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Old 01-20-2013, 04:52 AM   #11
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Hop acids kill certain types of bacteria, though certainly not all of them. The kilning process of hop pellet manufacturing will probably kill a lot of microbes. The alcohol present in fermented beer will kill a lot more bacteria than hops will. Fermented beer is also acidic and largely devoid of fermentable sugars, so it's hard to infect by much other than acetobacter (which needs oxygen), brettanomyces and a few other fungi that can eat dextrins.

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Old 01-20-2013, 05:03 AM   #12
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My understanding is that the properties of hops (oils etc) and beer (alchohol, low pH, low/no free oxygen) do not kill bacteria so much as inhibit their growth and reproduction.

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Old 01-22-2013, 09:37 PM   #13
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Well, I (unintentionally) sanitized 2 ounces of lovely, fragrant 2012 Centennial last night while making a Two-Hearted Clone. Had just run sanitizer through the keg, forgot that I had about a quart left in the bottom of the keg. Popped the lid and dropped my sanitized paint strainer bag full of hops in without looking, closed back up. Realized there was an issue about 5 minutes later when I went to pick up the "empty" keg to fill up, and got way too much sloshing about. Dumped the dry-hopped Star-san into another bucket, and it came out a nice golden color with a lovely aroma. I kind of wanted to cry a little bit. Moral of the story = Star-san and Centennial do not mix. I have done 7 batches thus far where I have dry hopped, and aside from giving the hop package a good shot of Star-san from the spray bottle and soaking the hop bag in Star-san, I haven't worried about it and (thus far) have had no problems.
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Old 01-23-2013, 09:52 PM   #14
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I don't bother, You could drive yourself nuts trying to come up with ways to sanitze Dry hop additions. My feelings are that if your doing it right, your dumping them into an alcohol rich enviroment..... I also don't use a hop bag either, after all it all settles to the bottom eventually. Just dont siphon that layer, or use your dump valve if a conical
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Old 01-23-2013, 11:07 PM   #15
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Originally Posted by SudsyPaul View Post
I'm yet to make anything that requires dry-hopping, but from what I've read, you can just soak them in vodka before tossing them in.
where did you read this? there would be no point in adding hops to a beer that have already been soaked in vodka since the hop oils are soluble in alcohol. the long and the short of it is that hops DO NOT need to be sanitized before dry hopping.

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