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(Beta) Limit dextrin is the remaining polymer produced by enzymatic hydrolysis of amylopectin with beta amylase, which cannot hydrolyse the alpha-1,6 bonds at branch points. (Alpha) Limit dextrin is a short chained branched amylopectin remnant, produced by hydrolysis of amylopectin with alpha amylase.
β-Cyclodextrin sometimes abbreviated as β-CD, is a heptasaccharide derived from glucose.The α- (alpha), β- (beta), and γ- (gamma) cyclodextrins correspond to six, seven, and eight glucose units, respectively. β-Cyclodextrin is the most used natural cyclodextrin in marketed medicines. [2]
β (beta)-cyclodextrin: 7 glucose subunits; γ (gamma)-cyclodextrin: 8 glucose subunits; The largest well-characterized cyclodextrin contains 32 1,4-anhydroglucopyranoside units. Poorly-characterized mixtures, containing at least 150-membered cyclic oligosaccharides are also known.
Limit dextrinase (EC 3.2.1.142, R-enzyme, amylopectin-1,6-glucosidase, dextrin alpha-1,6-glucanohydrolase) is an enzyme with systematic name dextrin 6-alpha-glucanohydrolase. [1] [2] This enzyme catalyses the hydrolysis of (1->6)-alpha-D-glucosidic linkages in alpha- and beta-limits dextrins of amylopectin and glycogen, in amylopectin and pullulan.
α-Cyclodextrin (alpha-cyclodextrin), sometimes abbreviated as α-CD, is a hexasaccharide derived from glucose.It is related to the β- (beta) and γ- (gamma) cyclodextrins, which contain seven and eight glucose units, respectively.
α-Amylase is an enzyme (EC 3.2.1.1; systematic name 4-α-D-glucan glucanohydrolase) that hydrolyses α bonds of large, α-linked polysaccharides, such as starch and glycogen, yielding shorter chains thereof, dextrins, and maltose, through the following biochemical process: [2]
γ-Cyclodextrins has the largest cavity size between natural cyclodextrin, thus, it is well-suited to accommodate larger biomolecules and other guests.
In enzymology, a cyclomaltodextrin glucanotransferase (also cyclodextrin glycosyl transferase or CGTase for short) (EC 2.4.1.19) is an enzyme that catalyzes the chemical reaction of cyclizing part of a 1,4-alpha-D-glucan molecule through the formation of a 1,4-alpha-D-glucosidic bond.