What does the energy in the ingredient list mean? Many people don't have time to read the food ingredient list. Energy, protein, fat, carbohydrates and sodium are the most hygienic nutrients in China. Let's see what the energy in the ingredient list means.

What does the energy in the ingredient list mean? 1 protein, fats and carbohydrates.

Energy refers to the energy produced by protein, fat and carbohydrate in food in human metabolism. On the nutrition label, the energy of food is the sum of protein, fat and carbohydrate multiplied by the corresponding energy coefficient, marked by kilojoules (kj) and kilocalories (kcal).

basic concept

Nutrition, originally meant to seek health, refers to the role of human beings in absorbing nutrients from the outside world to maintain life activities such as growth and development. Or the process that the human body obtains and uses the materials and energy necessary for its life activities. Therefore, nutrition represents an "action", "behavior" or "biological process".

It should be noted that "nutrition" is not the same as food or nutrients. The understanding of the word nutrition in society is not correct enough, and the words are not appropriate, such as "rich nutrition", "rich nutrition" and "with or without nutrition". It is correct to change it to "nutritious" or "nutrient-rich".

A person's nutritional status refers to the physical condition related to nutrition, that is, the health status of food ingredients and the utilization status of nutritional ingredients. Can be divided into individuals and groups. Generally, some special nutrients will be involved. Sometimes, there will be a comprehensive evaluation of all nutrients, that is, the overall nutritional status, such as iron, protein, vitamins and so on.

The energy of the ingredient list is not heat. Heat and energy belong to two kinds of measurement. Heat refers to the heat generated after food is ingested into the human body, and energy generally refers to the energy needed to maintain life activities and do work. The unit of energy is joule, and the unit of heat is calorie. 1 calorie is about 4. 184 joules.

Is the ingredient list heat energy?

Energy is a relatively large category, and thermal energy belongs to one kind of energy. Nutrients that can produce calories in food include protein, fat and carbohydrates. If the heat generated by the oxidation reaction is supplied excessively, the excess heat will be stored as fat.

The human body consumes energy all the time. The energy on the ingredient list generally refers to the energy released by food during the whole digestion process in the human body. Energy is oxidized to generate heat for the body to maintain life, growth and exercise.

What does the energy in the ingredient list mean? The energy in the nutrient composition table refers to the chemical energy contained in food that can be absorbed by the human body. A table of food nutrients refers to a table that lists various nutrients contained in various foods, and usually lists the contents of water, protein, fat, carbohydrate, energy, several main minerals and vitamins per100g edible part.

nutrition

Nutrition refers to the function of human beings to absorb nutrients from the outside to maintain life activities such as growth and development, or the process of acquiring and utilizing substances and energy necessary for life activities.

The source of nutrition is generally nutritious food to meet the special needs of people with abnormal digestion or metabolism, or to meet people with special curative effects by controlling the intake of food or some nutrients.

Nutrients in nutritious food can be divided into two categories, macronutrients and micronutrients. Macronutrients include protein, fat, carbohydrates and some minerals.

The energy on the ingredient list is heat. The unit of heat is "kilocalorie" in nutrition. 1 kcal is the heat required for1000g of water to rise from 15℃ to 1℃. There are three kinds of calories in food, namely protein, carbohydrate and fat. Protein's calories are the basic nutrition for strengthening muscles.

Mainly from meat, dairy products and eggs, with 4 calories per gram; Carbohydrate calories are the main energy source of human body under normal circumstances, which are contained in rice, flour, noodles, bread, cereals, vegetables and fruits, and each gram of calories is also 4 calories; Fat contains 9 calories per gram, which is found in both oil and cream.

Energy refers to the energy produced by protein, fat and carbohydrate in food in human metabolism. On the nutrition label, the energy of food is the sum of protein, fat and carbohydrate multiplied by the corresponding energy coefficient, which is expressed in kilojoules (kJ) and kilocalories (kcal).

In order to maintain various physiological functions and life activities of the human body, the human body needs to obtain energy from food. Although there are various forms of energy in nature, the human body can only use carbohydrates, fats and chemical energy released by protein through biological oxidation, so these three substances are also called "three major productivity nutrients".

The above three factors can not all be digested and absorbed in the human digestive tract, and the digestibility is different. Therefore, in practical application, the energy produced by energy-producing nutrients is converted according to the following relationship: the energy-producing capacity per gram of carbohydrate is 17 kj, the energy-producing capacity per gram of fat is 37 kj, and the energy-producing capacity of protein is 17 kj. The energy value in the nutrient composition table can be calculated by the above coefficients.

What does the energy in the ingredient list mean? The energy marked on food refers to the heat contained in food.

The human body consumes energy all the time, and energy is provided by thermogenic nutrients in food. The energy marked on food is the sum of the calories produced by protein, fat, sugar, carbohydrates and other nutrients in food. These energies are oxidized to generate heat for the body to maintain life, grow and exercise.

But when the heat energy supply is too much, the excess heat will become fat and be stored. After a long time, the body will get fat.

Nutrients that can provide calories in the diet are sugar (carbohydrate), fat, protein, alcohol, organic acids and so on. The calories they contain are: sugar (carbohydrate) 4 calories, fat 9 calories, protein 4 calories, alcohol 7 calories and organic acid 2.4 calories.

The heat consumed by adults is utilized in three aspects: basic metabolism, activity and food thermal effect; During growth and pregnancy, tissue construction requires extra calories.

Extended data

Contents of food labels

The General Rules for Nutrition Labeling in prepackaged foods stipulates that prepackaged foods should indicate the contents of four nutrients and energy ("4+ 1") and their percentages in nutrient reference values (NRV).

Where "4" refers to core nutrients, namely protein, fat, carbohydrate and sodium, and "1" refers to energy. "nutrient reference values %(NRV%)" refers to the percentage of nutrients contained in food that should be taken in a whole day.

When reading, we must pay attention to whether the nutrient content values are given per100g (ml) food or per serving food. Paying attention to the portion size of each serving is helpful to understand the nutritional information of food more accurately. After reading the nutritional composition table of food, and then calculating how much weight you have eaten, you can clearly know how much nutrition you have ingested after eating a certain food, and then arrange your daily diet reasonably.