GC-MS characterization of carbohydrates in an archaeological use residue: A case study from the Coahuila Desert
A GC-MS method, which involves the formation of diethyldithioacetal trimethylsilyl derivatives of monosaccharides, was employed to characterize carbohydrates in a residue on a stone tool from the Coahuila Desert. The carbohydrate composition of the residue is consistent with the composition of desert food plants such as yucca, sotol, and lechuguilla. Quantitative analysis of carbohydrates in some ethnobotanically relevant standard materials was also performed to precisely understand the origin of the tool residue. The residue’s composition is consistent with processing of a variety of sugar-rich desert food plants.
Link to Published Version
Dhakal, B., & Armitage, R. A. (2013). GC-MS characterization of carbohydrates in an archaeological use residue: A case study from the Coahuila Desert. In Archaeological chemistry VIII (Vol. 1147, pp. 157–170). American Chemical Society. doi:10.1021/bk-2013-1147.ch009