Glasswort

Source: Wikipedia, the free encyclopedia.
Salicornia europaea (common glasswort).

The glassworts are various succulent, annual

salt marshes. The original English glasswort plants belong to the genus Salicornia, but today the glassworts include halophyte plants from several genera, some of which are native to continents unknown to the medieval English, and growing in ecosystems, such as mangrove
swamps, never envisioned when the term glasswort was coined.

The common name "glasswort" came into use in the 16th century to describe plants growing in England whose ashes could be used for making

soda-based (as opposed to potash-based) glass.[1][2]

Industrial uses

Main articles: Cristallo and Castile soap

The ashes of glasswort plants, and also of their Mediterranean counterpart

soapmaking. Soda ash is an alkali whose active ingredient is now known to be sodium carbonate
. Glasswort and saltwort plants sequester the sodium they absorb from salt water into their tissues (see
Salsola soda). Ashing of the plants converts some of this sodium into sodium carbonate (or "soda", in one of the old uses of the term).[citation needed
]

In the medieval and early post-medieval centuries, various glasswort plants were collected at tidal marshes and other saline places in the Mediterranean region. The collected plants were burned. The resulting ashes were mixed with water. Sodium carbonate is soluble in water. Non-soluble components of the ashes sank to the bottom of the water container. The water with the sodium carbonate dissolved in it was then transferred to another container, and then the water was evaporated off, leaving behind the sodium carbonate. Another major component of the ashes that is soluble in water is potassium carbonate, a.k.a. potash. The resulting product consisted mainly of a mixture of sodium carbonate and potassium carbonate. This product was called "soda ash" (it was also called "alkali"). It contained 20% to 30% sodium carbonate. For glassmaking, it was superior to a potash product obtained by the same procedure from the ashes of non-salty plants. If plant ashes were not washed as just described, they were still usable in glassmaking but the results were not as good.[citation needed]

The appearance of the word glasswort in English is reasonably contemporaneous with a 16th-century resurgence in English glassmaking, which had suffered a long decline after Roman times.

soda ash as a flux. These glassmakers would have recognized Salicornia europaea growing in England as a source for soda ash. Prior to their arrival, it was said that the plant "hath no name in English".[2]

By the 18th century,

Western Isles of Scotland, and one estimate is that 100,000 people were occupied with "kelping" during the summer months.[6] In the same period, soda ash (la soude de Narbonne) was produced in quantity from glasswort proper around Narbonne, France.[7][8] The commercialization of the Leblanc process for synthesizing sodium carbonate (from salt, limestone, and sulfuric acid) brought an end to the era of farming for soda ash in the first half of the 19th century.[citation needed
]

Tecticornia pergranulata (blackseed glasswort).

Culinary uses

Glasswort salad

Young shoots of Salicornia europaea are tender and can be eaten raw as a salad: glasswort salad or samphire salad (Turkish: Deniz börülcesi salatası). This salad is a part of Turkish cuisine, also made with lemon juice, olive oil[9] and garlic.[10][11] It is commonly served as a meze.[citation needed] The shoots can also be pickled.[12]

The plant can further be prepared in several ways – cooked, steamed, or stir fried – and eaten as a vegetable dish.[13]

Glasswort species

Plants that have been called glassworts include:

Salicornia perennis (perennial glasswort)

References

  1. ^ "Definition of glasswort," Oxford English Dictionary, 2nd Edition (Oxford University Press, 1989). Definition retrieved from online edition (subscription required) July 20, 2007.
  2. ^
    ISBN 978-0-521-44549-8
    ). This book contains a facsimile of Turner's original 1562 and 1568 volumes, along with an edited transcript. The transcript of Turner's article on Kali (p. 673) includes the sentence "Kali, as I do remember, hath no name in English, and although it be very plenteous in England, yet I never could meet with any man that knew it. But lest this herb should be without a name, it may be called Saltwurt, because it is salt in taste, and Salalkali is made thereof. It may also be called Glas Wede, because the ashes of it serve to make glass."
  3. ^ Engle, Anita (1977). Readings in Glass History: No. 8 (Phoenix Press, Jerusalem, ASIN B0007BPWYG). Quoted in review by Haden, H. J. (1973). Technology and Culture, Vol. 19, No. 3 pp. 548–550.
  4. ISBN 978-0-87052-901-6). See also the web version
    , retrieved July 31, 2007.
  5. ISSN 1136-2049. Archived at WebCite from this original URL
    on 2008-03-01.
  6. ISBN 0-8369-1909-2
    .
  7. ^ Pereira, Jonathan (1842). Elements of Materia Medica and Therapeutics, Vol. I (Longman, Brown, Green, and Longmans, London), p. 551. Pereira indicates that soude de Narbonne was obtained from Salicornia herbacea, and had an alkali content of 14–15%. Online version at https://books.google.com/
  8. ^ Fremy, Edmond (1883). Encyclopédie Chimique: Tome V, Application de Chimique Inorganique (Dunod, Paris), p. 548. Online version retrieved July 21, 2007.
  9. ISBN 978-975-23-0450-5
    .
  10. ^ Deniz Börülcesi Salatasi
  11. ^ Sarımsaklı Deniz Börülcesi Tarifi
  12. OCLC 799792
    .
  13. ISBN 978-1-4930-1499-6
    .
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