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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.
The difference between chloroplast and extrachloroplastic starch degradation is in the amylase pathway they prefer; either beta or alpha amylase. For spinach leaves, Alpha-amylase is preferred but for plants/organisms like wheat, barley, peas, etc. the Beta-amylase is preferred. [3]
An inhibitor of alpha-amylase, called phaseolamin, has been tested as a potential diet aid. [10] When used as a food additive, amylase has E number E1100, and may be derived from pig pancreas or mold fungi. Bacilliary amylase is also used in clothing and dishwasher detergents to dissolve starches from fabrics and dishes.
β-Amylase (EC 3.2.1.2, saccharogen amylase, glycogenase) is an enzyme with the systematic name 4-α-D-glucan maltohydrolase. [ 2 ] [ 3 ] [ 4 ] It catalyses the following reaction: Hydrolysis of (1→4)-α- D -glucosidic linkages in polysaccharides so as to remove successive maltose units from the non-reducing ends of the chains
In 1957, two brewing chemists, Thorne and Helm, discovered that the Co 2+ cation was able to stabilize beer foam and to avoid beer overfoaming and gushing. [12] The addition of a tiny amount of cobalt ions in the range 1 – 2 mg/L was effective. Higher concentrations would be toxic and lower ones ineffective.
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]
Alpha is a way to measure excess return, while beta is used to measure the volatility, or risk, of an asset. Beta might also be referred to as the return you can earn by passively owning the market.
Pullulanase (EC 3.2.1.41, limit dextrinase, amylopectin 6-glucanohydrolase, bacterial debranching enzyme, debranching enzyme, α-dextrin endo-1,6-α-glucosidase, R-enzyme, pullulan α-1,6-glucanohydrolase) is a specific kind of glucanase, an amylolytic exoenzyme, that degrades pullulan.
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