gelatin

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gelatin

or

animal jelly,

foodstuff obtained from connective tissue (found in hoofs, bones, tendons, ligaments, and cartilage) of vertebrate animals by the action of boiling water or dilute acid. It is largely composed of denatured collagencollagen
, any of a group of proteins found in skin, ligaments, tendons, bone and cartilage, and other connective tissue. Cells called fibroblasts form the various fibers in connective tissue in the body.
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, a protein particularly rich in the amino acids proline and hydroxyproline. The process of manufacture is a complex one that involves removing foreign substances, boiling the material (usually in distilled water in aluminum vessels to prevent contamination), and purifying it of all chemicals used in freeing the gelatin from the connective tissues. The final product in its purest form is brittle, transparent, colorless, tasteless, and odorless and has the distinguishing property of dissolving in hot water and congealing when cold. In contact with cold water it takes up from 5 to 10 times its own weight and swells to an elastic, transparent mass. Gelatin, being readily digested and absorbed, is a good food for children and invalids. It is important in fine cookery as a vehicle for other materials, in the form of jellied soups, molded meats and salads, and frozen desserts. Preparations of it are used in the home manufacture of jam, jellies, and preserves to ensure jellification of fruit juices. It is used in the drying and preserving of fruits and meats, in the glazing of coffee, and in the preparation of powdered milk and other powdered foods. Bakeries use it in making meringues, eclairs, and other delicacies. In confectionery making it is used as the basis of taffy, nougat, marshmallows, and fondant. Ice cream manufacture employs it to maintain a permanent emulsion of other ingredients and thus to give body to the finished product. In scientific processes gelatin is widely employed, being used in electrotyping, photography, waterproofing, and dyeing, and in coating microscopic slides. It is used as a culture medium for bacteriological research and also to make coatings for pills and capsules, for court plaster, and for some surgical dressings. It affords a base for ointments and pastes, such as toothpaste; it is an emulsifying agent useful in making liquid combinations and various sprays. In its less pure forms gelatin is known as glue and size. Vegetable gelatin, or agaragar
, product obtained from several species of red algae, or seaweed, chiefly from the Ceylon, or Jaffna, moss (Gracilaria lichenoides) and species of Gelidium, harvested in eastern Asia and California.
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, is derived from East Indian seaweeds.

Gelatin

 

(gelatine), a mixture of protein substances of animal origin.

Gelatin is prepared from bones, tendons, and cartilage by prolonged boiling in water. In this process collagen, a component of connective tissue, becomes gluten. The resulting solution is evaporated, clarified, and chilled until it is converted to a gel, which is cut in pieces and dried. Gelatin is produced in sheet or powdered form. Finished dry gelatin is tasteless, odorless, transparent, and almost colorless or slightly yellow. It swells greatly in cold water and dilute acids, but does not dissolve. Upon heating, the swollen gelatin dissolves, forming a sticky solution that hardens to a gel. It is used in medicine and biology (as styptic or nutrient media), in pharmacy (the manufacture of capsules, suppositories, and so forth), in the food industry (production of gelatin, jelly, marmalade, and other confectionery products), in photography and cinematography (preparation of emulsions in the light-sensitive layer of cinema film, photographic paper, and X-ray film), and in industry (the sizing of high-grade paper; the manufacture of paper money, paints, artificial pearls, and other goods).

gelatin

[′jel·ət·ən]
(materials)
(organic chemistry)
A protein derived from the skin, white connective tissue, and bones of animals; used as a food and in photography, the plastics industry, metallurgy, and pharmaceuticals.

gelatine

, gelatin
1. a colourless or yellowish water-soluble protein prepared by boiling animal hides and bones: used in foods, glue, photographic emulsions, etc.
2. any of various substances that resemble gelatine
3. a translucent substance used for colour effects in theatrical lighting
References in periodicals archive ?
Repositioning the clip satisfactorily treats this complication, either through unclipping and repositioning or reorientation with oxidized cellulose or gelatin sponge as in our case.
Gelatin sponge is currently regarded as temporary embolization agent (2-6 week duration of occlusion).
The middle ear was packed with gelatin sponge. The stapes prosthesis was not successfully placed.
The middle ear was filled with absorbable gelatin sponge, and the tympanic membrane perforation was repaired with a temporal fascia underlay graft.
03 Contract Award Notice - Successful Supplier(s): The Common Services Agency (more commonly known as National Services Scotland) (the Authority~) acting through its division Procurement, Commissioning and Facilities is undertaking this procurement of supply of Absorbable Haemostatic Cellulose and Gelatin Sponge Dressings to the National Distribution Centre, Larkhall ML9 2QX on behalf of all entities constituted pursuant to the National Health Service (Scotland) Act 1978 (i.e.
Supply and Delivery of Haemostatic DressingsScope includes (but not limited to) Oxidised Cellulose Gauze for use in specialised surgical areas and Gelatin Sponge (application and implantable)
Tenders are invited for Supply of absorable gelatin sponge u.s.p.
Should not stick to glove.,Absorbable gelatin sponge with 0.05 cms thickness,Absorbable gelatin in powder form,Polymerised gelatin in flowable form ,Cervical (disc) spacer of various sizes, titanium,Artificial cenical disc implant: two-piece.
Contract notice: deliveries of medical supplies (including cannulas, needles, syringes, central punctures, vascular ports, specialist needles), paraffin granulated, absorbent gelatin sponges
According to the loss outcomes of ossicles, the ossicular chain was reconstructed and artificial ossicles were fixed by antibiotic gelatin sponges (Fig.3).
The cells were placed in gelatin sponges designed to fill induced defects in the animals' skulls.