Background of Vinegar Production
The production of vinegar, especially high-quality products like balsamic vinegar, is a time-consuming manufacturing process. Vinegar is an acidic liquid produced by oxidation or ethanol fermentation. The parent of vinegar, a substance of cellulose and acetic acid bacteria, converts alcohol into acetic acid through oxygen, and the acid produced by this oxidation process gives vinegar its typical sour taste and slightly pungent odor. The overall chemical reaction of Acetobacter (Acetobacter) is: C 2 H 5 OH + O 2 CH 3 COOH + H 2 O. The acetic acid concentration of table vinegar is between 4% and 8%, and the concentration of pickling vinegar is increased to 18%.
The role of ultrasound in vinegar
Ultrasound can be used to make vinegar for a variety of purposes. All effects can be easily demonstrated by sonicating a vinegar sample for a few seconds.
Soft taste, low acidity
Sonicated vinegar, its acidic, sour taste becomes smoother and more delicious. This is an interesting application, there is a high demand for vinegar in life, and it can be used in cooking to make delicious food. Vinegar is the condiment of choice for seasoning salad dressings, meat and fish dishes, sauces, and desserts. A particularly premium balsamic vinegar can also be enjoyed as an aperitif or as a digestive.
Vinegar seasoning
In order to diversify the taste of ordinary vinegar, vinegar is usually seasoned with different flavoring substances after oxidative fermentation, such as herbs (such as sage, thyme, oregano, tarragon, rosemary, basil), ginger, pepper or Fruits (eg raspberries, blackberries, oranges, mangoes, limes). With the aid of ultrasound, the extraction promotes the release of fragrances from the cellular matrix into the vinegar.
Ripening and soaking of vinegar
Vinegars with barrel-ripened woody flavors are typically good-quality vinegars. Because the maturation and aging of vinegar in wooden barrels (such as cherry, chestnut, oak, mulberry, ash, or juniper barrels) is very costly and extravagant, vinegar is usually made in plastic tanks. To mimic the famous barrel-matured wood flavor, vinegar producers add oak flour or oak chips (so-called “alternative rubber”) or wood-flavored distillates. For a satisfactory oak seasoning effect, usually the oak chips must remain in the vinegar for at least 4-6 weeks so that the liquid can be absorbed by the wood fibers. The use of ultrasound can significantly speed up this replacement process. Ultrasonic treatment of vinegar with additive oak flour or oak chips, high-intensity ultrasonic waves and the resulting ultrasonic cavitation help to extract oak flavors. Ultrasound creates alternating high and low pressure cycles, enabling higher quality transfer between plant cells and vinegar. In addition, because ultrasound is a very effective dispersion method, the fine particles of oak flour are easily dispersed in liquid media.
Ultrasound is already a well-known method for extracting flavors in the food industry, breaking cell walls through its high-energy cavitation force, making intracellular substances available. Because the plant material (wood fibers) is broken down into smaller particles, more flavor essence is available to the tongue’s taste nerves. A second advantage of ultrasound is the efficient dispersion of solid particles into liquids.
Coloring of vinegar
Ultrasonic technology is an effective method of emulsifying, dispersing and dissolving, which can be used for emulsifying, dispersing and dissolving colorants in vinegar, which is helpful for the production of vinegar. For example adding caramel color to vinegar, caramel coloring (food additive E150) is one of the oldest and most widely used food coloring. This highly viscous colored liquid helps give the vinegar the desired dark brown color.
Post time:Apr-21-2022