Indigo extracted from Woad - Specimen details

Indigo extracted from Woad - Specimen details

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Catalogue Number: 99337

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Plant Name 11.00 CRUCIFERAE Isatis tinctoria Entry Book Number 1.2016
Artefact Name Indigo extracted from Woad Vernacular Name
Iso Country Not defined TDWG Region Not defined
Parts Held Indigo extracted from Woad Geography Description
Uses Indigo extracted from WoadUse: User: Not defined TDWG use
Storage Bottles, boxes etc Related Items
Donor Hill, David J. Donor No
Donor Date 29/01/2016 Donor Notes
Collector Hill, Robin Collector No
Collection Notes Collection Date
Exhibition Expedition
Number Components Publication
Notes: Woad leaves have 0.45% indigo so from 2.5 lb of woad leaves 5 g of indigo was obtained. x0Dx0ATo extract the indigo: boil water, put in fresh leaves, keep boiling constantly, strain off water, cool quickly to room temperature, add alkali ammonia solution, be, at in air until indigo precipitates out, filter, then dry, or allow to preciptitate (David Hill, personal communication).

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