1, methanol: methanol is a toxic chemical substance, and excessive intake will cause serious harm to human health. Excessive intake of methanol can cause organ dysfunction such as central nervous system inhibition and visual impairment.
2. Heavy metals: self-made white flour, such as copper pots and galvanized pipes, cannot guarantee its safety, and the materials contain trace but still risky metal elements such as iron, copper and zinc. Long-term exposure to elements will accumulate in the body, leading to chronic poisoning and damage to organs such as liver, kidney and central nervous system.
3. fusel oil: fusel oil is an important component of liquor, and a proper amount of fusel oil can give liquor a unique flavor. Improper treatment or storage process leads to excessive fusel oil content, resulting in bitter taste or white odor. Odor comes from mildew, continuous fermentation or other pollutants, which has potential risks to human health.