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Chungará (Arica) - Revista de Antropología Chilena
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TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT

Authors: Wilson, Andrew S.; Dixon, Ronald A.; Edwards, Howell G.M.; Farwell, Dennis W.; Janaway, Robert C.; Pollard, A. Mark; Tobin, Desmond J.;

TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT

Abstract

Existe un gran interes en el uso analitico del pelo humano de contextos arqueologicos en areas claves de investigacion como los analisis de ADN, elementos traza e isotopos. Otros tejidos humanos, especialmente el hueso, que han sido usados para los analisis de ADN, elementos quimicos e isotopos, han sido estudiados en relacion a su diagenesis, pero esto no se ha realizado en pelo. Es necesario considerar la compleja interaccion entre el pelo y el ambiente del entierro, creando asi una base firme para el uso de este en futuras investigaciones. A causa de que el pelo humano sobrevive bajo un rango diverso de condiciones ambientales, un estudio piloto ha investigado los procesos basicos de la degradacion del pelo usando muestras de distintas zonas climaticas y tipos diferentes de entierros. La variacion en el grado de preservacion del pelo arqueologico fue caracterizada por microscopia de luz, microscopia de scanner electronico y espectroscopia FT-Raman, relacionando el cambio morfologico de la superficie y la estructura interna con su integridad bioquimica. Los resultados demuestran una desintegracion de los bordes de celulas corticales y la ruptura de las capas cuticulares, junto a la infiltracion de materia de la matriz del entierro, que sugiere una perdida progresiva de cohesion que se debe parcialmente a actividad microbiologica. El pelo medulado demuestra ser mas susceptible a desintegracion fisica dado que provee dos rutas para el ataque microbial y ambiental. Al nivel molecular, el componente proteico pasa por alteracion, y se pierden las conexiones de S-S cystine que son responsables de la fuerza y elasticidad del pelo en individuos vivos

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Keywords

FT-Raman Spectroscopy, Microbial attack, contaminación, microbial attack, 333, Cuero cabelludo, espectroscopía FT Raman, microorganismos, degradación, Scalp hair, Degradation, contamination, Contamination, FT-raman spectroscopy, TEM, degradation

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    9
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Average
Average
Average
Green
gold