The news stories that I have seen say that it contains a dye that reacts with oxygen to turn dark. Being a home brewer, I have a 5 pound tank of CO2. I spray a little gas into wine bottles to preserve the flavor. Since it is heavier than air, it forms a nice protective blanket.
That works fine in a glass bottle, but most plastic bags are made of polyethylene and pass oxygen through like a sieve. I have some bags that hops came in that are "oxygen barrier bags." They look like the bags that disk drives come in (dark aluminum coating), but they are different. Electronics bags block moisture, but they might block oxygen, too.
I guess I could use an empty beer keg. Just lay them in the bottom and purge the air out. I can see it now, when I have guests over to watch a movie and I have to say, "Wait a minute while I bleed the pressure off."
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That works fine in a glass bottle, but most plastic bags are made of polyethylene and pass oxygen through like a sieve. I have some bags that hops came in that are "oxygen barrier bags." They look like the bags that disk drives come in (dark aluminum coating), but they are different. Electronics bags block moisture, but they might block oxygen, too.
I guess I could use an empty beer keg. Just lay them in the bottom and purge the air out. I can see it now, when I have guests over to watch a movie and I have to say, "Wait a minute while I bleed the pressure off."