Many people think that vegetables are sugar free. However, this statement is incorrect. There are no fruits that do not contain calories. Therefore, it is erroneous to believe that by eating only fruits, you can lose weight. This is not entirely true. There is a benefit from such a diet, but it should be made more balanced. Many fruits contain a large amount of carbohydrates, and this is nothing like glucose, lactose, fructose. Because of these indicators, they are also excluded from the diet menu.
Some more facts
Digesting fruits requires a lot of energy, much more than the calorie content of these products. You need to know how useful fructose is in order to properly use its properties. All fruits can be conditionally divided, depending on the amount of this substance, into low- and high-calorie ones.
Least calories are found in peaches, apples, melons, lemons, grapefruits, tangerines, oranges and pineapples. The second category includes grapes, bananas, quince, kiwi, pears and mangoes. These fruits contain a large amount of carbon.
The right fruit
Each person will be useful to know the composition of fruits. For example, fructose, what is it? After all, it is the main constituent substance of these products. To maximize the benefits of fruits, they must be eaten properly. If you add fruit to the diet in the morning, then a lot of fast carbohydrates, organic acids, vitamins and minerals enter the body.
In addition, fiber, present in many fruits and berries, helps
cleanse the intestines. If you eat fruit after eating, then the glucose level is restored. An energy reserve appears in the body. It follows that these foods are best consumed in the morning. But is fructose so beneficial? What is it, in what quantities is it harmless to the body?
What is fructose?
Many people refuse to take fruits due to the high content of carbohydrates. This is not entirely correct. Indeed, in addition to fructose, they also have vitamins, minerals and fiber. Their benefits for the body are weighty. You need to know in what proportions fructose is not harmful. What it is? This is the simplest group of carbohydrates - monosaccharides.
Outwardly, they resemble transparent crystals, and the taste is sugar. Fructose contains oxygen and hydrogen. Hydroxyl groups give sweetness to this substance. When heated, fructose dissolves and, when burned, turns into steam. If it is combined with enzymes, the fermentation process takes place and alcohol, lactic and
acetic acid are released. Fructose is found in nectar of flowers, honey, some seeds and in fruits.
Fructose and glucose
These two substances are very similar to each other. Fructose is sweeter, but is absorbed faster by the body. This is not affected even by metabolic disorders. The formula of fructose and glucose has a special chemical structure. It consists of 6 oxygen and carbon atoms and 12 hydrogen atoms. These are two halves of the sucrose molecule. Fructose and glucose can be called high energy carbohydrates. Fructose contains 376 kcal per 100 grams, and glucose - 375 kcal. But still, what is fructose useful for?
It is much more slowly absorbed into the bloodstream, which is why nutritionists are more inclined to eat this substance. While fructose and glucose are in foods, their activity is minimal. Once in the body, they, under the influence of insulin produced by the pancreas, begin to become more active. There are processes of biosynthesis, fermentation and energy metabolism. If there is not enough insulin in the body, then, regardless of the needs, the residues of fructose and glucose are removed with urine.
Carbohydrate breakdown
This process depends on the conditions and some characteristics of the body. There are two pathways of decay: fermentation and respiration. The reaction that occurs is called glycolysis. The first glycolysis reaction is the phosphorylation of D-glucose and the formation of D-glucose-6-phosphate. In the second stage, D-fructose-6-phosphate is formed. This is the main glycolysis process. This whole mechanism is necessary to maintain blood sugar levels. In the liver, fructose is more easily converted to glycogen and is more actively involved in metabolic processes. Thus, this substance is useful for the body, for metabolic processes.
Fructose action
Fructose, getting into the human body, causes a feeling of hunger. It is digested quickly, but the process of absorption into the blood lasts a very long time. This substance is a fast carbohydrate and is essential for the body. Fructose is considered a dietary product and is replaced by sugar in tea, pastries and desserts. It can be used for diabetes instead of glucose. Fructose reduces the need for insulin. There are also negative sides. Large doses of fructose disrupt lipid metabolism, fats accumulate on organs, and not under the skin. This leads to heart disease. This substance in large quantities upsets the energy balance. In small amounts, fructose is safe, so you need to monitor the calorie content of this product.
The benefits and harms of fructose
Summing up, we can say that fructose has a lower calorie content than sugar. It does not contain preservatives and makes baking lush and soft. It is recommended for diabetes, as it slightly increases blood sugar. Fructose helps break down blood alcohol quickly.
Negative qualities include hunger, which causes fructose, which leads to overeating. There is also the possibility of a risk of heart disease. Scientists have proven that this substance causes early aging of the body. Fructose reduces insulin production and is addictive to glucose, which leads to diabetes. This substance is a strong allergen.
Conclusion
Many vegetables and especially fruits have fructose. What is this, we have already said. The harm or benefit of this substance depends on the amount of its consumption. Therefore, always count calories so that the body gets everything you need in the right proportions. In this case, it will work smoothly, like a finely tuned mechanism. Fruits should be present in the diet daily, enriching the body with vitamins and other useful substances, but not in very large quantities.