Tragacanth and acacia

A specific method was used with some classic hydrogel formers such as tragacanth and Acacia. By using a specific and exactly defined ratio of hydrogel agent to water, a thick gel was created. By further diluting with water the desired gel was obtained. This method is largely abandoned. 

Carbomer, carmellose, microcrystalline cellulose, sodium carboxymethylcellulose, povidone, sodium alginate, tragacanth, and xanthan gum Acacia and methylcellulose, glycerol esters, polysorbates and sorbitan esters, fatty acids, sodium stearate, carbomer Macrogol esters, polyvinyl alcohol, and glycerides... 

Protective colloids can be divided into synthetic and natural materials. Table 3 classifies the pharmaceutical gums, thickeners, and other hydrophilic polymers according to their origins [72]. Protective colloids of natural origin, such as gelatin, acacia, and tragacanth, have... 

Natural Plant Tree and shrub exudates Karaya gum Tragacanth gum Gum acacia... 

Gum arabic Gum kadaya Locust bean Tamarind Tragacanth Acacia segalencis and other acacia trees, native to eastern Africa Sterculia urens trees from India Seeds of carob (Ceratonia siliqua) trees Seeds of tamarind (Tamarindus indica) trees Astragalus gummifer shrubs from southern Europe and the Middle East... 

The widely used preparations are gum acacia and tragacanth. vi. Tannins are nonnitrogenous constituents of plant. Chemically they are phenolic derivatives and are characterized by their astringent action. Tannins are generally employed in the treatment of diarrhoea and burns. The important plants which contains tannins are Amla, Behera, Hirda (in combination form Triphala ), Black catechu and Ashoka bark. 

Polysorbates or sorbitan esters, acacia, and tragacanth Aluminum magnesium silicate, bentonite, carbomers, cellulose derivatives, gelatin, pectin, polyvinyl alcohol, alginates, starch, and xanthan gum Borates, citrates, acetates, and phosphates... 

D. Oral suspensions Additives are very similar to C, only flavorings are included along with suspending agents such as the gums, tragacanth, acacia, and bentonite. 

Phenylis Salicylas, Phenyl Salicylate, Salol, C13H10O3, is the salicylic ester of phenyl, and occurs as a white, crystalline powder, odorless and almost tasteless, nearly insoluble in water, soluble in 10 parts alcohol, and very soluble in ether, chloroform, and oils. On warming with an alkali, it splits up into salicylic acid 60, and phenol 40, frequently repeated, in compressed tablets or in cachets, or suspended by mucilage of acacia or of tragacanth. 

Tragacanth is widely used as a natural emulsifier in conjunction with acacia and is an effective viscosity modifier for suspension formulations. It contains a variety of methoxylated acids that upon contact with water become a gel. At around pH 5, it renders the maximum stable viscosity due to aging even though the maximum viscosity occurs at pH 8 with the freshly prepared solution. 

The water present in the gel framework can be completely removed with some gelling agents. Gelatin sheets, acacia tears, and tragacanth ribbons are generally prepared by removal of water from their respective gel matrix. These dehydrated gel frameworks are called as xerogels. 

This material is used in small quantities in confectionery, particularly in making lozenges. It is hard to find an alternative product that worksas well, although a mixture of gum acacia and gum tragacanth is sometimes... 

Try a mixture of gum acacia and gum tragacanth, as in commercially produced lozenges. 

---