The 4000-year-old teeth reveal the oldest humans-hidden in the plaque

However, the teeth without staining may not mean that people did not chew the coffee. Now, using a new method, an international team of researchers examined the old dental plate from Thailand from the Bronze Age and found evidence of chewing the Being.

The author of the first author of the book “The For” said Borders in environmental archeology The study of Dr. Piyawit Moonkham, an anthropologist at Xiang Mai University in Thailand. “This is the closest proof of direct vital molecules to use cupping walnuts in Southeast Asia.”

“We prove that the calculus calculation and dental integration can maintain chemical signatures to use psychological plants for thousands of years, even when traditional archaeological evidence is completely absent,” added Dr. Shannon Tosingham, the main author, the Assistant Coordinator of Anthropology at the California Academy of Science. “In essence, we have developed a way to make an invisible visual – reveals the behaviors and practices that have been lost for 4000 years.”

Hidden

In Nong Ratchawat, an archaeological site in central Thailand dating back to the Bronze Age, 156 human burial has been discovered since 2003. For the current study, the team collected 36 samples of the calculus calculation and dental integration of six individuals.

Again in the laboratory, they removed small amounts of plaque from the chemical samples and residue in it underwent analysis. The team also used liquid samples of Tanbul that it produced to ensure the discovery of psychological effects discovery reliably by analyzing them and understanding the complex biochemical reactions between the components. “We have used dried coffin walnuts, pink limestone paste, beard bell leaves, sometimes the barking of Senegaleya Katico and tobacco. We establish the ingredients with human saliva to repeat authentic chewing conditions.” Sources of reproductive materials and nuts experimentally to create original Quid samples were an interesting and interesting process.

The results showed that three archaeological samples – all of Molly from the same individual, burial 11 – contains the effects of Ericcoline and Arkidan. These organic compounds, found in genital nuts, as well as plants such as coffee, tea and tobacco, have physiological effects on humans. This indicates that the genital nuts have been chewed early in 4000 years in Thailand.

“Irorious archaeological aspect” guide

“The presence of walnut compounds in the calculus calculus indicates frequent consumption, as these waste is combined into the mineral plaque deposits over time through regular exposure,” explained Tushingham. Accordingly, the absence of teeth staining raises questions. The team indicated that this may be the result of different methods of consumption. This may also be due to dental cleaning practices after consumption, or post -death operations that affect the maintenance of stains over 4000 years.

While the effects of chewing walnuts were found in samples of only one individual, there is currently no evidence that burial 11 received a special treatment or had a high social condition or unique ritual importance compared to the other burial in Nong Ratchawaat. However, the presence of stone beads as dangerous goods can provide hints regarding the identity of the individual or the experience of the living. The team said that studying more individuals in Nong Ratchawat and other local sites to learn when and for those who have been given these dangerous goods can provide valuable evidence.

They said that the methods that researchers can apply can be used to check the remaining burial in Nong Rachews and in other locations. Tosingham said: “The analysis of differential dental calculations can reveal behaviors that do not leave any traditional archaeological effects, which may revolutionize our understanding of ancient life and human plant relationships,” Touchingham said. “It can open new windows in the deep history of human cultural practices.”

“Understanding the cultural context of the use of traditional plants is a larger topic that we want to amplify – plants with psychiatric, medicinal and festive effect as drugs are often rejected as drugs, but it represents thousands of years of cultural knowledge, spiritual practice, and the identity of society,” Monckham concluded. “Archaeological evidence can inform contemporary discussions by honoring the deep cultural heritage behind these practices.”