Carbonated beverages are products that are carbonated with carbon dioxide under certain conditions and are a type of soft drink (non-alcoholic beverage).
According to China's classification standards for soft drinks, carbonated beverages (soda) are divided into: juice-type carbonated beverages, fruit-flavored carbonated beverages, cola-type carbonated beverages, low-calorie carbonated beverages, and other types of carbonated beverages.
Juice-type carbonated beverages are carbonated drinks to which a certain amount of original juice (not less than 2.5% by proportion) is added, such as orange soda, orange juice soda, pineapple juice soda, or mixed fruit juice soda. Because these sodas contain a certain amount of original juice, in addition to the unique color, aroma, and flavor of the corresponding fruits, they also have higher nutritional value. Under the current trend in the food industry towards health, functionality, and nutrition, fruit juice sodas combine the rich nutrition and pure taste of fruit juice with the refreshing and unique mouthfeel of carbonated drinks. They have a harmonious and soft aroma, a pure taste, and are refreshing with an appropriate turbidity; some products may have a small amount of fruit pulp sediment. They are deeply loved by people, especially teenagers, and their production has greatly increased.
Fruit-flavored carbonated beverages are carbonated drinks with edible flavorings as the main flavoring agent, and the original juice content is less than 2.5%, such as orange soda, lemon soda, etc. These sodas have bright colors, are inexpensive, and have a cooling sensation. They come in a wide variety and are the highest in production volume. Different flavorings and colorings can be used to imitate the color and aroma of fruits to produce various fruit-flavored sodas.
Cola-type carbonated beverages specifically refer to carbonated drinks containing caramel color, cola flavorings, or mixed spices with a cola nut and fruit aroma. They have a harmonious and soft aroma, a pure and refreshing taste, and a cooling, sharp sensation. Due to their unique flavor, products containing caffeine also have a refreshing effect. People often have their own preferences for these products, especially famous brand products like Coca-Cola, Pepsi-Cola, and Feichang Cola, which guide consumer trends.
Low-calorie carbonated beverages are all types of carbonated beverages and soda water in which sweeteners are used in whole or in part to replace sugar, with a calorific value not exceeding 75KJ/100mL. They have a color that matches their name, a relatively harmonious and soft aroma, and a pure, refreshing, and cooling taste.
There are also some carbonated beverages that contain plant extracts or use non-fruit-flavored edible flavorings as flavoring agents to replenish electrolytes, energy, etc., lost by the body after exercise, such as ginger ale, sports soda, etc. Among them, sports drinks are beverages whose nutritional composition and content can meet the physiological characteristics and special nutritional needs of athletes or people who participate in physical exercise and manual labor.
In recent years, China's beverage industry has developed rapidly, but carbonated beverages have always occupied a large share of the market. The fizz and stimulating taste of carbonated beverages come from carbon dioxide. The amount of carbon dioxide used in the beverage depends on the specific flavor and brand. During processing, low-temperature liquids and increased pressure are used to dissolve more carbon dioxide to accelerate carbonation. When consumed, the increase in temperature causes the carbon dioxide to vaporize, producing a stimulation and taking away body heat, thus giving the drinker a cooling sensation.
Carbon dioxide improves the flavor, participates in providing an acidic environment, creates a stimulating mouthfeel, and gives carbonated beverages their characteristic foaming appearance. First, it regulates the flavor; in the beverage, carbonic acid plays a role in adjusting the pH value, making the flavors of various ingredients more harmonious. Secondly, it has a preservative effect. Carbonic acid can lower the pH value, making it difficult for microorganisms other than acid-resistant bacteria to grow and survive. The presence of carbon dioxide creates an oxygen-free environment in the container, and many aerobic bacteria cannot survive either. Carbon dioxide also creates a certain pressure in the container, which can also disrupt or even kill the growth conditions for microorganisms. These characteristics give soda and sparkling wine-type beverages better preservative ability, thereby extending their shelf life. Therefore, the carbon dioxide content in carbonated beverages is an important characteristic quality indicator.
Carbon dioxide is easily released as the temperature rises, which can easily lead to the phenomenon of carbon dioxide content not meeting standard requirements in the packaging of different products. The reasons may be high temperature, low pressure, or mechanical instability during production. It could also be due to poor gas retention performance of the packaging material, causing the gas content in the product to be below the standard requirement in the middle and later stages of its shelf life. Another reason is that the temperature is too high during transportation and storage, causing the bottle caps to loosen.
The packaging of carbonated beverages on the market is diverse, including plastic bottles, metal cans, glass bottles, etc., with varying volumes. When consumers choose products, they should first check the label to see if the production date, shelf life, manufacturer's name, and address are complete. Whether the ingredients in the ingredient list meet the standard requirements, and whether the product category is their favorite brand and variety. Because juice-type carbonated beverages have certain nutritional value, they are especially suitable for teenagers and children. Low-calorie drinks are very suitable for people with special requirements for sugar and calorie intake, such as diabetics. Sports drinks are suitable for people with physiological and special nutritional needs who engage in physical exercise and manual labor. Choose products that were recently produced, especially in the summer and autumn seasons, and try to choose cans that are firm and not easily deformed when purchasing. Choose products with different packaging according to your needs, because unfinished beverages will lose carbon dioxide during storage, affecting the taste when consumed again. A special reminder for consumers is that for your own health, it is best to purchase well-known brand products from formal sales channels when buying carbonated beverages.