Tanbark#Oak bark

File:Holford, waterwheel at Combe House Hotel - geograph.org.uk - 50057.jpg, Somerset, England. The overshot waterwheel was cast by Bridgwater ironfounder H Culverwell & Co in 1892 to replace an earlier wheel. It was used to grind oak bark for the tannery complex established here in the 1840s by James Hayman. When the tannery closed in 1900, the waterwheel was adapted to other uses, such as grinding grain for grist, cutting chaff, chopping apples for the cider press, and generating electricity. It also cracked stones in a nearby quarry. The gearing survives, too.]]

In Europe, oak is a common source of tanbark. Quercitannic acid is the chief constituent found in oak barks.{{Cite web|url=http://www.henriettesherbal.com/eclectic/bpc1911/quercus.html|title=Quercus Cortex. Oak Bark. {{!}} Henriette's Herbal Homepage|website=www.henriettesherbal.com|access-date=2018-07-09}} The bark is taken from young branches and twigs in oak coppices and can be up to 4 mm thick; it is grayish-brown on the outside and brownish-red on the inner surface.[http://www.online-health-care.com/blog/herbal-medicines/oaks-herb-description-dosage-and-useful-properties Oak on www.online-health-care.com]

In some areas of the United States, such as central Pennsylvania and northern California{{citation needed|reason=Unsourced claim about regional variations in usage|date=July 2015}}, "mulch" is often called tanbark, even by manufacturers and distributors. In these areas, the word "mulch" may refer to peat moss or to very fine tanbark. In California, Notholithocarpus densiflorus (commonly known as the tanoak or tanbark-oak) was used.{{Cn|date=January 2021}}

In America, condensed tannins are also present in the bark of blackjack oak (Quercus marilandica).{{Cite journal|last1=Bae|first1=Young-soo|last2=Burger|first2=Johann F.W.|last3=Steynberg|first3=Jan P.|last4=Ferreira|first4=Daneel|last5=Hemingway|first5=Richard W.|date=January 1994|title=Flavan and procyanidin glycosides from the bark of blackjack oak|journal=Phytochemistry|volume=35|issue=2|pages=473–478|doi=10.1016/s0031-9422(00)94785-x|pmid=7764483 |bibcode=1994PChem..35..473B |issn=0031-9422|url=https://zenodo.org/record/1259685}} In New York, on the slopes of Mount Tremper, hemlock bark was a major source of tanbark during the 19th century.{{Cn|date=January 2021}}

Around the Mediterranean Sea, sumach (Rhus coriaria) leaves and bark are used.{{Cn|date=January 2021}}

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.The National Cyclopaedia of Useful Knowledge, Vol II (1847), Charles Knight, London, p.873. Used tanbark is employed in horticulture and spread on flower beds and in glass houses to keep down weeds and protect plant roots.{{Cn|date=January 2021}}

File:EichenLoheSchaeler1.jpg|Tool to remove bark from oak branches

File:Schleissen 1.jpg|Removal of bark from oak branches

File:Schleissen 2.jpg|Another view of the process

File:Oakbark.jpg|The bark of an oak tree

File:Young red oak bark.jpg|Young red oak bark

• Barkdust

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Category:Tanning (leather)

Category:Non-timber forest products