4
votes
Accepted
Should a yeast starter be kept in the dark?
According to Beer Advocate,
This is when the beer has been exposed to ultraviolet light for a period of time. Hop-derived molecules, called isohumulones, are basically ripped apart.
So unless you'...
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how does light affects yeasts
While that paper is interesting. I think it applies more for ethanol production as a fuel rather than beer.
While light can effect yeast In good and bad ways, In general light is bad for beer.
This ...
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3
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Accepted
Possible to de-oxygenate and de-skunk a beer?
I think that's sort of like reversing a piece of wood in a fire being burnt. The beer has gone through chemical changes- it's nontrivial to reverse them.
I'm not aware of any commercial or home-scale ...
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Should a yeast starter be kept in the dark?
Really depends if you use hops or not. I always put a few pellets in for thier antimictobial properties.
And it depends when and how you pitch your starters.
Light + hops would be bad If your ...
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2
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how does light affects yeasts
While light might have a slight effect on cell growth, the question is whether or not it's worth the hassle. Keeping in mind that if this were a good idea, commercial breweries would have adopted the ...
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Possible to de-oxygenate and de-skunk a beer?
Cardboard flavours are not the result of oxygenation but of oxidation. Oxygen has chemically bonded to chemical compounds in the beer and permanently changed them. While this process should reversible ...
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how does light affects yeasts
It may be a good idea to use red light in your yeast starters when you have the most cell growth. Using it in primary may over populate your batch by diverting glucose that would have gone to EtOH ...
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How much effect does light have on fermenting beer?
UV wavelengths do not penetrate glass. It is more likely that visible wavelengths catalyze photodegrading reactions of the dissolved organic carbon, the stuff leaching out of the hops included.
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