title: Biomolecular Evidence of Silk from 8,500 Years Ago.
abstract: Pottery, bone implements, and stone tools are routinely found at Neolithic sites. However, the integrity of textiles or silk is susceptible to degradation, and it is therefore very difficult for such materials to be preserved for 8,000 years. Although previous studies have provided important evidence of the emergence of weaving skills and tools, such as figuline spinning wheels and osseous lamellas with traces of filament winding, there is a lack of direct evidence proving the existence of silk. In this paper, we explored evidence of prehistoric silk fibroin through the analysis of soil samples collected from three tombs at the Neolithic site of Jiahu. Mass spectrometry was employed and integrated with proteomics to characterize the key peptides of silk fibroin. The direct biomolecular evidence reported here showed the existence of prehistoric silk fibroin, which was found in 8,500-year-old tombs. Rough weaving tools and bone needles were also excavated, indicating the possibility that the Jiahu residents may possess the basic weaving and sewing skills in making textile. This finding may advance the study of the history of silk, and the civilization of the Neolithic Age.
authors.affiliation: Department of History of Science and Scientific Archaeology, University of Science and Technology of China, Hefei, China.
authors.forename: Yuxuan
authors.initials: Y
authors.lastname: Gong
authors.affiliation: Institute of Cultural Heritage, Shandong University, Jinan, China.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: Department of History of Science and Scientific Archaeology, University of Science and Technology of China, Hefei, China.
authors.forename: Decai
authors.initials: D
authors.lastname: Gong
authors.affiliation: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Yin
authors.affiliation: Department of History of Science and Scientific Archaeology, University of Science and Technology of China, Hefei, China.
authors.forename: Juzhong
authors.initials: J
authors.lastname: Zhang
mesh_terms: D002681:China; D005349:Fibroins / Q000032:analysis; D049690:History, Ancient; D006801:Humans; D013058:Mass Spectrometry; D047011:Silk / Q000266:history*; D012987:Soil / Q000737:chemistry; D013784:Textiles / Q000266:history
chemical_list: D047011:Silk; D012987:Soil; D005349:Fibroins