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New methodologies in the stable isotope analysis for cultural heritage.
Lubritto C., Tafury M.A., Soncin S., Farese M., Formichella G., Panella S., Bernardini S., Cocozza C., Di Cicco M., Altieri S., Mantile N.
In the last decades there has been a growing interest about archaeometric researches upon osteoarcheological remains as a source of information to investigate past lifestyles. In particular stable isotope analysis carried out on human archaeological tissues or bone, with the aim of investigating different aspects of human lifeways ($e.g.$, subsistence practices) is nowadays a common procedure in bioarchaeological research. Indeed stable isotope analysis of collagen, the organic component of the bone, allows us to gather a wealth of information ranging from paleo-diet, climate changes, social status, exploitation of local resources, migrations, weaning age, breeding and farming practices of ancient populations. In the present paper we present some recent methodologies introduced in these field such as: i) incremental dentine isotopic methodologies; ii) Bayesian modelling tool; iii) carbon and nitrogen isotope analysis of amino acids (compound-specific isotope analysis of amino acids CSIA-AA). These approaches were tested on sample coming from different sites (Pompeii, Ostia, Herculaneum) to investigate the life of ancient community in some of the central economic hubs of the Roman Empire.