Locust bean gum

Last updated
Locust bean gum
Semillas de algarrobo (15574259830).jpg
Locust beans in a pod
Names
Other names
Carob gum; Carob bean gum; Carobin
Identifiers
ECHA InfoCard 100.029.571 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 232-541-5
E number E410 (thickeners, ...)
UNII
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Locust bean gum (LBG, carob gum, carob bean gum, carobin, E410 ) is a galactomannan vegetable gum extracted from the seeds of the carob tree (Ceratonia siliqua) and used as a thickening agent (gelling agent) in food technology.

Contents

Production

Locust bean gum is extracted from the seeds of the carob tree, which is native to the Mediterranean region. In 2016, nearly 75% of global production came from Portugal, Italy, Spain and Morocco. [1] The seeds are contained within long pods that grow on the tree. First, the pods are kibbled to separate the seed from the pulp. Then, the seeds have their skins removed by an acid or heat treatment. Acid treatment yields a lighter coloured gum than heat treatment; [2] :222 the deskinned seed is then split and gently milled. This causes the brittle germ to break up while not affecting the more robust endosperm. The two are separated by sieving. The separated endosperm can then be milled by a roller operation to produce the final locust bean gum powder. [3] Alternatively, the gum can be extracted from the seeds with water, precipitated with alcohol, filtered, dried and milled, to give a very pure "clarified" locust bean gum. [2] :223

Chemistry

Locust bean gum occurs as a white to yellow-white powder. It consists chiefly of high-molecular-weight hydrocolloidal polysaccharides, composed of galactose and mannose units combined through glycosidic linkages, which may be described chemically as galactomannan. It is dispersible in either hot or cold water, forming a sol having a pH between 5.4 and 7.0, which may be converted to a gel by the addition of small amounts of sodium borate. Locust bean gum is composed of a straight backbone chain of D-mannopyranose units with a side-branching unit of D-galactopyranose having an average of one D-galactopyranose unit branch on every fourth D-mannopyranose unit. [4]

Food science

The bean, when made into powder, is sweet—with a flavor similar to chocolate—and is used to sweeten foods and as a chocolate substitute, although this carob powder is produced from the fruit pod after removal of seeds, while the gum is produced from the seeds themselves. [5] It is also used in pet foods and inedible products such as mining products, paper making, and to thicken textiles. It is used in cosmetics and to enhance the flavor of cigarettes. Shoe polish and insecticides also have locust bean gum powder as an additive. [6] It is soluble in hot water. [7]

See also

Related Research Articles

<span class="mw-page-title-main">Hemicellulose</span> Class of plant cell wall polysaccharides

A hemicellulose is one of a number of heteropolymers, such as arabinoxylans, present along with cellulose in almost all terrestrial plant cell walls. Cellulose is crystalline, strong, and resistant to hydrolysis. Hemicelluloses are branched, shorter in length than cellulose, and also show a propensity to crystallize. They can be hydrolyzed by dilute acid or base as well as a myriad of hemicellulase enzymes.

<span class="mw-page-title-main">Guar</span> Species of flowering plant in the bean family Fabaceae

The guar or cluster bean, with the botanical name Cyamopsis tetragonoloba, is an annual legume and the source of guar gum. It is also known as gavar, gawar, or guvar bean.

<span class="mw-page-title-main">Guar gum</span> Vegetable gum from the guar bean, Cyamopsis tetragonoloba

Guar gum, also called guaran, is a galactomannan polysaccharide extracted from guar beans that has thickening and stabilizing properties useful in food, feed, and industrial applications. The guar seeds are mechanically dehusked, hydrated, milled and screened according to application. It is typically produced as a free-flowing, off-white powder.

<span class="mw-page-title-main">Cocoa bean</span> Fatty seed of Theobroma cacao which is the basis of chocolate

The cocoa bean or simply cocoa, also called cacao, is the dried and fully fermented seed of Theobroma cacao, from which cocoa solids and cocoa butter can be extracted. Cocoa beans native to the Amazon rainforest are the basis of chocolate, and Mesoamerican foods including tejate, an indigenous Mexican drink.

<span class="mw-page-title-main">Flour</span> Cereal grains ground into powder

Flour is a powder made by grinding raw grains, roots, beans, nuts, or seeds. Flours are used to make many different foods. Cereal flour, particularly wheat flour, is the main ingredient of bread, which is a staple food for many cultures. Corn flour has been important in Mesoamerican cuisine since ancient times and remains a staple in the Americas. Rye flour is a constituent of bread in both Central Europe and Northern Europe.

Carrageenans or carrageenins are a family of natural linear sulfated polysaccharides that are extracted from red edible seaweeds. Carrageenans are widely used in the food industry, for their gelling, thickening, and stabilizing properties. Their main application is in dairy and meat products, due to their strong binding to food proteins. In recent years, carrageenans have emerged as a promising candidate in tissue engineering and regenerative medicine applications as they resemble native glycosaminoglycans (GAGs). They have been mainly used for tissue engineering, wound coverage, and drug delivery.

<span class="mw-page-title-main">Carob</span> Small tree grown for its edible pods and landscaping

The carob is a flowering evergreen tree or shrub in the Caesalpinioideae sub-family of the legume family, Fabaceae. It is widely cultivated for its edible fruit pods, and as an ornamental tree in gardens and landscapes. The carob tree is native to the Mediterranean region and the Middle East. Portugal is the largest producer of carob, followed by Italy and Morocco.

Gum may refer to:

<span class="mw-page-title-main">Xanthan gum</span> Polysaccharide gum used as a food additive and thickener

Xanthan gum is a polysaccharide with many industrial uses, including as a common food additive. It is an effective thickening agent, emulsifier, and stabilizer that prevents ingredients from separating. It can be produced from simple sugars using a fermentation process and derives its name from the species of bacteria used, Xanthomonas campestris.

<span class="mw-page-title-main">Galactomannan</span> Class of plant and fungal polysaccharides consisting of mannose and galactose monomers

Galactomannans are polysaccharides consisting of a mannose backbone with galactose side groups, more specifically, a (1-4)-linked beta-D-mannopyranose backbone with branchpoints from their 6-positions linked to alpha-D-galactose,.

Locust tree can mean:

<span class="mw-page-title-main">Thickening agent</span> Increases the viscosity of a liquid without altering its other properties

A thickening agent or thickener is a substance which can increase the viscosity of a liquid without substantially changing its other properties. Edible thickeners are commonly used to thicken sauces, soups, and puddings without altering their taste; thickeners are also used in paints, inks, explosives, and cosmetics.

<span class="mw-page-title-main">Cassia gum</span>

Cassia gum is the flour and food additives made from the endosperms of the seeds of Senna obtusifolia and Senna tora. It is composed of at least 75% polysaccharide, primarily galactomannan with a mannose:galactose ratio of 5:1, resulting in a high molecular mass of 200,000-300,000 Da.

<i>Senna tora</i> Species of flowering plant

Senna tora is a plant species in the family Fabaceae and the subfamily Caesalpinioideae. Its name is derived from its Sinhala name tora (තෝර). It grows wild in most of the tropics and is considered a weed in many places. Its native range is in Central America. Its most common English name is sickle senna or sickle wild sensitive-plant. Other common names include sickle pod, tora, coffee pod and foetid cassia. It is often confused with Chinese senna or sickle pod, Senna obtusifolia.

<i>Tara spinosa</i> Species of legume

Tara spinosa, commonly known as tara (Quechua), also known as Peruvian carob or spiny holdback, is a small leguminous tree or thorny shrub native to Peru. T. spinosa is cultivated as a source of tannins based on a galloylated quinic acid structure. This chemical structure has been confirmed also by LC–MS. It is also grown as an ornamental plant because of its large colorful flowers and pods.

<span class="mw-page-title-main">Carob pod oil</span>

Carob pod oil is an edible oil pressed from carob beans, used medicinally.

<i>Ectomyelois ceratoniae</i> Species of moth

Ectomyelois ceratoniae, the locust bean moth, more ambiguously known as "carob moth", is a moth of the family Pyralidae. It has a nearly cosmopolitan distribution.

<span class="mw-page-title-main">Sour cream</span> Fermented dairy product

Sour cream is a dairy product obtained by fermenting regular cream with certain kinds of lactic acid bacteria. The bacterial culture, which is introduced either deliberately or naturally, sours and thickens the cream. Its name comes from the production of lactic acid by bacterial fermentation, which is called souring. Crème fraîche is one type of sour cream with a high fat content and less sour taste.

Flour extraction is the common process of refining Whole Grain Flour first milled from grain or grist by running it through sifting devices, often called flour dressers.

References

  1. "Carob production in 2016; Crops/World Regions/Production Quantity from pick lists". UN Food and Agriculture Organization, Statistics Division. 2017. Retrieved 26 June 2018.
  2. 1 2 Giri, Tapan Kumar; Ghosh, Bijaya (2021-06-12). Plant and Algal Hydrogels for Drug Delivery and Regenerative Medicine. Woodhead Publishing. ISBN   978-0-12-821650-7.
  3. CyberColloids: Locust bean gum production, CyberColloids, Hydrocolloids research and development webpage.
  4. Glicksman, Martin (1963), "Utilization of Natural Polysaccharide Gums in the Food Industry", Advances in Food Research Volume 11, Advances in Food Research, vol. 11, Elsevier, pp. 109–200, doi:10.1016/s0065-2628(08)60065-8, ISBN   978-0-12-016411-0 , retrieved 2021-09-20
  5. Dakia PA, Wathelet B, Paquot M (2007). "Isolation and chemical evaluation of carob (Ceratonia siliqua L.) seed germ". Food Chemistry. 102 (4): 1368–1374. doi:10.1016/j.foodchem.2006.05.059.
  6. "Locust Bean Gum Powder". Archived from the original on 2012-03-30. Retrieved 2010-12-15.
  7. Martin Chaplin: Locust bean gum Archived 2005-11-05 at the Wayback Machine , London South Bank University, web page.