passedpawn

Recipes 

__________________
Now there's some take delight in the carriages a rolling
and others take delight in the hurling and the bowling
but I take delight in the juice of the barley
and courting pretty fair maids in the morning bright and early

Greenbasterd

Recipes 

becks comes in green bottles and its the skunkiest beer i've ever drank. but it also comes in open top 6packs.. stella comes in green bottles but they use a totally inclosed box. they dont even punch out the hand holes, int he factory at least w/e happens after that is not there fault.

solbes

Recipes 

Referring to Passedpawn's chart, it's the lower wavelength light that skunks a beer correct? Trying to confirm why the brown bottles would offer more protection based on wavelength. Obviously they block more light than a clear or green bottle as well.

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Primary #1: Empty #2: Empty
Secondary #1: Belgian Golden Strong #2: Dark Belgian Strong #3: Empty #4: Framboise Lambic
Kegged: RedHook ESB clone, Fat Tire Amber
Bottles: Surly Furious clone, Kicked by a Moose Scotch Ale, Apfelwein, Russian Imperial Stout, Trappist Dubbel, Carmelite Tripel
On Deck: Kölsch IV, Altbier II

ajbram

Recipes 

It's UV light that skunks a beer. That's in the 400nm and below range. From Passedpawn's chart, you can see that brown does a much better job at blocking UV. When you think about it, think of the color light you see passing through a bottle and compare it to this image. Brown is close to red and orange... and not close to blue and UV. The farther the light color is that the bottle lets through from the UV part of the spectrum, the better the bottle will be at keeping your beers tasty. That being said, if you put it in a closed box in a dark place, bottle color makes no difference.

__________________
Back off man! I'm a Scientist.
On Deck:
Primaries: Invincible Double IPA, Agave Lime Wheat
Secondaries:
Bottled: Orange Vanilla Cinnamon Mead, Gentle Giant English Mild.
Kegged: Blackstrap Molasses Porter

Ted_Pino

Recipes 

I have heard that most transparent glass blocks a lot of UVA and UVB but still allows the visible spectrum to pass through. If glass is thick enough, it can pretty much absorb UV light completely, that's why Corona bottles are thicker (they weigh about 22 grams more than a stander brown bottle). What is also skunking the beer is any blue or high energy light that can get through the glass. If you think about it, when you see a blue bottle what is happening is the glass is absorbing every other wavelength EXCEPT blue and that is what makes it that color. Also, as said before, High Life and others use a modified alpha acid extract that doesn't change into the skunk chemical when exposed to light.

NA_Wreckdiver

Recipes 

Is the "High Life" in "Miller High Life" supposed to mean "long lasting"...
presumably due to their "Hop" method?

aristurtle

Recipes 

Miller High Life uses a hop extract that contains no isohumulones, so UV light doesn't cause them to turn to thiols, hence no skunk aroma.

passedpawn

Recipes 

I got that graph from this white paper. Lots of great info here.

https://www.dropbox.com/s/gcn9joo7zlmlipw/bbrskunking.pdf

__________________
Now there's some take delight in the carriages a rolling
and others take delight in the hurling and the bowling
but I take delight in the juice of the barley
and courting pretty fair maids in the morning bright and early

rico567

Recipes 

I use brown 9" longnecks, all commercial throwaways, simply because they're so ubiquitous. That being said, in my situation I wouldn't be afraid to use clear or green. My fermentation is done in plastic buckets, which are going to block light (at least the bad UV part) pretty well. Then the bottles sit in my basement, which is completely dark most of the time. When the bottles are brought out of the basement, they go into the fridge until the beer is consumed....so there's not really a whole lot of exposure to light going on. For people who insist on using green or clear bottles, it could be handled in this way.....

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“Malt does more than Milton can / To justify God’s ways to man”

-A. E. Housman (1859–1936). A Shropshire Lad , 1896.

BradleyBrew

Recipes 

i've heard Newcastle employs this same method.