In addition to the discovery of dye, microchemical tests - which use tiny quantities of materials - provided a way to date the shroud.
These tests revealed the presence of a chemical called vanillin in the radiocarbon sample and in the Holland cloth, but not the rest of the shroud.
A numismatic analysis performed on Byzantine gold coins confirms this result.This book is, therefore, very important with respect to the Turin Shroud.The new examination dates the shroud to between 300 BC and 400 AD, which would put it in the era of Christ.It determined that the earlier results may have been skewed by contamination from fibers used to repair the cloth when it was damaged by fire in the Middle Ages, the British newspaper reported."[The radiocarbon sample] has obvious painting medium, a dye and a mordant that doesn't show anywhere else," Mr Rogers explained.
"This stuff was manipulated - it was coloured on purpose." In the study, he analysed and compared the sample used in the 1988 tests with other samples from the famous cloth.The 4m-long linen sheet was damaged in several fires since its existence was first recorded in France in 1357, including a church blaze in 1532.It is said to have been restored by nuns who patched the holes and stitched the shroud to a reinforcing material known as the Holland cloth.The truth is that there is no known way to reproduce the image.The old article notes that there is also no surefire way to prove it bears the image of Christ, but it could.The shroud, which bears the faint image of a blood-covered man, is believed by some to be Christ's burial cloth.