifically, the Hongqi EH7 adopts the One Box integrated body shape, which has a smooth body posture and presents a more agile and smooth beauty. At the same time, with details such as the smiling front face, hidden door handle, and wing rear, it also presents a youthful look while constructing a delicate and advanced sense.

However, while the Hongqi EH7 further exhibits a youthful and dynamic design, the size of the vehicle remains significant.

Its length, width and height measurements can reach 4982 * 1914 * 1490mm respectively, and the wheelbase can also reach 3000mm. In terms of space, it rivals mainstream C-class cars such as Audi A6L and Mercedes-Benz E-Class.

It is worth mentioning that, in addition to the new design, the Hongqi EH7 continues to make great efforts in technology.

On the center console of the new car, we can see a display system composed of two sets of LCD screens. The new smart car system, in addition to providing a rich network configuration, also innovatively designed the detail of "smart fun corner" to bring richer playability to the smart car.

When it comes to the intelligent driving configuration of vehicles, the new car provides consumers with an L2-level intelligent driving assistance system, which is sufficient to meet consumers’ driving needs for safety and convenience.

Constructed driving performance, Hongqi EH7 goes mainstream

For traditional car companies and traditional luxury brands, the difficulty in building new energy vehicles lies in the "core advancement" of the vehicle. Looking at the same price models of BBA’s three traditional luxury brands, it is almost difficult to see high-quality Sandian performance, and it is also difficult to obtain excellent driving control experience.

Under the leadership of Liu Yigong and other "Hongqi people", FAW Hongqi has successively completed the design and manufacturing of pure electric exclusive vehicle manufacturing platforms and self-developed systems. And Hongqi EH7 is the intuitive embodiment of these technical achievements.

Based on the Hongqi self-developed battery system, the CLTC mileage of the Hongqi EH7 long-life version can reach up to 820Km, ranking among the top in the same level. At the same time, the Hongqi self-developed battery system can achieve multi-scene safety without heat diffusion through physical protection and three-power management system two-way optimization. High battery life, high safety and high reliability, such a pure electric vehicle travel experience can be said to be relatively well built, which also brings the first-mover advantage to the Hongqi EH7 in the same market.

In addition, based on insights into the high-end pure electric market, Hongqi EH7 also has the strength of high performance and high handling performance. Its four-wheel drive version, with the blessing of front and rear motors, has a 3.5-second breaking capacity. And in terms of chassis, Hongqi EH7 is equipped with a front virtual kingpin double wishbone + rear five-bar suspension structure, and professional configurations such as Brembo brake calipers and iDCS autonomous continuous damping adjustable shock absorbers, bringing a heavy chassis texture and silky and precise control experience.

From the perspective of the core qualities of Sandian and chassis, the new car Hongqi EH7 is based on the system strength of FAW Hongqi and works at the root to construct product advantages that are difficult to be replicated by new forces and ordinary brands. It is also relying on the solid and reliable core qualities that Hongqi EH7 is also expected to redefine the medium and large luxury pure electric car, thus gaining new development opportunities in the market.

Write at the end:

Entering the second half of the competition in the new energy era, FAW Hongqi is competing with quality, technology and system strength under the leadership of Liu Yigong.

Through the new car of Hongqi EH7, we can see that the competitive thinking of Hongqi, a luxury brand in the field of new energy, is to achieve quality optimization and improvement with "long-term", and to create products with "high-quality experience" and "safe, reliable and solid". And this steady development thinking is exactly what is needed in this slightly impulsive "new car era".