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From Wikipedia, the free encyclopedia

An image of decocted Chinese medicine 一貫煎 on snow, taken in the United States. The snow is on the border of a forest near a residential area, with a small lake in the background near trees.
A traditional Chinese herbal decoction (湯劑/汤剂)
Turkish coffee beginning to boil. Decoction compares to brewing coffee through percolation.

Decoction is a method of extraction by boiling herbal or plant material (which may include stems, roots, bark and rhizomes) to dissolve the chemicals of the material. It is the most common preparation method in various herbal medicine systems. Decoction involves first drying the plant material; then mashing, slicing, or cutting the material to allow for maximum dissolution; and finally boiling in water to extract oils, volatile organic compounds and other various chemical substances.[1] Occasionally, aqueous ethanol or glycerol may be used instead of water.[2] Decoction can be used to make tisanes, tinctures and similar solutions. Decoctions and infusions may produce liquids with differing chemical properties, as the temperature or preparation difference may result in more oil-soluble chemicals in decoctions versus infusions. The process can also be applied to meats and vegetables to prepare bouillon or stock,[3] though the term is typically only used to describe boiled plant extracts, usually for medicinal or scientific purposes.[citation needed]

Decoction is also the name for the resulting liquid. Although this method of extraction differs from infusion and percolation, the resultant liquids can sometimes be similar in their effects, or general appearance and taste.[citation needed]

YouTube Encyclopedic

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  • Plant Extraction Methods - Decoction and Maceration | JPTV
  • Decoction (Method of Extraction) = Practical Demonstration with Examples
  • How To Make a HERBAL Decoction
  • How To Make A HERBAL Decoction
  • Herbal HOW TO | DECOCTION

Transcription

Etymology

The term dates back to 1350–1400[4] from the past participle stem of Latin decoquere (meaning "to boil down"), from de ("from") + coquere ("to cook").[5]

Use

In brewing, decoction mashing is the traditional method where a portion of the mash is removed to a separate vessel, boiled for a time and then returned to the main mash, raising the mash to the next temperature step.[citation needed]

In herbalism, decoctions are usually made to extract fluids from hard plant materials such as roots and bark.[2] To achieve this, the plant material is usually boiled for 1–2 hours in 1-5 liters of water. It is then strained. Ayurveda also uses this method to create Kashayam-type herbal medicines.[citation needed]

For teas, decoction involves boiling the same amount of the herb and water that would be used for an infusion (one teaspoon per cup) for about five to ten minutes.[citation needed]

See also

References

  1. ^ Biology-online.org
  2. ^ a b "Annex 1: WHO guidelines on good herbal processing practices for herbal medicines". WHO Technical Report Series. Geneva, Switzerlandglish: World Health Organization. 2018. ISSN 0512-3054. Retrieved 24 April 2022.
  3. ^ Courtine, Robert J.; et al., eds. (1988) [French edition published 1984]. Larousse Gastronomique (English ed.). p. 362. ISBN 0-600-32390-0.
  4. ^ "Dictionary.reference.com". Dictionary.reference.com. Retrieved 2018-05-29.
  5. ^ Etymonline.com

External links

This page was last edited on 3 March 2024, at 20:40
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