Usually, methanol and other fusel exceed the standard, which can be tasted by multiple comparative tasting or individual tasting, but it cannot be accurately quantified.
Wine is a kind of fruit wine brewed from grapes. Its alcohol content is higher than beer and lower than liquor. Rich nutrition and obvious health care function. Some people think that wine is one of the healthiest and most hygienic drinks. It can regulate the performance of metabolism, promote blood circulation and prevent the increase of cholesterol. It also has diuretic, liver function stimulating and anti-aging effects. It is also an auxiliary drug for treating heart disease, and can prevent diseases such as scurvy, anemia, beriberi, dyspepsia and keratitis. Drinking wine often can reduce the incidence of heart disease, blood lipid and arteriosclerosis.
Methanol (CH3OH) is a saturated monohydric alcohol with the simplest structure, with CAS number of 67-56- 1 or 170082- 17-4, molecular weight of 32.04 and boiling point of 64.7℃. It is also called "lignin alcohol" or "lignin essence" because it was first discovered in dry distillation wood. It is a colorless, alcoholic and volatile liquid.
The lowest dose of human oral poisoning is about 100mg/kg body weight, and 0.3 ~ 1 g/kg can cause death. It is used to make formaldehyde, pesticides and so on. Used as extractant of organic matter and denaturant of alcohol.