| Edible Gelatins |
Edible Gelatins
Commercial gelatins vary from80 to 260 Bloom grams and, except for
specialty items, are free of added colors, flavors, preservatives,
and chemical additives. Gelatin is a gen
erally recognized as safe (GRAS) food gelatin's most desirable properties are its melt-in-the-mouth characteristics and its ability to form thermoreversible gels. In addition, gelatin is relatively unaffected by ionic strength and is stable over a broad pH range. Gelatin is preferred in many applications for its clarity and bland flavor.
Confectionery
Confections are typically made from a base of sugar, corn syrup and
water. To this base is added flavor, color and texture modifiers.
Gelatin is widely used in confections because it foams, gels, or
solidifies into a piece that dissolves slowly or melts in the
mouth.
Confections such as gummi bears contain a relatively high percentage of gelatin. These candies dissolve more slowly thus lengthening the enjoyment of the candy while smoothing the flavor.
Gelatin is used in whipped confections such as marshmallows where it serves to lower the surface tension of the syrup, stabilize the foam through increased viscosity, set the foam via gelation, and prevent sugar crystallization.
Gelatin is used in foamed confections at a 2-7% level, depending upon the desired texture. Gummi foams use about 7% of a 200 - 275 Bloom gelatin. Marshmallow producers generally use 2.5% of a 250 Bloom Type A gelatin.
Gelatin Desserts
Gelatin desserts can be traced back to 1845 when a U.S. patent was
issued use for "portable gelatin" for use in desserts. Gelatin
desserts remain popular: the current U.S. market for gelatin
desserts exceeds 100 million pounds annually.
Today's consumers are concerned with caloric intake. Regular gelatin desserts are easy to prepare, pleasant tasting, nutritious, available in a variety of flavors, and contain only 80 calories per half-cup serving. Sugar-free versions are a mere eight calories per serving.
The buffer salts are used to maintain the proper pH for flavor and setting characteristics. Historically, a small amount of salt was added as a flavor enhancer.
Gelatin desserts can be prepared using either Type A or Type B gelatin with Blooms between 175 and 275. The higher the Bloom the less gelatin required for a proper set (i.e. 275 Bloom gelatin will require about 1.3% gelatin while a 175 Bloom gelatin will require 2.0% to obtain an equal set). Sweeteners other than sucrose can be used.
Gelatin in Meats
Gelatin is used to gel aspics, head cheese, souse, chicken rolls,
glazed and canned hams, and jellied meat products of all kinds. The
gelatin functions to absorb meat juices and to give form and
structure to products that would otherwise fall apart. Normal usage
level ranges from 1 to 5% depending upon the type of meat, amount
of broth, gelatin Bloom, and texture desired in the final product.
GDairy products
Gelatin acts as both a texturiser and a stabiliser in many dairy
products, including yoghurts and supreme ice creams. In yoghurts it
helps avoid the floury texture of starches, while in ice creams it
controls the excess formation of ice crystals. In both yoghurt and
ice cream, as with similar dairy desserts or iced confections,
gelatin melting at body temperature provides a smooth creamy
sensation and allows the full release of flavours and aromas.
Beverages
By acting as a coagulant, gelatin can be used to precipitate
impurities during the manufacture of wine, beer, cider and juices.
It has the advantages of unlimited shelf life in its dry form, ease
of handling, rapid preparation and brilliant clarification.
Low fat and 'Lite
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