Preserving Maple/Birch Sap?

Hey there! I want to try to put up some sap (yes sap not syrup) and I was wondering if anyone has experimented with trying to keep it for more than a couple weeks without it fermenting.  I'm looking for a less energy intensive way to enjoy this incredible gift other than boiling it down to syrup. I'd especially be interested in some type of pasteurization and bottling. Thanks and happy tappin' :)

Good question...  I've heard of it for sale so it must be preservable.  My hunch is that it's just water with some sugars and other plant juice mixed in so it should be pretty clean straight out of the tap.  I'd guess (that's just a guess) that if you boil it for a couple minutes and then seal it up in a hot, sterile mason jar that it probably would keep for a while.