Carbon-14 Dating Reveals 5% of Vintage Wines May Be Frauds

Carbon dating isn't used only for such academic pursuits as trying to determine the age of the Shroud of Turin, or figure out how old some rocks are. An anonymous reader writes "Up to 5% of fine wines are not from the year the label indicates, according to Australian researchers who have carbon-dated some top dollar wines."

Comments

Re:Old Enough?

[rnaiguy]

There is a trick that can be used to date things from the 2nd half of the 20th century. Nuclear bomb testing caused a spike in atmospheric C14, which is rapidly decreasing as it equilibrates with the oceans (among other things). The actual radioactive decay is insignificant on this timescale, and so we can get a pretty good idea if the grapes used to make the wine were plucked after nuclear testing began, and if so what year they were harvested. This technique has also been used in biology to date the "birth" of cells in human tissues.

Re:Old Enough?

[rnaiguy]

No, I'm thinking of C14. Which is produced when all the excess neutrons from a nuclear blast smash into atmospheric nitrogen: http://en.wikipedia.org/wiki/Carbon-14

here's the biology reference: http://www.pnas.org/content/103/33/12564.long

these guys pioneered the tech for use in biology, but then it was popularly applied to wines.

Re:Let me take a pro-expensive wine position

[GNUALMAFUERTE]

I'm from Argentina. We produce some of the finest wines in the world, specially in Mendoza.
t,
Here, a cheap, average wine that most people drink at home with dinner retails at ~$9 (That is, 9 pesos, or 2.3 Dollars.)

A relatively good wine retails ~$20 (5.2 dollars). At $150 (39 dollars), you can get one of the finest wines you'll ever taste.

The funny thing is, while traveling to the USA, I've recognized bottles that Retail here for ~$35 (9 dollars), with tags of 250 dollars!

So, leaving that aside, yes, you can definitely tell the difference, but it's not all about money. You can definitely tell the difference between any two wines. But, with wine, price is not always = quality. I've tested $200 wines that I didn't like (like the Lamadrid Gran Reserva Malbec) , and $20 (5 dollars) wines that I loved (Like Benjamin Nieto Cabernet Sauvignon)

So, money plays a big role, but there's not a clear relationship between price and quality. It's more of a threshold ... you won't find really good wines very cheap. But above a certain price, there are good and bad wines at a very ample price range

Re:Dammit

[rgmoore]

"because there's no f-ing carbon in it!".

There are plenty of rocks that contain carbon. Good examples include limestone, marble, coal, and oil shale. The problem isn't lack of carbon. The problem is that the half life of 14C is very short compared to the age of most rocks, so there isn't enough radiocarbon left to date.