Cooking oil is essential for daily cooking.
In case of vegetable oil is made from natural materials such as rape, soya beans and corn, which undergo many processes before the oil is squeezed out of them and delivered to us.
A vacuum is used for deodorization in the final process, just before the product is packed into containers.
This article explains how vacuums works for cooking oil.
How cooking oil is produced.
After the oil has been extracted from the edible oil material, impurities are removed.
Then, after bleaching, the wax is also removed.
If there is wax, it will harden when the temperature is low.
The removal of wax is essential for vegetable oil, as the JAS standard requires that it does not turn cloudy or solidify after a certain period of time at low temperatures.
The vacuum is then utilized in removing odors from the oil.
The deodorization process is essential because before deodorization, the original smell and other odors of the material remain.
After deodorization, the oil is placed in bottles or plastic containers.
Relationship between deodorization and vacuum
Cooking oil odor components include aldehydes, alcohols and ketones.
Those odor components are deodorized by blowing water vapor under vacuum conditions.
Deodorization can remove ingredients that degrade flavor and quality, while also removing ingredients that make it taste good.
In fact, it can be said to be a very difficult process to combine, because inappropriate amount of steam and vacuum can deteriorate the flavor and quality of the oil.
The higher the vacuum, the less time it takes to deodorize.
In recent years, consumer orientation has tended to favor cooking oils, especially vegetable oil with a low odor,.
For deodorization, the flavor and quality depend on the temperature, vacuum and the amount of steam.
Consumer preferences have become more diverse, and high-temperature, short-time deodorization and low-temperature, long-time deodorization are now being adopted, and the degree of vacuum is also changing.
We offer a variety of vacuum equipment such as sputtering equipment.