Can methanol be removed by heating homemade wine?

Every autumn is the season when grapes ripen. At this time, many people will buy a lot of grapes to make wine. Everyone feels safe to drink homemade wine. However, one problem with homemade wine is that the methanol content is relatively high. If you drink a lot of methanol, it will cause some harm to the body. So, can the methanol be removed by heating the homemade wine?

Can methanol be removed by heating homemade wine?

1. Home-brewed wine is prone to methanol exceeding the standard, so how to reduce the methanol in the wine? Industry insiders said that from a chemical point of view, whether it is homemade wine or other wine, as long as it is homemade and you want to reduce its methanol, you can choose to heat it. Because the boiling point of methanol is close to 30℃, as long as it is heated to 30℃-40℃, methanol will evaporate as the temperature rises.

2. The heating here does not mean putting the wine directly on the stove to heat it. Although the methanol will evaporate during heating, the high temperature will also affect the taste. It is recommended that citizens pour the wine they want to drink into a container before drinking homemade wine, then put the container into a thermos cup or thermos bucket, and then pour boiling water into the thermos cup or thermos bucket to heat it. From a physical point of view, boiling water is generally around 90°C. It takes a process to transfer its heat from the thermos to the wine container. This operation actually does not raise the temperature of the wine very high, and does not affect the taste like direct heating.

Ways to reduce methanol production

First, add some high-purity yeast.

Wine is made through natural fermentation. Therefore, too many bacteria and microorganisms in the air or containers may produce more methanol and fusel oil. Adding yeast can prevent the growth of spoilage bacteria. Thus, the methanol content is reduced.

Second, choose fresh, uncorrupted grapes. The choice of grapes may lead to poisoning.

Because grapes are sprayed with pesticides during their growth process. So when making homemade wine, be sure to wash the grapes thoroughly. Also, choose fresh grapes. Some people deliberately do not wash it thoroughly, saying that it is to allow microbial fermentation on the surface. This practice is not advisable. Like Ms. Li mentioned above, it is also wrong to make wine with grapes that are about to go bad.

Third, make sure the container is clean. It is best to choose glass, ceramic or other containers.

The choice of container is crucial. The entire brewing process requires the use of many containers. Among them, the most important one is the fermenter. Fermentation in containers such as glass and ceramic is the safest and most reliable. Readers must remember that you should not use stainless steel or iron containers as fermentation containers. Otherwise, poison may be brewed.

Fourth, hygiene and cleanliness must be ensured. The fermentation time generally takes 7 days.

During this process, if the grapes are infected by bacteria, they are likely to rot. Alternatively, if the fermenter is not cleaned properly or the container is not clean during stirring, bacterial infection may occur. At this time, readers need to pay special attention. During the brewing process, be sure to keep the containers and hands clean. "Water-free and oil-free" is the best effect.

Fifth, control the temperature.

Too high temperature can cause enzyme mutation and produce toxic substances.