Introduction

As you know, vitamins are life. Without them, the human body cannot function, because they provide the activity of the nervous, circulatory, digestive, reproductive systems, brain and skeleton.

Of course, vitamins are needed by everyone, sick and healthy of any age, at any time of the year. But there are groups of people and situations where the issue of vitamins should be given special attention. First of all, these are children. Ascorbic acid is useful for children, it plays an important role in metabolism, increases immunity, body resistance, which is especially important during the school year.

Vegetables, fruits and fruit juices are one of the sources of ascorbic acid. In packaged juices of industrial production, the activity of vitamins is somewhat reduced, so manufacturers add vitamins. To improve the taste, color, preservation of juices, add citric or ascorbic acid. I have the following questions:

How much vitamin C is in packaged juices?

What juice for children is more useful in terms of vitamin C content?

Objective of the project: determine the most useful packaged juice for the health of a schoolchild by the content of ascorbic acid in it.

Tasks:

Understand the role of vitamin C in child's body.

Get acquainted with the chemical nature and methods for the determination of ascorbic acid.

Investigate the content of ascorbic acid in packaged juices.

Object of study: packaged fruit juices.

Subject of study: the content of vitamin C in packaged fruit juices.

Hypothesis: we assume that all packaged fruit juices contain enough vitamin C to meet the daily requirement of a child's body.

Chapter 1. Theoretical justification Problems.

1. The chemical nature of vitamin C.

The chemical nature of ascorbic acid was elucidated after its isolation in crystalline form from a number of animal and plant products, the works of A. Sent-Gyorgyi and Haeworth were especially important in a number of these studies.

The structure of vitamin C was finally established by its synthesis from L-acid. Vitamin C is called L-ascorbic acid.

L-ascorbic acid is a crystalline compound readily soluble in water to form acidic solutions. The most remarkable feature of this compound is its ability to reverse oxidation (dehydrogenation) to form dehydroascorbic acid.

Ascorbic acid, especially its dehydro form, is a highly unstable compound. Vitamin C is destroyed most rapidly in the presence of oxidants in neutral or alkaline environment when heated. Therefore, at different types Some of the vitamin C is usually lost during cooking, and ascorbic acid is usually destroyed in the manufacture of canned vegetables and fruit. Vitamin C is destroyed especially quickly in the presence of traces of salts, heavy metals (iron, copper).

Among the conditions affecting the rate of oxidation of ascorbic acid, in addition to catalysts, the reaction of the medium plays a very important role: vitamin C is relatively more stable in an acidic reaction of the medium, unstable in a neutral one, and decomposes extremely quickly in an alkaline one.

1.2 The value of vitamin C for the child's body.

Ascorbic acid is essential for the mental and physical development of a child. They help to increase the level of intelligence, improve assimilation and help to remember educational material, help concentrate attention, and increase the body's resistance to infections.

Ascorbic acid is not synthesized in the human body and must be supplied with food in the required quantities.

Ascorbic acid from food is almost completely absorbed into small intestine... Excess vitamin C is excreted in the urine within a few hours.

Functions of vitamin C human body very versatile. It plays a certain role in the activity of all cells, is involved in the activity of enzymes and thus participates in the metabolism. It promotes the sealing of capillaries and thereby strengthens the body's defenses against infections.

Vitamin C affects the intercellular substance, maintains elasticity connective tissue and vital functions of bone, cartilage and tooth tissue. It stimulates growth, participates in redox processes, tissue respiration, amino acid metabolism, improves the use of carbohydrates and normalizes cholesterol metabolism.

Vitamin C is necessary for the formation of collagen protein, which holds the cells of blood vessels, bone tissue, and skin, which is necessary for wound healing. Vitamin C acts on the function of the central nervous system, stimulates the activity of the endocrine glands, especially the adrenal glands, improves liver function. It promotes the absorption of iron and normal blood formation, affects the exchange of many vitamins. Vitamin C increases the body's resistance to infections, chemical intoxication, overheating, cooling, oxygen starvation.

With a lack of vitamin C, a person experiences drowsiness, lethargy, bleeding gums, and a tendency to frequent colds.

An overdose of vitamin C is extremely rare, since this vitamin is easily excreted from the body. Most often, this overdose leads to an upset stomach, but it goes away rather quickly.

1. Daily requirement for vitamin C

The daily requirement for vitamin C, depending on the intensity of work, is 70-105 mg for men and 55-95 mg for women. Children 6 months - 1 year old should receive 20 mg of vitamin C per day, 1-2 years old - 35-40 mg, 3-10 years old - 45-50 mg, 11-13 years old - 60 mg, 14-17 years old - 80 mg for boys and 70 mg for girls.

The need for increased mental work and great neuropsychic stress increases up to 120-200 mg during sports competitions.

The need for vitamin C significantly increases in many diseases (infections, rheumatism, operations, extensive burns, illnesses gastrointestinal tract and etc.). The need for vitamin C depends on the quality and quantity of dietary proteins. So with a deficiency in the diet of essential amino acids, 50-70% more vitamin C is required.

1.4 Methods for determining the content of ascorbic acid in pasteurized industrial juices.

1.41 Photometric method .

This method is based on the conversion of the analyte into a light-absorbing compound. Moreover, this substance is determined by measuring the light absorption of the solution of the obtained compound.

By the color of solutions of colored substances, it is possible to determine the concentration of one or another component either visually, or using photocells of devices that convert light energy into electrical energy.

1.42. Iodometry method.

The titrimetric method of analysis is based on the oxidation of the test substance with iodine. Includes direct and back titration method.

The direct method is based on the direct reaction of the analyte with the working substance. And during back titration, an excess of the working substance is added to the component to be determined.

Chapter 2. Practical substantiation of the problem.

1. Collection of information on the composition of fruit juices.

Starting to work on the topic of the project, I decided to collect information about the composition of juices, which the manufacturer places on the packaging, and most importantly, is there any information about the vitamins contained in these juices.

Analyzing the information on the juice packaging, I found that most manufacturers indicate the general composition, but do not write anything about the vitamins contained in juices and fruit drinks.

Why don't manufacturers inform buyers about the vitamin C content? The fact is that vitamin C is an integral part of industrial juices, it is a good preservative that prevents oxidation of the product, and can cause its excessive amount in the product produced by unscrupulous manufacturers.

1. Determination of the content of ascorbic acid in fruit juices.

For research, I took packaged juices of the J7 brand apple, J7 cherry, Fruit brand peach and Krasavchik apple-cherry juice.

Iodine easily oxidizes ascorbic acid, while the iodine solution quickly discolors. This reaction can be used to determine ascorbic acid in fruit juices by titration.

I used starch as an indicator. When an excess amount of iodine is added to the titrated solution containing starch, the solution turns blue.

When ascorbic acid is directly titrated with an iodine solution, the following redox reaction occurs:

WITH 6 N 8 O 6 + I 2 → C 6 N 6 O 6 + 2HJ

Thus, 1 mol of ascorbic acid (176.12 grams) reacts with 1 mol of iodine (253.8 grams), thus forming 1 mol of dehydroascorbic acid and 2 mol of iodide ions. This conclusion will be required for further calculations.

Preparation of titration solution:

To conduct the analysis, I used a pharmacy 5% iodine strength. The volume of the tincture required for the preparation of 1 liter of 0.005 M iodine solution J 2 is expressed by the formula:

V (tinctures) = 100 m J2 / (W tinctures · P tinctures)

Where m J2 is the mass of iodine required to prepare the solution (1.269 grams)

W tincture - the concentration of iodine in the tincture,% of the mass.

P tincture - density of iodine tincture, g / ml

It is easy to see that there are two unknown quantities in our formula: the exact concentration of iodine in the pharmacy tincture and its density.

The density of the tincture can be determined, but the concentration of iodine is more complicated. There is no guarantee that the iodine concentration is exactly 5%, since it does not have of great importance, how much iodine is actually contained in the tincture: 4.5% or 6%.

For educational purposes, it can be assumed that the concentration of iodine is exactly 5%, and the density of the tincture is -1 g / ml. Then for the preparation of 1 liter of 0.005 Mortar J 2 it is necessary:

V tinctures = 100 1.269 / (5 1) = 25.4 ml

Accordingly, to prepare 100 ml of iodine solution, you need:

0.1 25.4 = 2.54 ml of tincture.

If there is no volumetric flask at hand, the original iodine tincture can be diluted 40 times. The concentration of the resulting solution approximately corresponds to 0.005 M. Of course, the results of such an analysis will be approximate, but the main thing is to use the same solution for titration, then the results of different determinations can be compared with each other.

For this analysis, it is not necessary to use distilled water - boiled water is also suitable.

The concentration of vitamin C in juice samples was calculated using the formula:

WITH vitS = C J2 V J2 / V juice = 0.005 V J2 / V juice,

Where C vitS is the concentration of vitamin C,

V J2 - the volume of iodine solution, which went for titration,

C J2 - concentration of iodine solution,

V juice - the volume of the juice sample.

Based on the results of three parallel determinations of the concentration of vitamin C in juice, we calculated the average value:

WITH VitSaverage = (C vitC1 + C vitC2 + C vitC3 ) / 3

Where C vitC1, C vitC2, C vitC3 - data of the 1st, 2nd and 3rd parallel analyzes, respectively,

C vitS Average - the average value of the concentration of vitamin C

m vitS = C VitSaverage 0.1 M C6H8O6 1000 = 17612 C VitSaverage

where М С6H8O6 molar mass vitamin C,

m vitC - weight of vitamin C, mg / 100 ml of juice.

Preparation of starch solution : I added a little water to 1 gram of starch, mixed until a suspension was formed, which was slowly poured into 200 ml of boiling water (with vigorous stirring).

Titration: the burette was filled with iodine solution to the zero mark. A 10 ml sample of juice was added to a conical flask for titration using a pipette, diluted with water to a volume of 100 ml, and then 0.5 ml of starch solution.

Titrated with iodine solution with vigorous stirring until a blue color appeared, which did not disappear within 20 seconds.

For each juice sample, a series of three titrations was carried out.

apple in "J7" brand juice.

Ascorbic acid titration results

vso brand "J7" cherry.

Ascorbic acid titration results

in juice of the Frutik brand peach.

Ascorbic acid titration results

in juice of the Krasavchik brand apple - cherry.

During the experiment, I found out that all the studied packaged juices contain ascorbic acid, but in different quantities.

brands J7 cherry, J7 apple, "Fruit" peach,

"Handsome" apple - cherry.

(mg / 100ml)

According to the diagram, it can be seen that the most rich in vitamin C is the packaged juice of the "J7" brand cherry. Therefore, of all the studied samples, this juice is the most useful for children and it can be recommended to students of our school.

Conclusion

Working on the theme of the project, I found out that ascorbic acid is useful for children, it plays an important role in metabolism, increases immunity, body resistance, which is especially important during the school year.

One of the sources of ascorbic acid is fruit juices, which are loved by all children, without exception.

Manufacturers of juices and fruit drinks do not include information on the vitamin C content on their packaging.

Using the iodometry method, I determined the ascorbic acid content in fruit juices of the J7 brand cherry, J7 apple, the Fruit brand peach and the Krasavchik brand apple - cherry. Of all the samples under study, the most rich in vitamin C is the packaged juice of the "J7" brand cherry, therefore it is the most useful for children and can be recommended to the students of our school.

I assumed that all packaged fruit juices contain

a sufficient amount of vitamin C to meet the daily needs of the child's body. Experimental data did not support our hypothesis. All tested juice samples contain insufficient amounts of vitamin C.

Based on the above, I plan to continue working on the project, namely:

Determine the content of vitamin C in fresh juices.

Determine the content of vitamin C in the broth of wild rose and dried apricots.

Bibliography.

1. Getman S. Artificial and natural vitamins // Research work. - 2008. [Electronic resource] - Access mode. - URL: http://stgetman.narod.ru/vitamin01.html

2. Sozina E. Determination of the content of vitamin C in vegetables and fruits // Research work. - 2011. [Electronic resource] - Access mode. - URL: http://do.gendocs.ru/docs/index-211100.html#5522408

3. Photometric method // GOST 2455689. By-products of vegetable fruits. Methods for determining vitamin S. M .: Standards Publishing House, 2003. - P. 6-7.

4. Internet resources.

Looking at the beautiful boxes, bottles with juice on the shop windows, we ask ourselves the question: “What kind of juice should I buy? Which juice is better? " Natural juices should occupy a worthy place in the human diet, especially since now there are juices in stores for every taste. In the spring, the human body is deficient in vitamins. To fight at least somehow with vitamin deficiency an invariable companion of spring, you can replace ordinary tea and soda with natural juice. Juice is a liquid product obtained by mechanical processes from fruits or vegetables, preserved in a physical or chemical way.

Everyone knows about the benefits of fruit and vegetable juices, natural and especially freshly squeezed. They are as healthy and nutritious as the fruits themselves. Fruit and berry juices are very rich in carbohydrates, organic acids, sugars (fructose, glucose), various vitamins (C, B, P, PP, etc.), coloring and aromatic substances, mineral salts. They taste good, quench thirst well and promote better absorption of food.

The absorption of vitamins is interfered with:

1. Alcohol - destroys vitamins A, B, calcium, zinc, potassium, magnesium.
2. Nicotine - destroys vitamins A, C, E, selenium.
3. Caffeine - kills vitamins B, PP, reduces the content of iron, potassium, zinc.
4. Aspirin - reduces the content of vitamins B, C, A, calcium, potassium.
5. Antibiotics - destroy vitamin B, iron, calcium, magnesium.
6. Sleeping pills- hinder the absorption of vitamins A, D, E, B12, greatly reduce the level of calcium.

High quality juice is obtained from fresh, ripe and healthy fruits and vegetables. But you can use deformed, dented, very small fruits and vegetables. However, in no case should you take raw materials affected by pests and diseases: juices are obtained with an unpleasant aftertaste and off-odor.

Juices are cloudy and transparent. The former contain not only juice, but also the pulp of fruits and vegetables with a whole range of useful insoluble substances - fiber, pectin, fat-soluble vitamins (A, E). As a rule, the content of natural juice in them is 45%, the quality is 100%. Juices without pulp are clarified and unclarified. The former are clarified with a filter. The latter are more nutritious, although they are unsightly appearance- cloudy, with sediment.

When fighting avitominosis, it is better to drink multivitamin juices, since the set of vitamins in them is somewhat expanded due to the fact that multivitamin juice is a mixture of juices of different berries and fruits (up to 10 components). But as doctors say, in the spring we do not have enough vitamins. What are vitamins and why are they so necessary for our body? Vitamins (vita - life) are biologically active substances synthesized in the body or supplied with food, which in small quantities are necessary for the normal metabolism and vital activity of the body. Natural juices should occupy a worthy place in the human diet, especially since now there are juices in stores for every taste.

Table 1

The value of vitamins

The main source of vitamins is juice, especially since it is available to everyone and can be stored for a long time.

We had a desire to determine which juice of famous brands contains more vitamin C. Why did we look for vitamin C in juice? It is the best known and most studied vitamin. It was discovered as an anti-scaling agent and has since been widely used in medicine and the food industry. It is recommended to take 75 mg daily. People who systematically take vitamin C are less likely to get colds, they have strong vascular walls, firm, elastic skin, the iron contained in foods is better absorbed. In addition, ascorbic acid is very important for smokers, as it neutralizes free radicals in tobacco smoke. People under stress also need vitamin C, as it is involved in the formation of the adrenal hormone acetylcholine, which soothes the body. It is better to fill vegetable dishes, cereals, bread with juice, in particular orange juice, as it is rich in vitamin C, which promotes better absorption of iron and proteins.

Research methodology

We took four types of orange juice of various brands, the most famous of which are: “Yes”, “My family”, “Favorite garden”, “Dobry” and decided to define:

• the presence of vitamin C in juices, its% content;
• taste, color of juices;
• the popularity of juices;
• the frequency of purchases by seasons (spring, autumn).
• the role of advertising for natural juices.

The lack of vitamin C can be detected with iodine. Vitamin C is an intense reducing agent, and therefore it will reduce the colorless iodine cation. Therefore, the addition of substances containing vitamin C will lead to the obligatory discoloration of iodine. If discoloration does not occur, we can say that there is no vitamin C in the sample. If iodine is discolored, then vitamin C is present in the sample. Vitamin C is very unstable, it is destroyed in air, when heated, in contact with metal objects.

Experiment

1. Dilute the alcoholic solution of iodine with water until the color of strong tea.
2. Add starch paste to the solution until a blue color is obtained.
3. Let's take 1 ml of orange juice of the studied brands into porcelain dishes and add paste to the samples drop by drop, counting the number of drops.
4. We observe the color. If the iodine solution discolored quickly, then there is a lot of vitamin C in the sample, if it discolored slowly, there is little vitamin C. If not completely discolored, then vitamin C is absent.
5. Let us carry out the same experiment by heating the juice samples.
6. Let's make a conclusion.

Research results

We found that all of the orange juice samples we tested contained vitamin C, but in different amounts. Since the fewer drops of iodine are added to the sample, the more vitamin C.

• apple juice - women 44%, men 39%;
• orange juice - women 42%, men 36%;
• women prefer sweet taste;
• men prefer a sour taste.

For example, in Germany the most popular apple juice, in Western Europe(Italy, Spain) - grape, in China - apple, in the USA - grapefruit, in Brazil, Russia - orange, in India - mango. The frequency of purchases varies by season, as can be seen in the diagram ( Appendix 5).

The diagram shows that on average 18% of the respondents consume natural juices every day. By seasons: autumn - 17%, spring - 20%. Once a week: an average of 28 respondents. According to the seasons, the figure fluctuates: autumn - 25%, spring - 32%. Once a month on average 23% of respondents. Conclusion: the population of the village. Sanyyakhtah does not use natural juices systematically, mainly once or twice a week, which is not enough for the body. At the same time (according to the respondents) many of the villagers buy cheap juices, not looking at their quality, the naturalness of the product is practically not taken into account ( Appendix 6).

Juices should be sold in small, single-use packaging. Unfortunately, the composition of the product is not written on all juices. It is better if there is complete information on the products. The buyer will be able to navigate the product that is offered to him and use the product with greater benefit for himself.

Advertising plays an important role in increasing the popularity of certain brands of juice. From the commercials you can find out that all natural juices are a “pantry of vitamins”.

Whether this is true or not, we tried to find out after conducting the above experience and examining the manufacturers' labels on the packages. ( Picture 1)

Output:

What is the best juice? Investigating famous brands of juices, we came to a conclusion and made a rating of the best juices (Figure 2).

Bibliography

1. Antsiferova S.N., “All about juices”, Moscow, publishing house “Epos”, 1984.
2. Kleger K., "Vitamins - sources of health", Moscow, publishing house "Kron - Press", 1997.
3. Shinger A.S. " Healthy eating”, Moscow, IIP, 2003.
4. Kropolskiy E. V. “Natural juices: + and -“, Novosibirsk, 2001.

Each of us knows that vitamins play a vital role for the human body, are a preventive measure various diseases, and their lack in food causes a serious pathology with pronounced manifestations - vitamin deficiency.

The lack of nutrients for health after the autumn-winter and spring periods is compensated by the use of fruit, vegetable and berry juices. This liquid food product, popular all over the world, containing a large amount of trace elements and vitamins, keeps the human body in good shape and promotes excellent health.

Types of juices

There are several types of juices: freshly squeezed, reconstituted and directly squeezed juice.

Juices obtained from benign ripe fruits (grape, apricot and plum, orange, apple and pomegranate), berries (black currant and gooseberry juice) and vegetables (tomato, carrot and cabbage, beetroot and pumpkin) are widespread. There are also juices squeezed from the stems, leaves and roots, used for food herbs (juice from the stalks of sugar cane and celery), as well as some trees (maple and birch sap).

Vitamins in various juices

Fresh juice is an excellent source of enzymes, minerals and vitamins and serves in a convenient way obtaining the required daily intake of vitamins for people of all ages.

Natural juices contain natural compounds (phytonutrients) found in vegetables, fruits and plants that help to cope with diseases and have preventive properties. Entering the body in liquid form, the juice allows it to absorb and use the necessary vitamins faster and easier.

If you know what vitamins are in the juice, then you can get the maximum benefit from it. Thanks to their nutritional excellence, fresh juices are able to compensate for vitamin deficiencies associated with disease and nutrition.

Cabbage juice contains vitamin C, anti-ulcer vitamin U, amino acids, iron, calcium and easily digestible carbohydrates.

Pumpkin juice contains B vitamins, beta-carotene, vitamins E, C, T, iron, sucrose, calcium and potassium.

Carrot juice is rich in phosphorus, B vitamins, and vitamins C, E, A, K, D, beta-carotene, calcium and potassium, iron.

Beetroot juice is a source of B vitamins, vitamin C, iron, potassium, iodine, betaine and magnesium.

Tomato juice contains fructose, vitamins A and C, glucose, beta-carotene, magnesium, calcium and iron.

All vegetable juices (green, orange and yellow) contain vitamin A.

Orange, grapefruit juices and currant juice (black) are a real treasure of vitamin C.

Pear juice contains sugar, organic acids, pectins, vitamins B and C, fiber.

Grape juice is very rich in manganese, B vitamins and vitamins P and C, magnesium, calcium, potassium and cobalt.

Apple juice has high content B vitamins, potassium, sugar, carotene, vitamins E, C, P, pectins, manganese, organic acids, iron.

Plum juice contains carotene, vitamins PP, B, C, pectins and organic acids.

Care should be taken when using juices and do not overestimate their healing power. The vitamins in the juice help support the body, but they do not provide an opportunity to completely cope with the disease.

The use of freshly squeezed juices has contraindications for certain diseases. For example, with gastritis, peptic ulcer and pancreatitis, it is not recommended to drink orange, lemon, currant, apple and cranberry juices (sour).

Even a child knows that fresh juices are beneficial to the body, but did you know that the color of the drink is directly related to your health and mood. Fresh juices of red color, such as pomegranate juice, the benefits of which are widely known not only in folk, but also traditional medicine able to give vitality and endurance.

Orange or yellow juice (orange or lemon) has an invigorating effect, light, transparent color has a soothing effect on nervous system, green, blue - gives vitality, helps to get rid of extra pounds.

Pumpkin

During pregnancy, it is recommended to use pumpkin juice - the benefits of which for expectant mothers are rich in mineral composition: there is iron, calcium, magnesium, potassium, but such fresh juice also has a harmful effect on the body - it is not recommended to use it for gastritis, diabetes mellitus, diarrhea, allergic manifestations ... In all other cases, it is an excellent soothing, antipyretic, cleanser. Pumpkin juice, the benefits and harms of which have been known for a long time, contains almost all vitamins of group B, C, E, PP, beta-carotene, pectin, fiber.

Tomato

The benefits of tomato juice in the content of serotonin, it improves mood, relieves postpartum depression, perfectly satisfies hunger, is often used in dietary nutrition contains vitamins E, H, A, B, PP and C. Tomato juice, the benefits and harms of which have been discussed by nutritionists more than once, is an excellent anti-inflammatory, antibacterial choleretic and diuretic. The benefits of tomato juice lie in the fact that it contains minerals such as manganese, calcium, iron, magnesium, zinc, sulfur, iodine, and that's not all. The nice thing is that by consuming the drink in moderation, you will not harm your body in any way. Tomato juice is sometimes used as remedy in the prevention of thrombosis. This wonderful drink complements celery root, parsley and burdock leaves well. This combination makes the drink popular. drug for the treatment of the liver.

Cabbage

The benefits of cabbage juice are known to everyone due to its invaluable composition, it is popular in many diets. It contains minerals such as potassium, silicon, chlorine, phosphorus, iodine, nitrogen, iron and a host of other useful minerals. This fresh juice stabilizes blood pressure, fights diseases of the cardiovascular system, and lowers "bad" cholesterol. The main vitamins in juices are C, B, PP, K, D. Cabbage juice, its benefits and harms are gas formation, intestinal distention, which disappears after a couple of days from the start of the drink.

Beetroot

The benefits of beet juice have been repeatedly noted by women, but do not abuse it, otherwise you risk harming yourself. Fresh beetroot helps to improve the functioning of the brain and heart, has a beneficial effect on blood vessels, reduces pressure, gives vitality, normalizes digestion, and has a beneficial effect on the body as a whole in case of liver diseases. Here vitamins - C, B2, P, E, PP, there is magnesium, phosphorus, calcium, potassium, sodium, sulfur, iron and much more.

In addition, beet juice is useful for oncology, it is recommended to use it at least 5 times a day, which makes it possible to better tolerate chemotherapy and prevent the progression of the disease in oncology. In terms of its benefits, in this sense, it is not inferior even to the well-known green vegetable juice made from burdock leaves, celery, parsley and zucchini.

Fresh for men

Pomegranate

Pomegranate juice is good for you prophylactic agent with prostate cancer. This drink increases hemoglobin, strengthens immune system, removes toxins, has a beneficial effect on the gastrointestinal tract, liver function, cardiovascular system, causes sexual desire. It has a rich vitamin composition - groups B, C, PP, A, E, as well as minerals and amino acids of which there are a total of more than 20 in the juice. It should be used with caution by people with peptic ulcer disease, gastritis, heartburn, exacerbated pancreatitis, cholecystitis.

Carrot

Juice is loved by many. For men, the benefits of carrot juice are due to the presence of daucosterol, which is responsible for pleasure, and, accordingly, the potency of the stronger sex, but know when to stop, it can also harm. It contains vitamins - A, B, C, D, E, K, minerals - zinc, selenium, calcium, phosphorus, iron and others. If you have gastritis, colitis, peptic ulcer, diabetes limit your drink intake. Carrot juice, the benefits and harms of which were studied in ancient times, due to the high content of vitamin A, has a beneficial effect on the hematopoietic organ, the benefits of juice for the liver are due to the purification and maintenance of a healthy state.

Celery

Celery juice - useful as an aphrodisiac. Celery juice increases desire, potency, strengthens, cleanses the body, but it is not so harmless. Hypertension, pancreatitis, colitis, varicose veins, liver and kidney disease - all of these are contraindications. Vitamin composition - A, B, E, PP, C, K, it contains minerals such as potassium, copper, selenium, magnesium, cobalt, sulfur and that's not all. In terms of its vitamin composition, it is close to the juices of parsley and burdock, however, in terms of taste, it wins significantly.

Fresh in cosmetology

Citric

Cosmetologists have long noted the benefits of lemon juice for beauty and youth. Lemon juice whitens, disinfects the skin of the face, removes unwanted pigmentation, strengthens hair, nails, eliminates blackheads, oily sheen. However, lemon juice can contain an excess of acid and can be harmful by provoking allergic reactions... Here are vitamins - groups B, C, A, E, D, in addition, lemon juice contains minerals fluorine, potassium, iron, sodium, magnesium and others.

Parsley

Parsley juice is also useful in cosmetology, pleasantly tones, whitens, removes puffiness, nourishes the skin of the face. Parsley juice is good for nails, but it can still cause harm in the form of allergic reactions of the body. This healing drink made from parsley has the following composition: vitamins - groups B, E, C, H, A, PP, minerals magnesium, potassium, selenium, zinc, choline and others. Parsley juice is also used as a drinking drink, as well as fresh zucchini, burdock, celery.

Birch

It is known that natural birch sap is also very useful, moisturizes, refreshes, makes the skin elastic, rejuvenates it, is used to restore hair, but if used improperly, it can have a harmful effect, its excess, like juice from zucchini or celery, can result in allergies. This drink is rich in fluoride, sodium, iron, silicon, calcium, vitamin C, like lemon, and more.

Cucumber

Cucumber juice is good for the skin - effectively moisturizes, smoothes wrinkles, whitens, even removing dark spots, and also gives it a smooth, even texture, the great thing is that it has no harmful properties. It contains vitamins A, B, C, E, PP, H, as well as a lot of minerals. The composition is similar to the juice of zucchini, celery and burdock.

Fresh juices in folk medicine

Traditional medicine has long used burdock juice to get rid of various ailments, its benefits in antibacterial, anti-inflammatory, choleretic, diuretic properties, they are treated with the gastrointestinal tract. Burdock juice is also used for oncology, liver diseases. In cosmetology, their hair is strengthened, it is noteworthy that this fresh juice will not cause any harm to the body. It contains polysaccharides, protein, essential oils, inulin, tannins and others, and in terms of vitamin C content, it is very similar to lemon.

From zucchini

Zucchini juice - useful in that it has a low glycemic index, it is used for diabetes, obesity. Fresh zucchini has a beneficial effect on digestive system, intestinal motility, blood vessels, heart, and during pregnancy prevents the development of pathologies in the child and the harm that he can cause minimal. Zucchini juice has some limitations - allergic reactions, serious illness Gastrointestinal tract. The composition of vitamins - groups B, A, E, PP, there is dietary fiber, useful acids and sugar, a mass of mineral elements useful for liver ailments.

Apple

Ripe apple juice is useful because it normalizes and rejuvenates all cells of the body, cleanses the blood, strengthens blood vessels, improves digestion, intestinal motility, increases hemoglobin, it is a choleretic and diuretic, but an excess of it can harm. Gastritis, peptic ulcer, allergies are the main contraindications to the use of this fresh juice. It contains vitamins - groups B, C, E, H and many others, as well as more than 20 useful minerals.

Potato

The benefits of potato juice are more likely in its cleansing properties. It also cures gastrointestinal ulcers, gastritis, heartburn, dyspepsia. Eliminates female problems - fibroids, inflammation of the appendages, erosion, but in order not to harm yourself, you should use it limitedly. Limit consumption for diabetes, low gastric acidity. Fresh potatoes contain vitamins - groups B, PP, E, C, A, as well as a lot of trace elements and minerals.

Freshly squeezed juices will heal the body, give vitality, retain a beautiful appearance for many years, heal and prevent many ailments, but all this is only with their moderate use.