Pyroligneous acid

Last updated
Pyroligneous acid [1] [2]
Names
Other names
wood vinegar and wood acid
Identifiers
ECHA InfoCard 100.029.495 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 232-450-0
UNII
Properties
AppearanceYellow to red liquid
Odor acrid smoky
Density 1.08 g/mL
Boiling point 99 °C (210 °F; 372 K)
1.371-1.378
Hazards
GHS labelling:
GHS-pictogram-flamme.svg GHS-pictogram-exclam.svg
Warning
H226, H312, H315, H319, H335
Flash point 44 °C (111 °F; 317 K)
Related compounds
Related compounds
Liquid smoke
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Pyroligneous acid, also called wood vinegar or wood acid, [3] is a dark liquid produced by the destructive distillation of wood and other plant materials.

Contents

Composition

The principal components of pyroligneous acid are 10% acetic acid, acetone and methanol. It was once used as a commercial source for acetic acid.[ citation needed ]

History

Pyroligneous acid (acetum lignorum) was investigated by German chemist Johann Rudolph Glauber. [4] The acid was used as a substitute for vinegar. It was also used topically for treating wounds, ulcers and other ailments. A salt can be made by neutralizing the acid with a lye made from the ashes of the burnt wood. [5]

During the United States Civil War it became increasingly difficult for the Confederate States of America to obtain much needed salt. Curing meat and fish with pyroligneous acid was attempted by cooks to compensate for this deficiency, but it was insufficient. [6]

In the nineteenth century, pyroligneous acid was used to prepare an impure aluminium sulfacetate mordant for use with cotton, but the resulting mixture imparted a burnt odor to the cotton, and Ganswindt recommended its use be abandoned in favour of purer preparations in 1899. [7]

In 1895, pyroligneous acid was first marketed under the brand Wright's Liquid Smoke, [8] a liquid smoke product intended to impart the flavor and some of the preservative effects of wood smoking to meats and vegetables. In the early 21st century, concerns about the carcinogenic effects of components of wood smoke decreased the production of heavily smoked foods in favor of lighter smoking and liquid smoke for foods. [9]

Related Research Articles

<span class="mw-page-title-main">Vinegar</span> Liquid consisting mainly of acetic acid and water

Vinegar is an aqueous solution of acetic acid and trace compounds that may include flavorings. Vinegar typically contains from 5% to 8% acetic acid by volume. Usually, the acetic acid is produced by a double fermentation, converting simple sugars to ethanol using yeast, and ethanol to acetic acid using acetic acid bacteria. Many types of vinegar are made, depending on source materials. The product is now mainly used in the culinary arts as a flavorful, acidic cooking ingredient, or in pickling. Various types are used as condiments or garnishes, including balsamic vinegar and malt vinegar.

<span class="mw-page-title-main">Barbecue</span> Cooking method and apparatus

Barbecue or barbeque is a term used with significant regional and national variations to describe various cooking methods that use live fire and smoke to cook the food. The term is also generally applied to the devices associated with those methods, the broader cuisines that these methods produce, and the meals or gatherings at which this style of food is cooked and served. The cooking methods associated with barbecuing vary significantly but most involve outdoor cooking.

In food processing, brining is treating food with brine or coarse salt which preserves and seasons the food while enhancing tenderness and flavor with additions such as herbs, spices, sugar, caramel or vinegar. Meat and fish are typically brined for less than twenty-four hours while vegetables, cheeses and fruit are brined in a much longer process known as pickling. Brining is similar to marination, except that a marinade usually includes a significant amount of acid, such as vinegar or citrus juice. Brining is also similar to curing, which usually involves significantly drying the food, and is done over a much longer time period.

<span class="mw-page-title-main">Smoking (cooking)</span> Exposing food to smoke to flavor or preserve it

Smoking is the process of flavoring, browning, cooking, or preserving food by exposing it to smoke from burning or smoldering material, most often wood. Meat, fish, and lapsang souchong tea are often smoked.

<span class="mw-page-title-main">Mother of vinegar</span> Biofilm formed on fermenting alcoholic liquids

Mother of vinegar is a biofilm composed of a form of cellulose, yeast, and bacteria that sometimes develops on fermenting alcoholic liquids during the process that turns alcohol into acetic acid with the help of oxygen from the air and acetic acid bacteria (AAB). It is similar to the symbiotic culture of bacteria and yeast (SCOBY) mostly known from production of kombucha, but develops to a much lesser extent due to lesser availability of yeast, which is often no longer present in wine/cider at this stage, and a different population of bacteria. Mother of vinegar is often added to wine, cider, or other alcoholic liquids to produce vinegar at home, although only the bacteria is required, but historically has also been used in large scale production.

<span class="mw-page-title-main">Chipotle</span> Smoke-dried jalapeño

A chipotle, or chilpotle, is a smoke-dried ripe jalapeño chili pepper used for seasoning. It is a chili used primarily in Mexican and Mexican-inspired cuisines, such as Tex-Mex and Southwestern United States dishes. It comes in different forms, such as chipotles en adobo.

<span class="mw-page-title-main">Smoked meat</span> Type of prepared meat

Smoked meat is the result of a method of preparing red meat, white meat, and seafood which originated in the Paleolithic Era. Smoking adds flavor, improves the appearance of meat through the Maillard reaction, and when combined with curing it preserves the meat. When meat is cured then cold-smoked, the smoke adds phenols and other chemicals that have an antimicrobial effect on the meat. Hot smoking has less impact on preservation and is primarily used for taste and to slow-cook the meat. Interest in barbecue and smoking is on the rise worldwide.

<span class="mw-page-title-main">Liquid smoke</span> Edible chemical compound

Liquid smoke is a water-soluble yellow to red liquid used as a flavoring as a substitute for cooking with wood smoke while retaining a similar flavor. It can be used to flavor any meat or vegetable. It is generally made by condensing the smoke from wood without any food additives, but many derivative formulas contain additives for functional purposes.

<span class="mw-page-title-main">Smoked salt</span>

Smoked salt is an aromatic salt smoked with any number of select bark free woods for up to 14 days. The kind of wood used for smoking impacts the flavor, which can range from subtle to bold or even sweet. The most common choices are alder, apple wood, hickory, mesquite, and oak. Infused smoked salts like smoked bacon chipotle sea salt are very popular because of their dynamic flavor profiles.

<span class="mw-page-title-main">Lebanon bologna</span> Type of sausage

Lebanon bologna is a type of cured, smoked, and fermented semidry beef sausage; it is not, in spite of its name, a pork-based bologna. Similar in appearance and texture to salami, it is somewhat darker in color, and is typically served as a cold cut or appetizer.

<span class="mw-page-title-main">Pickling</span> Procedure of preserving food in brine or vinegar

Pickling is the process of preserving or extending the shelf life of food by either anaerobic fermentation in brine or immersion in vinegar. The pickling procedure typically affects the food's texture and flavor. The resulting food is called a pickle, or, to prevent ambiguity, prefaced with pickled. Foods that are pickled include vegetables, fruits, meats, fish, dairy and eggs.

<span class="mw-page-title-main">Outline of food preparation</span> Overview of and topical guide to food preparation

The following outline is provided as an overview of and topical guide to food preparation:

<span class="mw-page-title-main">Smoked fish</span> Fish that has been cured by smoking

Smoked fish is fish that has been cured by smoking. Foods have been smoked by humans throughout history. Originally this was done as a preservative. In more recent times fish is readily preserved by refrigeration and freezing and the smoking of fish is generally done for the unique taste and flavour imparted by the smoking process.

<span class="mw-page-title-main">Curing (food preservation)</span> Food preservation and flavouring processes based on drawing moisture out of the food by osmosis

Curing is any of various food preservation and flavoring processes of foods such as meat, fish and vegetables, by the addition of salt, with the aim of drawing moisture out of the food by the process of osmosis. Because curing increases the solute concentration in the food and hence decreases its water potential, the food becomes inhospitable for the microbe growth that causes food spoilage. Curing can be traced back to antiquity, and was the primary method of preserving meat and fish until the late 19th century. Dehydration was the earliest form of food curing. Many curing processes also involve smoking, spicing, cooking, or the addition of combinations of sugar, nitrate, and nitrite.

<span class="mw-page-title-main">Cured fish</span> Fish subjected to fermentation, pickling or smoking

Cured fish is fish which has been cured by subjecting it to fermentation, pickling, smoking, or some combination of these before it is eaten. These food preservation processes can include adding salt, nitrates, nitrite or sugar, can involve smoking and flavoring the fish, and may include cooking it. The earliest form of curing fish was dehydration. Other methods, such as smoking fish or salt-curing also go back for thousands of years. The term "cure" is derived from the Latin curare, meaning to take care of. It was first recorded in reference to fish in 1743.

<span class="mw-page-title-main">Barbecue in the United States</span> Culinary tradition originating in the southern United States

In the United States, barbecue refers to a technique of cooking meat outdoors over a fire; often this is called pit barbecue, and the facility for cooking it is the barbecue pit. This form of cooking adds a distinctive smoky taste to the meat; barbecue sauce, while a common accompaniment, is not required for many styles.

<span class="mw-page-title-main">Sodium diacetate</span> Chemical compound

Sodium diacetate is a compound with formula NaH(C
2
H
3
O
2
)
2
. It is a salt of acetic acid. It is a colorless solid that is used in seasonings and as an antimicrobial agent.

<span class="mw-page-title-main">Acetic acid</span> Colorless and faint organic acid found in vinegar

Acetic acid, systematically named ethanoic acid, is an acidic, colourless liquid and organic compound with the chemical formula CH3COOH. Vinegar is at least 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water and other trace elements.

Aluminium sulfacetate is a mixture of aluminium salts dissolved in water with formula Al
2
SO
4
(CH
3
CO
2
)
4
.

References

  1. Pyroligneous acid from Sigma-Aldrich
  2. George A. Burdock (2010), "PYROLIGNEOUS ACID", Fenaroli's Handbook of Flavor Ingredients (6th ed.), Taylor & Francis, pp. 1774–1775, ISBN   978-1-4200-9077-2
  3. Webster's Revised Unabridged Dictionary (1913)
  4. Fielding H. Garrison (1921), History of Medicine (3rd ed.), W. B. Saunders, p. 286
  5. Johann Rudolph Glauber (1651), Furni Novi Philosophici, vol. 1, Johann Jansson, pp. 47–49
  6. Mark Kurlansky (2002). Salt: A World History . Penguin Books. pp.  267–68. ISBN   0-14-200161-9.
  7. Ganswindt, Albert (1889). Handbuch der Färberei und der damit verwandten vorbereitenden und vollendenden Gewerbe (in German). p. 270.
  8. Unusual Stories of Unusual Men: Ernest H. Wright - Classification: "Condensed Smoke". The Rotarian. 1923. pp. 209–10, 240.
  9. Bruce Kraig (31 January 2013). The Oxford Encyclopedia of Food and Drink in America. OUP USA. pp. 2–. ISBN   978-0-19-973496-2.