World's earliest evidence of wine-making found in Georgia
Scientific analysis of 8,000-year-old pottery jars unearthed in Georgia offers the world's earliest evidence of grape wine-making, dating the tradition almost 1,000 years earlier than previously thought, researchers said Monday.
Before, the oldest known chemical evidence of wine in the Near East dated to 5,400-5,000 BC (about 7,000 years ago) and was from the Zagros Mountains of Iran, said the report in the Proceedings of the National Academy of Sciences, a peer-reviewed US journal.
The world's very first wine is thought to have been made from rice in China around 9,000 years ago, followed by the grape-based alcohol in Iran.
We believe this is the oldest example of the domestication of a wild-growing Eurasian grapevine solely for the production of wine, said co-author Stephen Batiuk, a senior research associate at the University of Toronto.
Scientists on the team came from the United States, Canada, Denmark, France, Italy, Israel and Georgia. They have been working for the past four years to re-analyze archeological sites that were found decades ago.
The fragments of ceramic casks, some decorated with grape motifs, were found at two archeological sites called Gadachrili Gora and Shulaveris Gora, about 30 miles (50 kilometers) south of the Georgian capital Tbilisi.
Scientists used new methods to analyze the residue preserved inside -- specifically, an exacting chemical technique known as tandem liquid chromatography-mass spectrometry-mass spectrometry, or LC-MS-MS.
This chemical analysis confirmed tartaric acid, the fingerprint compound for grape and wine, said the PNAS report.
Researchers also found three associated organic acids -- malic, succinic and citric -- in the residue from the eight jars.
This discovery dates the origin of the practice to the Neolithic period around 6,000 BC, pushing it back 600-1,000 years from the previously accepted date, according to the study.
- 'Social lubricant' -
The Neolithic period began around 15,200 BC in parts of the Middle East and ended between 4,500 and 2,000 BC.
During this era, people began farming, domesticating animals, making polished stone tools, crafts and weaving, researchers said.
Pottery, which was ideal for processing, serving and storing fermented beverages, was invented in this period together with many advances in art, technology and cuisine, said Batiuk.
As a medicine, social lubricant, mind-altering substance, and highly-valued commodity, wine became the focus of religious cults, pharmacopeias, cuisines, economics, and society throughout the ancient Near East, he said.
People in Georgia cultivated the Eurasian grapevine, Vitis vinifera, which likely grew abundantly under environmental conditions similar to modern-day France and Italy.
The domestication of the grape apparently led eventually led to the emergence of a wine culture in the region, said Batiuk.
The Eurasian grapevine that now accounts for 99.9 per cent of wine made in the world today, has its roots in Caucasia.
But this might not be the last word, according to lead author Patrick McGovern, scientific director of the biomolecular archeology project for cuisine, fermented beverages, and health at the Penn Museum in Philadelphia.
McGovern, who co-authored the 1996 Nature study that placed the earliest evidence for grape wine in Iran, said the search for the truly oldest artifacts will continue.
Other sites in the South Caucasus in Armenia and Azerbaijan might eventually produce even earlier evidence for viniculture than Georgia, McGovern said.
The Taurus Mountains of eastern Turkey are also a prime candidate for further exploration with its monumental sites at Gobekli Tepe and Nevali Cori at the headwaters of the Tigris River, dating as far back as 9,500 BCE.
(2017/11/14 08:59)Click Here for Japanese Translation
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