显示标签为“acidity regulator”的博文。显示所有博文
显示标签为“acidity regulator”的博文。显示所有博文

2015年10月13日星期二

Food additives in wine


Wine is the most common drink on all occasions, different occasions need different wine. Every time we choose wine in the supermarket, we may spend a lot of time for different demand. For we try our best to make the party different and meaningful. Many people may also make wine by themselves at home, and the taste is good as well. And the growing consumption of wine makes the wine production industrialized. As a result, wine additives are also popular. Let's talk about the food additives in wine here.

Acidity regulator is popular in food industry. Acidity regulator can adjust food ph to improve the flavor. Its effective application is controlled by the characteristics of food requirement. Because many of the organic acids are normal components of the food or involve in the body's normal metabolism, so it is high security and widely used. Acidity regulator is the compounds that adjust the acidity of the wine. The acidity of the wine is mainly influenced by climate. Usually grape in the hot production region appear low acidity problem, while wine region in the cool climate may have the excessive acidity. Therefore, according to the acidity of the grapes and wine styles, winemakers often acidification or deacidification in the brewing process. Common acidifier is tartaric acid, But many of the famous wine-producing regions have banned this practice. The common use De-acidifying agent are some alkaline compound such as sodium bicarbonate. By the way, acidity regulator like Malic Acid is always can be seen on the labels of drinks.

Tannins are important components of red wines. They are from grape skin, grape seed and grape stalks. But different styles of wine have different demand to tannin, so there is no need to add tannin in the wine sometimes. Common method for adding tannins to the wine is have the wine been preserved for years. As is known to all, wine is a very fragile thing and is easy to be affected by environment. At this time, antioxidants in food is necessary. Because its one of the greatest enemies is oxygen. It may be oxidized if it is not handled well. Fortunately, sulfur dioxide is a good source of antioxidants, many winemakers will add the right amount of sulfur dioxide based on the state of the wine. In addition, sulphur dioxide also has antiseptic effect, this is benefit for the the fermentation of the wine.



Before bottling most winemakers would choose gel and filtered to ensure the stability of the wines. Sterile filtration usually is the last process before bottling. The size of the membrane pore is extremely small, which can filter out the slightest impurity in wine, and even erases all traces of the chemical additives in the brewing process. For people like to pursuit the best taste all the time.

2015年8月31日星期一

Acidity regulator and its application




Acidity regulator, also known as sour agent or acidifying agent. It is a food additive that gives sour flavor to make product standardization. In addition, sour agent  in food processing is also often used as components of Bulking agents, color fixatives, antioxidants and preservatives. Sour agents make you feel snappy, stomachic and helps dissolve cellulose, calcium, phosphorus and other substances. It promotes the digestion and absorption of nutrients, as well as antiseptic and antibacterial.

The sour of sour agent is affected by:
Temperature  Sour will strengthen as the temperature increases, but compared with bitter and sweet, sour affected least by temperature.
Hydrogen Ion Concentration  Whether strong or weak of a sour taste has something to do with the hydrogen ion concentration.
Total Acidity And Buffer
The Nature Of The Anion
Sour Mixed With Other Tastes

Common used sour agents:
1. Citric Acid: Citric acid do well in anti-corrosion, especially bacteria reproduce. It has strong ability to chelate metal ions. It can be used as antioxidants to delay the oxidative rancidity of oils, at the same time it can also be used as stabilizers for pigments to prevent discoloration of fruit and vegetable. Paired buffer solution with sodium citrate and potassium citrate can improve the quality of ice cream, or the cheese is easier to shape and cut. Citric acid has a soft and snappy flavor, and the acid sense is the highest in mouth.
2. Lactic acid: Transparent colorless or pale yellow syrup liquid, odorless or have a slight acidity, and it can be mixed with water, alcohol, glycerine arbitrary. Generally 80% ~ 90% lactic acid contains 10% ~ 10% lactic acid anhydride. It is often used in fermented food, beverage, preparation of wine, jam, canned and candy, etc.
3. Tartaric acid: White crystalline powder, odourless, easy to dissolve in water and slightly hygroscopic. Grapes contain a lot of tartaric acid. It is used in the production of aromatic beverage and syrup, citrus fruit, jam, cans, candy, grape juice and products.




What you should pay attention to:
The anion not only affect the flavor of the sour agent, but also affect the flavor of food.
Citric acid has certain stimulation, can cause the digestive system disease. We should strictly pay attention to the safety when using it.
Different kind of acid will produce different taste, such as citric acid, ascorbic acid and glucose acid produce the sour taste with cool and refreshing feeling, but sour disappear fast. Phosphoric acid and tartaric acid is weaker, and their acidity was disappear quickly. Malic acid with a bitter taste, and the acid produce and disappear is slowly. Fumaric acid has a strong astringency and the sour can be last for a long time.