A little knowledge about food

1, we should cherish food, order food in moderation, avoid leftovers and reduce waste.

2, don't compare, be proud of saving, and be ashamed of wasting food. 3. Eat as much as you can, and don't leave leftovers.

When you see waste, stop it bravely and try your best to reduce it. 5. Be a propagandist of saving food and publicize the terrible consequences of wasting food to family, relatives and friends.

6, leftover rice porridge, leftover porridge pressed into noodles with noodles, leftover noodles fried to eat, leftover steamed bread fried steamed bread slices, leftover steamed bread slices made into mutton steamed bread slices. 7, can not be partial eclipse, can not be picky eaters.

8. When eating in a restaurant, ordering food will not be wasted. If there is any surplus, take it home. 9. Actively supervise friends and relatives around you to stop wasting food in time.

2. Provide some suggestions on food health.

Do you want to choose healthy food or what is healthy? China's dietary cereals "miscellaneous grains" are healthy, and the crops mentioned in the five cereals are wheat, millet, millet and hemp.

When it comes to a balanced diet, we can't help but mention the nutrition pyramid; Nutritionists divide foods into four categories, namely, fat and sugar, dairy products and meat, vegetables and fruits, and cereals. The bottom of the nutrition pyramid is mainly grain, but which agricultural products or foods should belong to grain?

Rice and wheat are still the main foods in China. In China, rice cultivation originated in the Shennong era in southern China about 4,700 years ago. The cultivation of wheat (barley and wheat) was introduced into North China in the late prehistoric period or before Pan Geng moved to Yin.

As for the millet, millet and grain in the grain, they all belong to "millet". "Millet" is one of the important cereals in the north, and it is rarely planted in the south. "Small" basically includes two kinds of plants: millet and millet.

Millet is not what we often eat today, but rice seeds and yellow rice. Corn is a crop introduced from the west only in modern times.

Peas are beans, and beans in grains are not all beans, but soybeans. Soybean was called glutinous rice in Zhou Dynasty, and it was only called bean since Qin and Han Dynasties.

Hemp in grain refers to hemp. The seeds of hemp are nontoxic, but the leaves are toxic, so it can be used as food.

3. Questions and answers about food saving knowledge of primary school students

Be proud of diligence and thrift, and be ashamed of arrogance and extravagance.

2, a grain of rice, a thousand drops of sweat, a grain of sweat.

3, a porridge and a meal are hard to come by, and a little perseverance is difficult.

4, drink water to think of the source, eat frugally. Every Chinese food on the plate is hard work.

What falls down is leftovers, and what flows away is sweat.

6, people eat for the sky.

7. The particles in the plate are hard!

8. Don't forget to be hungry when you are full!

9, cherish food, grab from the doll!

10, cherish food and start from me!

1 1, life is precious and food prices are higher!

12, food is earned by hard work!

13, the world belongs to us and food belongs to the world!

14, cherish the fruits of labor and oppose wasting food.

15 please remember: food is hard to come by!

16, wasting food is the biggest crime!

17, cherish food, everyone is responsible!

18, saving a grain is equivalent to saving a person's life!

19, cherish food is to cherish life!

4. Tips for saving food ~ ~

Calculate the consumption of household food, determine the purchase plan, and then purchase and record the variety, quantity and price of the purchased data. After one month, the consumption and surplus of all kinds of grain will be counted and the grain purchase plan for next month will be revised. Yesterday, Kunming's "Save Food by My Side-2008 Youth Scientific Investigation Experience Activity" was launched. The above-mentioned series of theme activities will help young people establish the awareness of saving food.

The youth scientific investigation experience activity is a national theme science popularization activity jointly sponsored by the Ministry of Education, the Central Civilization Office, the State Administration of Radio, Film and Television, the Central Committee of the Communist Youth League and the China Association for Science and Technology. Every year, related activities are organized for young people all over the country around a theme. Following "energy saving is at my side" and "water saving is at my side", this year, under the background of global concern about food problems, the theme of the event was determined as "saving food at my side".

The reporter learned that the activities include special lectures and inspection experiences. On the basis of teenagers' learning and understanding of the food problem in China, we will carry out corresponding scientific investigation and experience activities around saving food, and conduct experience investigation in families, groups and classes, such as small reporters, propagandists, theme class meetings and farm trips.

Teenagers will, with the cooperation of their parents, measure the consumption of family food and determine the purchase plan. Then go to shops and vegetable markets to buy in person as planned, and record the variety, quantity, price and other data purchased. After one month, the consumption and surplus of all kinds of grain will be counted and the grain purchase plan for next month will be revised. Family investigation experience can not only educate teenagers, but also inspire other family members to pay attention to saving food.

In addition, under the organization of the school, teenagers will design their own plans, calculate the weight of a grain of rice in groups of 3-5 people, and have personal feelings about saving every grain of rice. Plan grain saving investigation activities, and collect suggestions on preserving and saving grain through investigation. At the same time, go deep into communities, streets, parks, schools and other places to publicize and save food to the public. As an educator, Li Bisong, president of Tiesan Middle School, said that such activities may not produce immediate results and change daily habits in the short term. However, through students' personal experience, investigation and publicity, it is helpful for students to establish the consciousness of saving food and gradually develop the habit of saving food in their daily life.

5. Food safety knowledge

Food safety knowledge:

1, don't believe that cookies are healthy.

Wei Liping, director of the Nutrition Department of the Hospital of Integrated Traditional Chinese and Western Medicine of Southern Medical University, said that biscuits contain refined grains, fat, salt, sugar and other substances, and long-term consumption can easily lead to excess energy. In the process of high temperature processing, the B vitamins contained in food raw materials will be destroyed. Relatively speaking, graham crackers is relatively healthy, but few people in the market can really achieve less oil, less salt and less sodium.

2. "High fiber" may be fake.

Dr. robert davies, an American food expert, pointed out that chicory root or maltodextrin can give people the illusion of "high cellulose". Compared with pure natural dietary fiber in grains and vegetables, this so-called "high fiber" food can not only bring health, but also cause gastrointestinal problems such as bloating and belching. =

3. Extra virgin olive oil may be a gimmick.

Olive oil is considered as a healthy oil. Its advantage lies in its high monounsaturated fatty acid content, accounting for 86% of total fat, which is helpful to reduce blood lipid and prevent vascular diseases.

Because the total energy intake of modern people exceeds the standard, if we hope to achieve the purpose of reducing fat and preventing diseases by replacing edible oil, it may have little effect. Not only that, the current olive oil market is also chaotic.

Professor Dan Flynn of the Olive Oil Center of the University of California, USA, found that about 70% of the olive oil on the market does not meet the standard of extra virgin olive oil (the acidity does not exceed 1%). Therefore, from the perspective of cost performance, it is best to choose domestic soybean oil and sunflower seed oil, and pay attention to controlling the usual oil consumption.

3. "Pure nature" is misleading.

If the label of cooked meat products says "pure natural" or "preservative-free (sodium nitrite)", you may feel very relieved.

Dr Joseph Seabra Neck, a professor of meat science at Iowa State University, warned that this may also be misleading. For example, meat products labeled "celery powder and active bacteria culture" can naturally synthesize sodium nitrite, which has a certain antiseptic effect and is not recommended for long-term consumption in large quantities.

4. Organic food is not necessarily equal to health.

"Organic" does not necessarily mean "healthy". Professor Shashi Bruce, a food safety expert at the University of Illinois at Urbana-Champaign, explained that the use of pesticides, fertilizers and herbicides. It is absolutely forbidden in organic food, and it also has high requirements for soil, air and water environment. Moreover, it is difficult to detect whether it meets the organic standards by current scientific means, and we can only rely on the trust of producers and regulatory authorities.

Experts pointed out that, on the contrary, in China, the certification and supervision procedures of "green food" are complete, the regular sampling system is perfect, and the quality is relatively reliable.

5. Use pseudonyms to "reduce" the sugar content.

Walter willett, director of the Department of Nutrition at Harvard School of Public Health, warned that in many processed foods, companies would use "aliases" such as distilled sugarcane juice, agave nectar, concentrated juice and corn syrup instead of "sugar", which would create the illusion that the products contain no or less sugar. The US Food and Drug Administration (FDA) has now required manufacturers to list all sugar additives on the ingredient list.

People's Daily News Food safety experts reveal 10 food hidden rules

6. Stories or ballads about saving food

As we all know, people are saving food now, but some people still don't. I hope this essay can help them save food! The sun is scorching, and the sun is baking the earth.

Xiao Ming is sitting on the soft sofa watching cartoons leisurely, eating sweet and delicious snacks and enjoying the cool air of the air conditioner. "Eat, eat, son, come and eat, call your father."

Xiao Ming reluctantly put down the remote control, called his father and sat at the table for dinner. Xiao Ming just glanced at the dining table and frowned. "Oh, these dishes are coming again, I have no appetite!" "Xiao Ming involuntarily looked up and watched TV.

He is really absent-minded! It's almost half an hour, and Xiao Ming is still pouting and eating his meal. He doesn't want to eat any more. He picked up the bowl and tried to pour the remaining rice out of the door. Mom and dad came to stop him. "Xiao Ming, you are such a waste!" Dad said sternly.

"No, I'm going to eat potato chips!" At this time, the mother on the side said earnestly, "Xiaoming, at your door, the farmer's uncle is planting rice in the hot summer." After the transplant, you still need to work hard.

They are busy from morning till night, whether it is cold or hot, windy or rainy, for everyone and for themselves. Xiao Ming understood it quickly and said solemnly, "I remember the teacher taught us a poem-weeding. Today I really understood the meaning of this poem."

"Yes, the farmer's uncle got our food with sweat and hard work. We must cherish it! " Xiao Ming ran shyly to the table and ate with relish before his mother finished. Mom and dad laughed when they saw him, and praised Xiaoming for really growing up! Since then, Xiaoming has never lost a grain of rice, and he has become everyone's supervisor! Save food with me! I am a grain of rice, from the field, sowing in June and harvesting in October. It is not easy for me to grow up. Please cherish every grain of rice. Students, remember, it is important to cherish food, but every grain is hard.

Cherish every meal of rice and form good habits from childhood! Tips for saving food Measure the household food consumption, determine the purchase plan, and then purchase and record the data such as the variety, quantity and price. After one month, the consumption and surplus of all kinds of grain will be counted and the grain purchase plan for next month will be revised.

Yesterday, Kunming's "Save Food by My Side-2008 Youth Scientific Investigation Experience Activity" was launched. The above-mentioned series of theme activities will help young people establish the awareness of saving food. The youth scientific investigation experience activity is a national theme science popularization activity jointly sponsored by the Ministry of Education, the Central Civilization Office, the State Administration of Radio, Film and Television, the Central Committee of the Communist Youth League and the China Association for Science and Technology. Every year, related activities are organized for young people all over the country around a theme.

Following "energy saving is at my side" and "water saving is at my side", this year, under the background of global concern about food problems, the theme of the event was determined as "saving food at my side". The reporter learned that the activities include special lectures and inspection experiences.

On the basis of teenagers' learning and understanding of the food problem in China, we will carry out corresponding scientific investigation and experience activities around saving food, and conduct experience investigation in families, groups and classes, such as small reporters, propagandists, theme class meetings and farm trips. Teenagers will, with the cooperation of their parents, measure the consumption of family food and determine the purchase plan.

Then go to shops and vegetable markets to buy in person as planned, and record the variety, quantity, price and other data purchased. After one month, the consumption and surplus of all kinds of grain will be counted and the grain purchase plan for next month will be revised.

Family investigation experience can not only educate teenagers, but also inspire other family members to pay attention to saving food. In addition, under the organization of the school, teenagers will design their own plans, calculate the weight of a grain of rice in groups of 3-5 people, and have personal feelings about saving every grain of rice.

Plan grain saving investigation activities, and collect suggestions on preserving and saving grain through investigation. At the same time, go deep into communities, streets, parks, schools and other places to publicize and save food to the public.

As an educator, Li Bisong, president of Tiesan Middle School, said that such activities may not produce immediate results and change daily habits in the short term. However, through students' personal experience, investigation and publicity, it is helpful for students to establish the consciousness of saving food and gradually develop the habit of saving food in their daily life.

I can't help it. I tried my best, that's all.

7. What do you know about food?

Most grains are grains, so there are five grains, eight grains and a hundred grains.

International concept of grain varieties. The detailed food catalogue listed by the Food and Agriculture Organization of the United Nations in 1995 includes eight categories 106: 1 and eight cereals; 2. Five root and tuber crops; 3. Five kinds of beans; 4. 13 kinds of oil crops, oil fruits and oil kernel crops; 5. 20 kinds of vegetables and melons; 6. Three kinds of sugar crops; 7 24 kinds of fruits and berries; 8. There are 28 kinds of livestock and poultry and livestock products.

The concept of grain varieties is constantly developing and changing. With the continuous improvement of people's exploitation and utilization of nature, it will be endowed with updated connotation and extension. This is also a reflection of people's deepening understanding of the objective world and improving their ability to transform the world.

In China, by 1950, grain varieties refer to seven categories: wheat, rice, soybean, millet, corn, sorghum and miscellaneous grains. From 65438 to 0952, grains were reduced to four main varieties: wheat, rice, soybeans and potatoes.

During the period of 1957, the grain increased to five varieties: wheat, rice, soybean, miscellaneous grains and potato. 197 1, miscellaneous grains were changed to "corn", etc., and grains were divided into five new categories: wheat, rice, soybeans, corn and potatoes.

After 1979, the definition of grain in Ci Hai is a general term for all kinds of major grains, such as wheat, sorghum, corn and potatoes. From 65438 to 0996, according to planting area and yield, it is arranged as follows: rice, wheat, corn, potato, soybean, millet, sorghum and other miscellaneous grains.

From 65438 to 0990, the grain categories ordered by the state were: wheat, rice, corn and soybean. In the category of grain commodities, grain can be divided into four categories according to its fields and functional objects: 1, raw grain 2, finished grain 3, mixed grain and trade grain 4.