Thursday, August 14th, 2014
Archaeologists have long believed that artificial mummification in Egypt began during the Old Kingdom, around 2,500 B.C. Mummies have been found from the Late Neolithic and Predynastic periods (ca. 4500 – 3100 B.C.), but they were thought to have been naturally mummified in the arid heat of the desert. Evidence for the use of embalming agents was found on one examples from the late Old Kingdom (ca. 2,200 B.C.), only becoming frequent in the Middle Kingdom (ca. 2,000-1,600 BC).
Now the results of an 11-year study are upending the conventional wisdom with chemical analysis of preservative resins found in prehistoric funerary wrappings. Researchers from the Universities of York, Macquarie and Oxford have identified complex embalming agents in linen fragments from some of the earliest tombs in Egypt found in the Neolithic cemeteries at Badari and Mostagedda in Upper Egypt.
Egyptologist Dr. Jana Jones of Sydney’s Macquarie University started the ball rolling in 2002 when she examined 51 wrapping samples excavated from Badari and Mostagedda in the 1930s and preserved in the collection of the Bolton Museum. Viewing them under a microscope revealed the presence of “toffee-like” substance likely to be resin. Researchers from Oxford University radiocarbon dated the samples to confirm they were indeed prehistoric as the archaeological evidence had indicated.
The resinous substances had to be confirmed chemically, however, because the microscopic analysis couldn’t conclusively identify them. That’s where University of York archaeological chemist Dr. Stephen Buckley came in.
Corresponding author on the article, Dr Buckley, used a combination of gas chromatography-mass spectrometry and sequential thermal desorption/pyrolysis to identify a pine resin, an aromatic plant extract, a plant gum/sugar, a natural petroleum source, and a plant oil/animal fat in the funerary wrappings.
Predating the earliest scientific evidence by more than a millennium, these embalming agents constitute complex, processed recipes of the same natural products, in similar proportions, as those employed at the zenith of Pharaonic mummification some 3,000 years later.
Dr Buckley, who designed the experimental research and conducted the chemical analyses, said: “The antibacterial properties of some of these ingredients and the localised soft-tissue preservation that they would have afforded lead us to conclude that these represent the very beginnings of experimentation that would evolve into the mummification practice of the Pharaonic period.”
Dr Buckley added: “Having previously led research on embalming agents employed in mummification during Egypt’s Pharaonic period it was notable that the relative abundances of the constituents are typical of those used in mummification throughout much of ancient Egypt’s 3000 year Pharaonic history. Moreover, these resinous recipes applied to the prehistoric linen wrapped bodies contained antibacterial agents, used in the same proportions employed by the Egyptian embalmers when their skill was at its peak, some 2500-3000 years later.”
This revolutionary discovery underscores the importance of historic specimen collections in museums. They may seem like dust-magnet clutter, but as technology advances they can be an invaluable resource. First the cholera genome was mapped from 19th century specimens in Philadelphia’s Mütter Museum, now the history of Egyptian mummification has been rolled back 1,500 years.