Is It Hop? Identifying Hop Fibres in a European Historical Context

Hop (Humulus lupulus L.) is an ancient perennial crop plant, native to the Northern Hemisphere. The archaeological evidence dates back to at least the sixth century AD in Europe. Hop has been used for beer brewing, in sleeping draughts, as bedding and for antibacterial purposes. Less known is that hop fibres have also been used for textiles and paper. However, it is difficult to distinguish hop from other bast fibres. Here, we present a set of fibre features, which, when found together in an archaeological/historical material within a European context, provide a strong indication that the fibres are hop.

[1]  M. S. Pais,et al.  Molecular phylogeny of wild Hops, Humulus lupulus L. , 2006, Heredity.

[2]  B. Holst,et al.  Determining the fibrillar orientation of bast fibres with polarized light microscopy: the modified Herzog test (red plate test) explained , 2013, Journal of microscopy.

[3]  Margarita Gleba,et al.  Textiles and Textile Production in Europe: From Prehistory to Ad 400 , 2012 .

[4]  John Grayson,et al.  Identification of Vegetable Fibres , 1982 .

[5]  B. Holst,et al.  Identifying plant fibre textiles from Norwegian Merovingian Period and Viking Age graves: The Late Iron Age Collection of the University Museum of Bergen , 2017 .

[6]  J. Heinemeier,et al.  Nettle as a distinct Bronze Age textile plant , 2012, Scientific Reports.

[7]  Walter O. Moeller,et al.  Textile Manufacture in the Northern Roman Provinces , 1970 .

[8]  B. Holst,et al.  A procedure for identifying textile bast fibres using microscopy: flax, nettle/ramie, hemp and jute. , 2010, Ultramicroscopy.

[9]  B. Holst,et al.  Comment on “30,000-Year-Old Wild Flax Fibers” , 2010, Science.

[10]  M. Rösch New aspects of agriculture and diet of the early medieval period in central Europe: waterlogged plant material from sites in south-western Germany , 2008 .

[11]  D. Eichelberger The Chemistry Of Beer The Science In The Suds , 2016 .

[12]  I. Hornsey A history of beer and brewing , 2003 .

[13]  M. Lundström,et al.  Genetic Diversity in Remnant Swedish Hop (Humulus lupulus L.) Yards from the 15th to 18th Century , 2014, Economic Botany.

[14]  N. Reddy,et al.  Properties of natural cellulose fibers from hop stems , 2009 .

[15]  Martha Goodway,et al.  Fiber Identification in Practice , 1987 .

[16]  K. Behre,et al.  The history of beer additives in Europe — A review , 1999 .

[17]  Ben-Erik Van Wyk,et al.  Food plants of the world : an illustrated guide , 2005 .

[18]  N. Petraco,et al.  Color Atlas and Manual of Microscopy for Criminalists, Chemists, and Conservators , 2003 .

[19]  Bill Laws,et al.  Fifty Plants That Changed the Course of History , 2010 .

[20]  B. Holst,et al.  Flax look‐alikes: Pitfalls of ancient plant fibre identification , 2014 .

[21]  B. Holst,et al.  Viking and Early Middle Ages Northern Scandinavian Textiles Proven to be made with Hemp , 2013, Scientific Reports.

[22]  Bruno Luniak The identification of textile fibres : qualitative and quantitative analysis of fibre blends , 1953 .

[23]  K. Vajanto,et al.  Seeking Nettle Textiles – Utilizing a Combination of Microscopic Methods for Fibre Identification , 2018 .

[24]  J. Lord,et al.  Polarized Light Microscopy: An Old Technique Casts New Light on Māori Textile Plants , 2017 .