Tanbark
Tanbark is the bark of certain species of trees, traditionally used for tanning hides into leather.[1]
The words "tannin", "tanning", "tan," and "tawny" are derived from the Medieval Latin tannare, "to convert into leather."
Bark mills are horse- or oxen-driven or water-powered edge mills[2] and were used in earlier times to shred the tanbark to derive tannins for the leather industry. A "barker" was a person who stripped bark from trees to supply bark mills.
Tanbark around the world
In Europe,
In some areas of the United States, such as central Pennsylvania and northern
Around the Mediterranean Sea, sumach (Rhus coriaria) leaves and bark are used.[citation needed]
In Africa and Australia, acacia (called "wattle") bark is used by tanners. One ton of wattle or mimosa bark produces about 150 lbs of pure tannin.[6] Used tanbark is employed in horticulture and spread on flower beds and in glass houses to keep down weeds and protect plant roots.[citation needed]
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Tool to remove bark from oak branches
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Removal of bark from oak branches
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Another view of the process
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The bark of an oak tree
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Young red oak bark
See also
References
- ISBN 9780080453163
- ^ "CONTENTdm". cslib.cdmhost.com. Retrieved 2018-07-09.
- ^ "Quercus Cortex. Oak Bark. | Henriette's Herbal Homepage". www.henriettesherbal.com. Retrieved 2018-07-09.
- ^ Oak on www.online-health-care.com
- PMID 7764483.
- ^ The National Cyclopaedia of Useful Knowledge, Vol II (1847), Charles Knight, London, p.873.