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."
hurray!
weinersmith
I've had a $400 wine before (obtained at a decent price and then aged). The difference between a decent $20-$40 wine and a $400 one is minimal relative to the price.
I doubt anyone without a really refined palate would be able to notice. And even if you did, you would probably chalk it up to poor storage or oxidation or something.
Except for ending slavery, the Nazis, communism, & securing American independence, war has never solved anything.
Considering the limit of C-14 dating is approximately 40,000 years BP, it isn't really all that useful for dating rocks unless you are a young-earth creationist.
95% of carbon datings may be inaccurate, says new wine grower-sponsored study.
This is why I only drink Jolt and 151.
As I understand it, carbon dating doesn't work well for young items. Are vintage wines old enough for accurate carbon dating?
Some days I'm proud to be an Australian.
i'd like to know just how old are some things people in washington have in their heads
Build your own energy sources from scratch. http://otherpower.com/
Why hasn't slashdot implemented a filter that eliminates "first post" asshats? I don't think it would be all that complicated.
now mod me offtopic
The teachers will crack any minute, purple monkey dishwasher.
Ya know, they'd get way more accuracy measuring these fine wines age if they used oxygen depleted gold plated monster cables on their equipment...
Would someone please translate this into English? Oh, and if this was the editor's attempt, I would hate to see the submission!
'The tyrant will always find pretext for his tyranny.' - Aesop's Fables
The summary writer fails basic science. Carbon dating isn't used, and can't be used for dating rocks. Various forms of radiometric dating can be used, but carbon dating? Hell no. In the words of Youtube's creationism debunker Potholer54, "because there's no f-ing carbon in it!".
"The team of researchers think "vintage fraud" is widespread..."
Eh, "think"?
But the headline sounds so certain.
"According to the study, wine experts have estimated that up to 5% of fine wines sold today are not all they are cracked up to be..."
Ah. "estimated". Nowhere do they even mention running the tests in anger. Only proving the tests work when calibrated to known values.
The reporter left it till the end to admit, and /. reports it as an absolute truth. Disingenuous at best.
I was told by an archaelogist associate of mine that carbon dating gives very wild results unless its properly calibrated with something found nearby that can be historically verified. He mentioned that the last time the French tested a nuke in the pacific (?) that messed up calibrations worldwide and they had to redo all their calibation data sets. Carbon-14 dating isn't all its cracked up to be.
5% of wines? More like at least 5% of anything you can get.
Take any market, and you'll have, at the very least, 5% of fraudulent products. Off course, it's bigger in some other markets, but I'm pretty sure it's at least 5%.
This would be news if we got a way higher number. 5% sounds average to me. ;)
Or, at least it's average compared to other markets like religion, where 100% of the offered 'goods' are fake
WTF am I doing replying to an AC at 5 A.M on a Friday night?
It's always more interesting when there are multiple viewpoints on an issue, and I'm happy to take the contrary one. I've tasted 2 buck Chuck (quite good), and tasted $100-$1000 dollar bottles. There is actually a difference that's discernable by I'd guess at least 40% of wine drinkers, and while I'm open to the idea that we can replicate some of the properties of the top wines cheaply, and that certain top wines are counterfeited, I still posit that the top, expensive wines are an experience that are worth paying for, at least once or twice in one's life. To test, I'd recommend splitting among a few friends an Opus One from Costco for around $100, which can be 40% of the retail price. It's consistently a top wine and will enlighten you if you're in that sad, obsessive, minority of folks who care enough to spend crazy money on good wines :)
From TFA:
The researchers think carbon-dating fine wines could help nip in the bud the growing practice of vintage fraud.
According to the study, wine experts have estimated that up to 5% of fine wines sold today are not all they are cracked up to be on the label or in the price tag.
Nothing about the researchers estimating that 5%: that's made up by the "wine experts". (They should know.)
According to the study, wine experts have estimated that up to 5% of fine wines sold today are not all they are cracked up to be on the label or in the price tag
The carbon dating didn't find 5% of wines are frauds. A bunch of "wine experts" they talked to said it.
Also, it's not based off the age of the carbon in the wine; it's based off the percentage of radioactive carbon from nuclear tests. Unless they have a precise idea of exactly how much radioactive carbon ended up where after each test, the whole thing is a load of crap.
Please help metamoderate.
Certain vintages (same grapestock, same vineyard, same winemaster) vary in perceived taste and value from year to year, depending on weather, harvest time, sugar content, etc. 1999 may be great, 2000 shoddy. Is C-14 dating accurate to within one year? Hmm...
You must be referring to Monster Wine. Uh oh......
You cannot be sure what century an object is from with Carbon-14 dating let alone the year so it is useless for wines. This is without factoring in the possibility of cosmic rays speeding up the decay to make it appear older than it actually is.
Jesus was a compassionate social conservative who called individuals to sin no more.
The folks dating wines use several other isotopes, too. Also, I don't think in this instance they're looking to date to specific years so much as prove that because of the range a particular vintage shows in testing, it can't possibly come from a particular year.
Even if I might not be able to give you an exact year it is, but I can easily prove a whole bunch of years that it isn't. If a bottle says it's from the court of Louis XIV, but the analysis shows it's from the 1920s, that's a big deal.
Also, we have excellent records of weather conditions going back centuries from many of the wineries. So, once you combine the analysis from the isotopes with what we already know about the wine in question, we can hazard a pretty good guess to the exact year. It's very possible that a particular wine could only have come from a single year during the range we have established for it.
And I'm sure some geek will add Bayesian error fixes to it after reading the article.
I scream. You scream. I assume that means we're both acquainted with the problem. We proceed.
Today almost everything is adulterated - from Spanish and Greek olive oil (which is often either not virgin (cold-pressed) or not even olive), to milk and everything in between. Think that "100% pure Mysore Sandalwood" is actually from Mysore, or 100% pure - or even Sandalwood? Considering that Mysore Sandalwood has been illegal to harvest fr a number of years... and that Sandalwood is one of the most often adulterated essential oils... and that the great majority of people could not distinguish a 100% from a 5% essential oil, the answer is a resounding no.
Worst adulteration, as far as I know, is adding lead chromate to curry and turmeric, to improve the color: lead is deadly for your braincells, and hexavalent chromium is carcinogenic. Bon apetit!
"The agriculture ministry is not in charge of Gundam" - Japanese ministry official.
That story doesn't leave much to go on, it's pretty low information content. However, it should be noted that a vintage wine can contain up to 15% of its grapes from another year. That would obviously skew any carbon dating results.
1. Don't chew gum while tasting wine.
2. Delicate grapes on a vine can be a metaphor for your life / personality, or something.
3. If anyone orders Merlot, leave.
There are alternate radiocarbon techniques that are much more accurate. Nuclear weapons testing resulted in a big spike in atmospheric carbon-14 levels globally, which is dropping rapidly since the test ban treaty. Biologists have been using these techniques for determining cell ages for a couple years.
More info can be found here
upon the advice of my lawyer, i have no sig at this time
So has Monty Python, and it's probably still in the top 10 references on slashdot...
Or, since you HAVE read /. for a while, you could read the article. Which describes the measurement of increased C14 levels due to atmospheric fallout after detonation of nuclear weapons, and their subsequent reduction (dilution) due to fossil fuel burning, which in their testing was enough to narrow down to a specific year.
You mean 5% of Two Buck Chuck is actually vintage wine? How can we tell the vintage from the cheap crap we actually paid for? I've been lucky so far and haven't got stuck with one of those vintage bottles.
No seriously, who is selling counterfeit cars in the US?
http://lkml.org/lkml/2005/8/20/95
It was in reruns, at least when I was a kid. I can't say that I remember any of it though. :)
some shows stick with us though, but some more my speed and still haunt my dreams. :)
Serious? Seriousness is well above my pay grade.
In London, I heard a standard rule of thumb that it costs about £100 to get an enjoyable bottle of wine. This breaks down as about £10 for the bottle you actually enjoy, and the remaining £90 for the nine other bottles you bought. Really, there are a lot of nice wines in the £10 price bracket, but they are surrounded by many less nice ones, and it's a matter of taste as to which ones are nicest.
Those who can make you believe absurdities can make you commit atrocities. - Voltaire
Do they open the old bottles and waste the wine, or do they wait under the table until someone drinks a vintage bottle? Also 5% with how much certainty, they really need to give some values or link to a data source. What range of C-12/C14 ratios are there over the past century?
www.RacquetUp.org - Helping Detroit Youth
have they used reference wines which they know to be authentic, by which to judge the accuracy of the carbon dating results? maybe this is a last dash attempt at making their article have some appeal to the general public. i expect carbon 14 dating experts must have it tough finding jobs in Australia, maybe they are hoping wine collectors will hire them to authneticate their collections...maybe they can do stamp collections as well.
The Australian researcher quoted in the story was co-author of a paper involving forensic use of C-14 dating of wines published in 2004:
U. Zoppi, Z. Skopec, J. Skopec, G. Jones, D. Fink, Q. Hua, G. Jacobsen, C. Tuniz, A. Williams, Forensic applications of 14C bomb-pulse dating, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volumes 223-224, Proceedings of the Ninth International Conference on Accelerator Mass Spectrometry, August 2004, Pages 770-775, ISSN 0168-583X, DOI: 10.1016/j.nimb.2004.04.143.
(http://www.sciencedirect.com/science/article/B6TJN-4CDWMNK-F/2/b2a003d44396872bd06d5c80443167cd)
and I'm nearly certain I saw published research in the 1990s using C-14 dating to establish wine adulteration, but as it's 3:40 in the morning insomniac me is not going to run down the reference
You think you can taste the difference.
A lot of your enjoyment of "expensive goods" is psychological. So your "tasting a difference" may simply be a variation on wishful thinking. Have you tried a double-blind test?
Of course, you may still say you "enjoy" expensive wines more if you're counting the whole experience (self-deception included) and that's your prerogative.
I'm not at all a wine person, but it's great to know a safe bet. Lately, I'd recommend Yellow Tail Merlot from Australia. Around $12 in North America.
I still remember the Carol Burnett Show "Went with the Wind" parody of Gone with the Wind, which I found hilariously funny as a kid even though I've never seen the original movie. I remember enjoying the TV show, I think a lot of it had to do with the impression that the cast often gave that they were just microns away from cracking up and causing an out-take.
And I see a certain parallel between the skit that Antique Geekmeister cited and the ending joke to the "Summarize Proust" Monty Python skit (of course, MP has taken the joke to an even greater extreme).
They add to the discussion by keeping goatse and tubgirl from being f1rst ps0t.
So has Monty Python, and it's probably still in the top 10 references on slashdot...
No it isn't
Your own experience is subjective. I've seen blind tests where professional wine testers were unable to taste the difference between white wine with red food coloring, and actual red wine. In another test, experts rated cheap wine highly, and expensive wine poorly when the labels were exchanged. Even the background colors influence how wine is evaluated. As far as I can tell, it's all bullshit.
OK, The article states nothing about detecting frauds with carbon dating. It only states that they tested carbon dating with several whines and came up with good corresponding dates.
The article then describes that according to experts 5% of wines are frauds, but this has nothing to do with the tests.
...anyway.
Mit der Dummheit kämpfen Götter selbst vergebens
Yes it is
Carbon dating isn't all used for such academic pursuits as trying to determine the age of the Shroud of Turin, or figure out how old some rocks are
From the article about rocks, however:
They sent samples for chemical analysis to scientists at the Carnegie Institution of Washington, who dated the rocks by measuring isotopes of the rare earth elements neodymium and samarium, which decay over time at a known rate.
Why do I care about such an almost trivial inaccuracy? Well, because this kind of misunderstanding finds its way into things like the attacks on evolution by the religious fringe, or the attacks on climate science by the energy industry, where it abused to "prove" just about anything.
...
Dispose of the rest thoughtfully, while enjoying a beer. Aged for 1 hour to cool down.
The difference between wine and beer is that nobody is going to suggest that the real way to enjoy a fine beer is to spit it out.
What is this, Logan's Run? Just because something is over 30 doesn't mean it's not relevant.
Can you be Even More Awesome?!
Ah yes, you want room 12A, Just along the corridor ...
Next you'll tell me Monster cables aren't worth it!
These posts express my own personal views, not those of my employer
I've had a $400 wine before (obtained at a decent price and then aged). The difference between a decent $20-$40 wine and a $400 one is minimal relative to the price.
I doubt anyone without a really refined palate would be able to notice. And even if you did, you would probably chalk it up to poor storage or oxidation or something.
Is it just me? I can tell the difference between types of beers, but all wines taste like mouthwash to me.
If Slashdot were chemistry it would look like this:Cadaverine
The filter already exists. And it seems to be working quite well right now.
if you're going with the addams family, why in god's name didn't you go with Christina Ricci ;)
When I read the article I came up with over a dozen questions, none of which were adequately explained. Thus:
Other sources of carbon in the batch- You've got oak, the toasting process, blending of different types of oak/wines, reuse of barrels, different toasted barrels, different types of oak in the barrel, the possibility of a really old oak barrel (neutral) used for fermentation and combination of items such as StaVin's Oak Cubes or Oak Staves, (two different sources of carbon)...
Oak is aged anywhere from 2-3 years before toasting. Toasted oak could be years different than what the year of the vintage is. Oak Trees are significant sources of variability. (Toasting oak releases sugars and flavours into the wine).
Chaptalization is another source- sometimes wines are started with diluted or various mixes of sugar and water to strengthen the yeast growth. You have a grape must that is a little low in sugar- so add more sugar. Where did it come from? Who knows. Probably not beet sugar, if you know what I mean.
Say you have a stuck fermentation- you take some wine out, dilute it, add more sugar, wine, repeat- eventually bringing up the level until the yeast are strong enough to take back over.
Finally, you have blends. To the best of my knowledge a blended wine doesn't have to state the year or can state the year of the major component - depending on the laws of the region.
All in all... not the best article.
Someone ?
What rocks can one date via C14 ?
-- kjh ( ?? perhaps recent corals ?? )
Playboy conducted a taste test of the top 10 tasting wines in the world: Here are the top Two:
2 - Chateu Latour
and drum roll please!!!!
__________________________________________________
1 - A bucket of Horse piss
Stupidity only gets you so far, then you've gotta try
Wine tastes pretty bad anyway. Who cares how aged it is.
Bloody git.
Cynical Idealist
http://www.decanter.com/news/93359.html
http://www.newluxuryitems.com/top-10-most-expensive-wines-in-the-world.html
People paying 6-figure dollar amounts for a bottle of wine are not buying a quality beverage. They are buying an rare antique. The bottles themselves are filled with vinegar at best. Of course fraud is rampant. Rich people are buying otherwise worthless objects with a cute story behind them.
ahref=http://en.wikipedia.org/wiki/Carbon_datingrel=url2html-21275http://en.wikipedia.org/wiki/Carbon_dating> only works for things up to ~50,000 years old, so it wasn't used for those old rocks. For things older than ~100,000 years folks use ahref=http://en.wikipedia.org/wiki/Potassium-argon_datingrel=url2html-21275http://en.wikipedia.org/wiki/Potassium-argon_dating>. The applicable time period is based on the half-life of the isotope. Carbon-14 has a half-life of 5730 years while Potassium-40's is 1.248e9 years.
Best outtake ever http://www.youtube.com/watch?v=3qqE_WmagjY
Good article links, thanks, wish I had mod points.
Actually, the comparisons to the audiophile market are not too far off the mark. You don't have to be a wine connoisseur to recognize that making a fine wine is a combination of art and science. Anyone can tell that each wine has distinctive qualities. How much a person appreciates the rarity of a particular wine will dictate what they are willing to pay for it. But for every person with a refined enough palate to appreciate an expensive wine, the are dozens who will pay the same money and say they can taste all of the subtleties and even convince themselves that they can, even if they really can't. Much like in the audiophile market the number of people of people who can actually hear the difference in high end equipment is much smaller than they number who have convinced themselves that they can. Ironically, it is often the younger set who are desperate to establish themselves who fall into the latter category and spend far too much on high end audio equipment and/or wine than they should. It is only when they are older that they recognize the folly of their youth.
Great. My 2009 Yellow Tail Shiraz is actually 2010.
"Missus-a-Whiggins!" Harvey could never keep a straight face on those skits. :)
You forgot
4. If someone says they love the movie Sideways, leave.
Just blend your modern wine with industrial alcohol made from fossil fuels? Presumably you could obtain the correct amount of carbon-14 this way? The only way this *might* be detectable is from C12/C13 ratios...
4. Always order Merlot. Everyone else leaves, more wine for you!
"This post contains words, known to the State of California to cause thought. Wash brain thoroughly after reading."
It's only valid for a certain subset of organic matter.
Interestingly enough, you can't use it for fish bones, and it is wildly inaccurate to date land animals who eat a lot of fish.
LedgerSMB: Open source Accounting/ERP
I'm not going to be the one that says a little girl was hot. :)
Ok, when the first movie came out that she was in, she vaguely age appropriate for me. I liked the darkness of her character, even if she was 11. Now, saying it about her in that movie would make me a pervert. Funny how society works. The same could be said for Lydia Deetz, or Queen Amidala.
But to that end, sometimes you just can't argue. :)
Serious? Seriousness is well above my pay grade.
A lot of coal deposits show false readings with C14-dating (mistakenly putting the age within the expected area for C14 dating accuracy). The problem isn't just that it's old. The issue is that alpha decay of trace radioactive minerals around the coal can produce C14, so the proportions get all messed up.
Interestingly the exact opposite problem occurs trying to date bones of people who ate a lot of fish. Since C14 is produced in the upper atmosphere and absorbed by land plants, marine life tends to have lower quantities of it. If you eat a lot of fish, and you are murdered, and someone tries to C14 date your bones, they might conclude you had been dead for several hundred years......
LedgerSMB: Open source Accounting/ERP
I'm not going to be the one that says a little girl was hot. :)
I meant Christina Ricci now, not then :-)
Yeah, yeah, and Uruguay is the country closest to heaven.
All I've got to say on the subject is that any wine that I feel is worth drinking, an expert usually tells me is crap...
Unless they don't know the price beforehand.
Wine tasters are like art critics. They rarely can tell if it's a chimp or a human doing the painting if not told beforehand. Many people who claim to tell the difference in the quality of wines rarely do it on a blind taste test.
The dating of old rocks cited as an example in the post is not an example of carbon-dating. Carbon dating only goes back about 50K years, nowhere near 4 billion. Those old rocks were dated on the basis of their content of isotopes of certain rare earths which decay much more slowly than Carbon-14.