First archaeological identification of nixtamalized maize, from two pit latrines at the ancient Maya site of San Bartolo, Guatemala
2022
Santini, Lauren M. | Weber, Sadie L. | Marston, John M. | Runggaldier, Astrid
This article presents the first direct archaeological evidence of nixtamalization, a chemical process that improves the nutritional value of maize, among the ancient Maya people of Guatemala. Analysis of microbotanical remains recovered from two chultunes, pits cut into bedrock, in a Late and Terminal Classic period residential group at the site of San Bartolo, Petén, Guatemala, provides the first archaeological recovery of maize starch spherulites, a unique byproduct of nixtamalization, and thus the earliest direct evidence of nixtamalization in the archaeological record. The presence of helminth eggs within the same contexts indicates that, at some point in their use life, the pits were used as latrines and as middens for the disposal of domestic refuse, likely including nejayote, wastewater from nixtamalization. These findings shed light on the daily lives of ancient Maya commoners and inform discussions of subsistence and waste management in Maya cities.
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