Dextrins regulations

We subject envelope and stamp adhesives to stringent safety requirements. Since we re likely to swallow traces of the stuff, we have to regulate it as a food. Gum arable from the acacia tree, dextrin from corn starch, and the water soluble resin polyvinyl alcohol are the adhesives we use most often. We also... 

Lead azide crystals should be spherical in shape, opaque in appearance and less than 0.07 mm in diameter. Dextrin is added as a colloiding agent, which prevents the formation of large, sensitive crystals of lead azide and regulates, to some extent, the shape of the crystals. 

In America, the main source material of sugars and syrups from starch is corn starch. The starch is hydrolyzed to simpler chemical substances through the action of dilute acid—generally hydrochloric acid—under heat and pressure in a converter. The products of hydrolysis products are dextrin, maltose, and dextrose. As the hydrolysis progresses, the content of dextrose increases at the expense of the others. The conditions of the conversion are regulated according to the amount of dextrose required in the product to be produced. 

Modifiers or regulators constitute another class of flotation reagents that are used to control the process. In potash flotation, slimes depressants such as starch, guar gum, dextrine, and synthetic compounds are typically used [99[. 

Many recombinant strains are based on the gene regulation from an amylase, and some of these strains may have a need for dextrin as an inducer or activator of the promoter of the gene to obtain maximal production of the desired enzyme. 

According to the Polish Standard PN-87/A-74820 modified starch is native starch processed in a mode that changes one or more of its initial physical or chemical properties [59], They include roasted starches (e.g., white and yeUow dextrins), acidic and alkaline starches (treated with respectively acids and bases), bleached starches, enzymatically modified starches, physically modified starches (usually heat-treated), and chanically modified starches (via incorporation of specified chemical compounds or via oxidation). These starches, except for the chanically modified ones, are acknowledged by legal regulations as native and are not treated as additives. Hence, the additive substances include the chemically modified starches. 

Dextrinated Lead Azide (DLA) is also known as type I lead azide. Dextrin is used as a colloiding agent which prevents the formation of large, sensitive crystals and regulates crystal shape during manufacture. 

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