Trade in aromatic resins is recorded in egyptian manuscripts and evidenced in bronze age shipwrecks for example dated to 1400BC
http://en.wikipedia.org/wiki/Uluburun_shipwreck
Besides a precious cargo of tin and copper, and the products of 10 civilisations, the ship contained on this leg of its journey 129 jars of Pistacia (terebinth) resin, an ancient type of turpentine used as a wine preservative.
http://en.wikipedia.org/wiki/Pistacia_terebinthus
Resin, aromatic resinous substance that spills out of a plant, either spontaneously or from a cut; it comprises of a pitch scattered in benzoic or cinnamic harsh corrosive esters and is utilized mostly within medicinal preparations.
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