Asos21 wrote: ↑Tue Dec 21, 2021 9:29 am… As a side question not related to this discussion, how is methanol actually removed from a wash if it doesn't come out in the foreshots?
It isn’t! It is found throughout the distillate output. It forms an azeotropic bond with ethanol and as such, can’t be separated. Fortunately for you, your liver will metabolize the methanol along with the ethanol.
Asos21 wrote: ↑Tue Dec 21, 2021 9:29 am… Though regarding this discussion it still leaves a lot not answered.
What exactly are these compounds produced during high alcohol sugar washes? … And the major question that I have is how much more of these toxic bi products are made from a 20% sugar wash compared to a normal sugar wash?
Congeners are produced in the fermentation process and “stressed yeast” produces more of them as well as different proportions of several possible constituents. The congeners are responsible for “skull cracker”, or the notorious moonshine hangover.
If you break down alcohol into smaller compounds, you’d have mostly ethyl alcohol. But further still are compounds researchers call
congeners. Researchers think these compounds may have something to do with “why you get a hangover”.
What are congeners?
A spirits manufacturer
produces congeners during the fermentation or distillation process. During this process, a spirits producer will convert sugars into alcohol using different strains of yeasts. The yeasts convert amino acids naturally present in the sugars to ethyl alcohol, also known as ethanol.
But
ethanol isn’t the only byproduct of the fermentation process. Congeners are there, too. The amount of congeners the manufacturer produces can depend upon the original sugar, or carbohydrate, sources used to make alcohol. Examples include cereal grains for beer or grapes for wine, or even processed cane sugar for classic “moonshine”.
Researchers currently think congeners can give beverages a certain taste and flavor. Some manufacturers even test for the amount of congeners to make sure their product has a consistent taste profile.
Examples of congeners the distillation process makes include:
-
acids
-
alcohols, such as isobutylene alcohol, which smells sweet
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aldehydes, such as acetaldehyde, which often has a fruity smell present in bourbons and rums
-
esters
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ketones, acetone is common
-
fusels, lower volatile products and found in the “tails”.
The amount of congeners present in alcohol can vary. As a general rule, the more distilled a spirit is, the lower the congeners, because of “heads & tails removal”. This is why some people may find that “top shelf” liquors that are highly distilled don’t give them a hangover as much as a lower-priced alternative.
Role in hangovers
Research suggests congener content may play a role in the occurrence of a hangover, but it probably isn’t the only factor. According to an article in the journal
Alcohol and Alcoholism, drinking alcoholic beverages that have more congeners usually causes a worse hangover than drinks with fewer congeners.
Doctors still don’t have all the answers when it comes to hangovers, including why they occur in some people and not others. They don’t have all the answers for congeners and alcohol consumption, either. One of the current theories about alcohol and congeners related to hangovers is that the body has to break down congeners. Sometimes breaking down congeners competes with breaking down ethanol in the body. As a result, alcohol and its byproducts may linger for longer in the body, contributing to hangover symptoms.
In addition, congeners may stimulate the body to release stress hormones, such as norepinephrine and epinephrine. These can cause inflammatory responses in the body that lead to fatigue and other hangover symptoms.
Alcohol chart with congeners
Scientists have found lots of different congeners in alcohol. They haven’t connected one specific one with causing a hangover, just that their increased presence may worsen one. According to an article in the journal
Alcohol and Alcoholism, the following are drinks in order from most to least congeners:
-
High congeners: brandy, red wine, rum
-
Medium congeners: whiskey, white wine, gin
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Low congeners: vodka, beer, ethanol (like vodka) diluted in orange juice
Scientists have also tested alcohol for the amount of individual congeners. For example, a 2013 article reports
brandy has as much as
4,766 milligrams per liter of methanol, while
beer has
27 milligrams per liter.
Rum has as much as
3,633 milligrams per liter of the congener 1-propanol, while
vodka has anywhere from
none to 102 milligrams per liter. This supports the concept that vodka is a low congener drink. According to a 2010 study, vodka is a beverage that contains some of the least congeners of any drink. Mixing it with orange juice also helps neutralize some of the congeners present.
Another 2010 study
Trusted Source, asked participants to consume either bourbon, vodka, or a placebo in similar amounts. The participants were then asked questions about their hangover, if they said they had a hangover. The researchers found that participants had a more severe hangover
after consuming bourbon, which has a higher amount of congeners, compared to vodka. They concluded that increased presence of congeners contributed to hangover severity.
The bottom line
Researchers have linked congeners with worse hangovers. Current theories are that congeners affect the body’s abilities to break down ethanol as fast and trigger stress responses in the body. Since alcohol contributes to cell dehydration, drink plenty of water before and during the consumption of alcohol. Also, B-vitamins aid the body to metabolize alcohol as well, especially when adequately hydrated. The next time you have a night of drinking, you could try drinking a low congener spirit and see if you feel better than usual the next morning.
“happy yeast won’t shit in your fermenter”. So, make a good ferment and the product will be better (provided you make good, conservative cuts).
ss