Green apples: composition, calories and glycemic index
Perhaps everyone knows about the benefits of apples, as well as the fact that green apples are considered a dietary product. What is the reason for this and is the apple diet so useful, as they say about it?
Chemical composition
Even one small apple eaten daily can bring great benefits to the body. It's all about its chemical composition, which includes vitamins, micro and macro elements, acids, fiber, pectin.
The sour taste of an apple is due to a large amount of organic acids - malic, citric, formic, tartaric. “Sourness” is also provided by vitamin C, which is rich in fruit. Along with it, there are vitamins B, A, PP, E. This allows us to talk about the immunostimulating and tonic, strengthening effect of fruits.
Green apple also contains:
- iron;
- potassium;
- calcium;
- iodine;
- sodium;
- magnesium;
- copper;
- molybdenum;
- zinc;
- fluorine.
It turns out that green apples improve the functioning of literally every system of the human body. They are especially useful for the cardiovascular and nervous systems.
More than 85% of green apples are made up of water, and this is a structured liquid, similar to that which washes the internal organs. This means that apple juice (and this is water with minerals, acids, vitamins dissolved in it) is fully absorbed by the body.
Fiber and pectins help improve digestion, and are also found in fairly large amounts in an apple.Green apples, despite the sour taste, also contain sugar. True, their number here is significantly inferior to the content of sugars in sweet red and yellow apples.
Number of calories
A green apple is rightfully considered a dietary product, since it contains 35-40 kcal / 100 g. The low calorie content is due to the low content of carbohydrates and sugars. The amount of protein and fat in an apple is about the same and usually remains the same, while the amount of carbohydrates in green apples of different varieties may vary slightly.
Knowing the calorie content of 100 grams of the product, you can roughly calculate the energy value of a whole apple. One medium fruit weighing 80-90 g contains approximately 30 kcal. Along with the mass of an apple, the number of kilocalories in it also grows, therefore, a larger fruit, weighing 170-200 g, contains about 70-85 kcal.
These data are valid for fresh fruits, while dried and dried apple slices or rings have a high energy value - about 230 kcal / 100 g. This is due to the evaporation of moisture from the product, as a result of which the concentration of vitamins and minerals, as well as sugar, increases in it . In other words, dried apples are a concentrated healthy, but very high-calorie product.
The low calorie content of a green apple, as well as the presence of fiber in it (100 g of an apple can provide 20% of the body's daily requirement for fiber) and useful elements make this product especially useful for those who want to lose weight.
The nutritional value
With an average calorie content of a green apple of 35-40 kcal, the balance of BJU in it looks something like this - 0.4 / 0.4 / 10 g.
As already mentioned, carbohydrates in different varieties may be contained in greater or lesser quantities.So, the popular variety of Granny Smith apples has a calorie content of 47 kcal, carbohydrates account for 9.7 g. Since these fruits are very large (one piece of such a fruit can weigh up to 300 g), the calorie content can reach 140-150 kcal.
Another popular variety, Semerenko, boasts a lower calorie content - only 37 kcal / 100 g. Naturally, the carbohydrate content in it is lower - 9 grams. At the same time, compared with "Granny Smith", "Semerenko" is small, the average weight is 100-120 g. It turns out that 1 pc. An apple contains about 40 kcal.
It was not for nothing that we gave the sizes of apples, since this should also be taken into account when compiling the menu. The calorie content of an apple depends on its nutritional value and size, it is wrong to assume that 1 apple will not make a big contribution to KBZhU. You always need to calculate the energy value for a specific fruit of a certain variety.
To date, there is a lot of debate about whether it is worth including an apple in the calculations of KBJU. Most nutritionists still give a positive answer to this question, especially if losing weight is a careful calculation of calories. The calorie content of some green apples (we are talking about the whole fruit) is quite high (for example, the same Granny Smith) and reaches an average of 150 kcal.
If you eat 2 of these apples a day, then calories accumulate for a third of dinner or a full snack.
Glycemic index
The glycemic index (GI) refers to the rate at which sugar from incoming foods enters the bloodstream. A large amount of sugar, simultaneously arriving in the body, puts a large load on the pancreas, which produces insulin. The amount of the latter also increases dramatically, which leads to a jump in insulin.
The body, in an effort to quickly neutralize sugar, converts it into body fat.This is why high GI foods cause weight gain, obesity.
However, the GI of food is monitored not only by those who lose weight, but also by people with diabetes. With this disease, an insufficient amount of insulin is produced in the body (this is with the second type of diabetes, with the first type insulin is not produced at all, but is injected). Sugar that comes in large quantities does not have time to break down, so organs and systems do not receive the necessary glucose, fructose, sucrose, which disrupts their activity.
The inability to process fast carbohydrates, which is sugar, leads to metabolic disorders. At the same time, a high concentration of sugar remains in the blood of a diabetic, which provokes a sharp deterioration in the condition, in severe cases - to coma. Diabetics can avoid this by consuming just enough sugar that their insulin-deficient body can process.
A green apple will not harm either those who follow the figure or diabetics, since its GI is 30 units. In addition, the high fiber content helps to partially neutralize sugar, slowing down its absorption by the intestines. As a result, blood sugar rises slowly and evenly.
Another merit of foods with a low glycemic index is the long-lasting feeling of satiety that they provide. This is again explained by the fact that the level of sugar rises rather slowly, for a long time, and most importantly, smoothly.
Application in dietary nutrition
Low calorie content and low glycemic index allow the use of green apples in dietary nutrition. However, the beneficial properties of the fruit do not end there.
Apples help to process food more quickly and efficiently, which is largely due to the presence of acids and fiber in the composition. Dietary fiber improves intestinal motility, which affects the speed of passage of food through it and its absorption. In addition, fiber, being an indigestible element, passes through the intestines and is excreted. However, along with it, toxins, mucus and toxins are removed.
Better assimilation of food contributes to the acceleration of lipid and metabolic processes, and this is a necessary condition for losing weight. Green apples also contain potassium, which removes excess fluid from the body (one of the factors in the development of cellulite, the cause of edema), and sodium, which ensures the optimal ratio of fluids and salts in the body.
Finally, the richness of the mineral and vitamin composition of this fruit makes it possible to avoid the deficiency of certain microelements and vitamins, which is often observed when following a strict diet.
Green apples fit perfectly into the system of proper nutrition. Most of those who adhere to a healthy lifestyle consume one apple a day daily, usually in the morning. In combination with proper nutrition and a balanced diet, sufficient physical activity, apples help maintain good physical shape and show a tonic effect.
However, for a more pronounced effect, you can resort to an apple diet. It can take the form of fasting days (1-3 days) or express diets (their usual duration is 3-14 days).
However, the name "apple" does not mean that only green apples should be consumed. Despite the low calorie content, such a diet will lead to weight gain and health problems.The fact is that apples do not have enough fats, proteins and amino acids, which will cause metabolic disorders. A disturbed metabolism, as we have already found out, is a direct path to excess weight.
In addition, a high content of acids, even in a healthy person, can cause abdominal pain. Is it worth saying that such diets are taboo for people with high acidity of gastric juice, having gastritis, colitis, ulcers and other diseases of the gastrointestinal tract of an inflammatory nature.
Such diets involve the consumption of 3-5 green apples per day. They do not need to be subjected to heat treatment, but should be eaten with the peel. Be sure to add proteins and fats to the diet - chicken breast, turkey, lean sea fish, lean beef, eggs, vegetable oils, dairy and sour-milk products. To reduce weight, you should reduce the amount of salt consumed, observe the drinking regimen, give up tea (you can use herbal decoctions) and coffee.
Unloading days on apples should not last more than 1-2, maximum 3 days. At this time, about 2 kg of apples are consumed per day.
The diet should be supplemented with egg white, kefir. It is important to drink plenty of water. If keeping a diet is difficult, and you feel a strong attack of hunger, it is allowed to eat vegetable broth, a piece of lean meat or chicken.
See below for details.