On a hot summer day, when you are sweating like rain, what you enjoy most is a bottle of iced drink. However, what kind of drink should I choose? How many secrets are hidden behind the sweet drink that you don't know? Let's analyze it for everyone.
Classification of beverages
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If you want to choose drinks correctly, you must first understand the classification of drinks. According to the classification of GB/T l0789-20 15 "General Rules for Drinks", China beverages can be classified into 1 1. Among them, carbonated drinks (soft drinks), fruit and vegetable juices, protein drinks, tea drinks, coffee drinks and special-purpose drinks are the most common in daily life, and they are also often chosen by everyone.
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Carbonated drinks (soft drinks)
Carbonated drinks refer to drinks filled with carbon dioxide gas under certain conditions, including cola, fruit juice, fruit, soda, ginger ale and so on. The main components are fructose syrup, white sugar and phosphoric acid.
A can of 330mL carbonated beverage can provide about 6 10.9 kilojoule of energy for human body, accounting for about 8% of the energy needed by human body; Excessive intake of refined sugar will turn into fat, leading to obesity; A large intake of phosphoric acid will affect the absorption of calcium.
For teenagers in the growth and development period, long-term intake of carbonated drinks will affect their growth and development, cause dental caries and increase the probability of fractures; Excessive intake of carbon dioxide will affect the normal digestion and absorption of the human body and affect appetite.
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Fruit and vegetable juice
Fruit juice and vegetable juice drinks refer to drinks made from fruits and/or vegetables by processing or fermentation, including 100% fruit juice (vegetable juice), fruit juice and vegetable juice drinks, compound fruit and vegetable juice (pulp) and its drinks, pulp drinks and fermented fruit and vegetable juice drinks.
Among them, the content of fruit juice or vegetable juice in fruit juice and vegetable juice beverage should be above 10%; The fruit juice content of fruit juice beverage should be above 5%.
Although this beverage can provide some nutrition for the body, it will lose a lot of cellulose during processing. Although cellulose can't be absorbed by human body, it has a good effect of cleaning intestines.
At present, teenagers' diet is mainly fine food, and their intestinal health is worrying, and constipation often occurs. Therefore, if you want to get nutrition through fruit and vegetable juice, it is better to eat fruits and vegetables directly.
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Protein beverage
Protein beverage refers to beverages made from milk or dairy products, or plant fruits, seeds or nuts with a certain protein content, including milk-containing beverages, plant protein beverages and compound protein beverages.
Among them, milk-containing beverages include formula milk-containing beverages and fermented milk-containing beverages, and their milk protein content should be above 1%; Milk-containing beverages also include lactic acid bacteria beverages, and their milk protein content should be above 0.7%.
Vegetable protein drinks include soybean milk (pulp), soybean milk drinks, coconut milk, almond syrup, walnut dew, peanut syrup and so on. The protein content should be above 0.5%.
100mL almond syrup can provide 0.6g of protein and 6.8g of carbohydrate, while the daily protein required by human body is 65g. Protein's protein supply of beverages is far from the human body's demand. On the contrary, it will make drinkers consume too much refined sugar and increase the risk of dental caries, type 2 diabetes, dyslipidemia and overweight.
For teenagers, the lack of protein will affect their growth and development, leading to malnutrition.
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Tea Drinks
Tea beverage refers to a beverage made of water extract of tea leaves or its concentrated solution, tea powder, etc. , including tea drinks (tea soup), flavored tea drinks, mixed tea drinks, etc.
Among them, flavored tea drinks are divided into juice (flavored) tea drinks, milk (flavored) tea drinks and carbonated tea drinks.
In tea drinks, the content of tea is much lower than that of sugar. In order to avoid consuming too much sugar, you can choose sugar-free tea drinks.
However, caffeine and tea polyphenols contained in tea will excite nerves, easily lead to dependence, and also lead to calcium loss, thus affecting the growth and learning efficiency of teenagers. For women, tannic acid in tea will interfere with the absorption of iron and easily lead to iron deficiency anemia.
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Coffee and drinks
Coffee drinks refer to drinks made of water extract of coffee or its concentrated solution and instant coffee powder, including espresso drinks, coffee drinks and decaffeinated coffee drinks.
When choosing this kind of beverage, you should try to choose the beverage marked with coffee solid information to avoid choosing the wrong coffee-flavored beverage.
Coffee drinks contain caffeine. Excessive intake of caffeine can lead to headache, fatigue, excessive excitement, memory loss and low learning efficiency. Therefore, for teenagers, it is still necessary to minimize caffeine intake.
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Special purpose beverage
Special purpose drinks refer to drinks that meet the needs of some special people by adjusting the composition and content of nutrients or adding ingredients with specific functions, including sports drinks, nutritious drinks, energy drinks and so on.
This kind of drinks mainly provide sugar, vitamins and minerals for the body. For example, sports drinks mainly help people who sweat a lot after exercise to replenish lost electrolytes and maintain the balance between physical fitness and body temperature.
Therefore, it is mainly aimed at athletes or people who often participate in fitness, and it is not suitable for ordinary people to drink it often. If the general population consumes a lot of sugar, it will increase the risk of dental caries, diabetes and obesity; Excessive sodium intake will increase the risk of hypertension, cardiovascular and cerebrovascular diseases and fractures.
It is a great blessing to drink with us in hot summer, but we should also pay attention to friends not to drink cold drinks that are too cold, let alone drink cold drinks.
Editor: Hu Xiaoyu
(This article is selected from the August issue of Knowledge is Power, 20 17. Author: Li, original work)