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

There is developing interest in the analytical use of human hair from archaeological contexts in key research areas such as DNA, trace elemental and isotopic analyses. Other human tissues, especially bone, that have been used for trace element, isotopic and DNA analyses have had extensive study conc...

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Autores principales:	Wilson,Andrew S., Dixon,Ronald A., Edwards,Howell G.M., Farwell,Dennis W., Janaway,Robert C., Pollard,A. Mark, Tobin,Desmond J.
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Sociales y Jurídicas. Departamento de Antropología 2001
Materias:	Scalp hair degradation contamination microbial attack TEM FT-Raman Spectroscopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-73562001000200016
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spelling	oai:scielo:S0717-735620010002000162005-09-29TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENTWilson,Andrew S.Dixon,Ronald A.Edwards,Howell G.M.Farwell,Dennis W.Janaway,Robert C.Pollard,A. MarkTobin,Desmond J. Scalp hair degradation contamination microbial attack TEM FT-Raman Spectroscopy There is developing interest in the analytical use of human hair from archaeological contexts in key research areas such as DNA, trace elemental and isotopic analyses. Other human tissues, especially bone, that have been used for trace element, isotopic and DNA analyses have had extensive study concerning their diagenesis, but this has not been done for hair. Consideration must be given to the complex interaction of hair with its buried environment, thereby laying a firm basis for the use of hair in future research. Since human hair is known to survive under a diverse range of environmental conditions, a pilot study has investigated the basic processes of hair degradation, using samples from different climatic zones and burial types. Variation in the degree of preservation of archaeological hair was characterized by light microscopy, electron microscopy, and FT-Raman spectroscopy, relating morphological change of the surface and internal structure of hair to its biochemical integrity. The results demonstrate a breakdown of cortical cell boundaries and disruption of the cuticular layering, coupled with infiltration of material from the burial matrix that suggests a progressive loss of cohesion that is in part due to microbiological activity. Medullated hair is shown to be more susceptible to physical breakdown by providing two routes for microbial and environmental attack. At the molecular level the proteinaceous component undergoes alteration, and the S-S cystine linkages, responsible for the strength and resilience of hair in living individuals, are lostinfo:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias Sociales y Jurídicas. Departamento de AntropologíaChungará (Arica) v.33 n.2 20012001-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-73562001000200016en10.4067/S0717-73562001000200016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Scalp hair degradation contamination microbial attack TEM FT-Raman Spectroscopy
spellingShingle	Scalp hair degradation contamination microbial attack TEM FT-Raman Spectroscopy 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
description	There is developing interest in the analytical use of human hair from archaeological contexts in key research areas such as DNA, trace elemental and isotopic analyses. Other human tissues, especially bone, that have been used for trace element, isotopic and DNA analyses have had extensive study concerning their diagenesis, but this has not been done for hair. Consideration must be given to the complex interaction of hair with its buried environment, thereby laying a firm basis for the use of hair in future research. Since human hair is known to survive under a diverse range of environmental conditions, a pilot study has investigated the basic processes of hair degradation, using samples from different climatic zones and burial types. Variation in the degree of preservation of archaeological hair was characterized by light microscopy, electron microscopy, and FT-Raman spectroscopy, relating morphological change of the surface and internal structure of hair to its biochemical integrity. The results demonstrate a breakdown of cortical cell boundaries and disruption of the cuticular layering, coupled with infiltration of material from the burial matrix that suggests a progressive loss of cohesion that is in part due to microbiological activity. Medullated hair is shown to be more susceptible to physical breakdown by providing two routes for microbial and environmental attack. At the molecular level the proteinaceous component undergoes alteration, and the S-S cystine linkages, responsible for the strength and resilience of hair in living individuals, are lost
author	Wilson,Andrew S. Dixon,Ronald A. Edwards,Howell G.M. Farwell,Dennis W. Janaway,Robert C. Pollard,A. Mark Tobin,Desmond J.
author_facet	Wilson,Andrew S. Dixon,Ronald A. Edwards,Howell G.M. Farwell,Dennis W. Janaway,Robert C. Pollard,A. Mark Tobin,Desmond J.
author_sort	Wilson,Andrew S.
title	TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT
title_short	TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT
title_full	TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT
title_fullStr	TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT
title_full_unstemmed	TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT
title_sort	towards an understanding of the interaction of hair with the depositional environment
publisher	Universidad de Tarapacá. Facultad de Ciencias Sociales y Jurídicas. Departamento de Antropología
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-73562001000200016
work_keys_str_mv	AT wilsonandrews towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment AT dixonronalda towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment AT edwardshowellgm towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment AT farwelldennisw towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment AT janawayrobertc towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment AT pollardamark towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment AT tobindesmondj towardsanunderstandingoftheinteractionofhairwiththedepositionalenvironment
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TOWARDS AN UNDERSTANDING OF THE INTERACTION OF HAIR WITH THE DEPOSITIONAL ENVIRONMENT

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