|
Find more facts and information on our topic page about
amylase
|
amylase
The Columbia Encyclopedia, Sixth Edition
amylase , enzyme having physiological, commercial, and historical significance, also called diastase. It is found in both plants and animals. Amylase was purified (1835) from malt by Anselme Payen and Jean Persoz. Their work led them to suspect that similar substances, now known as enzymes, might be involved in biochemical processes. Amylase hydrolyzes starch , glycogen , and dextrin to form in all three instances glucose , maltose , and the limit-dextrins. Salivary amylase is known as ptyalin; although humans have this enzyme in their saliva, some mammals, such as horses, dogs, and cats, do not. Ptyalin begins polysaccharide digestion in the mouth; the process is completed in the small intestine by the pancreatic amylase, sometimes called amylopsin. The amylase of malt digests barley starch to the disaccharides that are attacked by yeast in the fermentation process.
Author not available, AMYLASE.,
The Columbia Encyclopedia, Sixth Edition 2008
Find more facts and information related to the .
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
Related newspaper, magazine, and trade journal articles from HighBeam Research
(Including press releases, facts, information, and biographies)
|
Differentiation of [beta]-amylase phenotypes in cultivated barley.(Crop Breeding, Genetics & Cytology)
; ...In the grain of malting barley, [beta]-amylase ([alpha]-1,4-glucan maltohydrolase; EC...enzymes. During malting, not only [beta]-amylase activity but also its thermostability...role. The genetic variation in [beta]-amylase thermostability has been studied by different...
Read more
|
|
Correlation Between Salivary [alpha]-Amylase Activity and Pain Scale in Patients With Chronic Pain
; ...suggest that elevated salivary α-amylase may reflect increased physical stress...close association between salivary α-amylase and plasma norepinephrine under stressful...usefulness of a portable salivary α-amylase analyzer as an objective biomarker of...
Read more
|
|
[beta]-Amylase Induction and the Protective Role of Maltose during Temperature Shock1
; ...number of studies have demonstrated [beta]-amylase induction in response to abiotic stress...and cold shock at 5C showed that [beta]-amylase induction correlated with maltose accumulation...relevant concentrations. Therefore, [beta]-amylase induction and the resultant maltose accumulation...
Read more
|
 "St. Louis Post-Dispatch (St. Louis, MO)")
|
Fruit fly spit leads to test for sleepiness.
; ...flies and humans. The indicator _ a protein called amylase _ and other markers could some day be used to detect...kept popping up in the experiments is a protein called amylase. Amylase is an enzyme found in saliva that helps break down...
Read more
|
|
|
Redox Regulation of a Novel Plastid-Targeted [beta]-Amylase of Arabidopsis1[W]
; ...Arabidopsis thaliana) encode for β-amylase isozymes. Six members of the family are...the latter, chloroplast-targeted β-amylase (At4g17090) and thioredoxin-regulated β-amylase (TR-BAMY; At3g23920; this work) are experimentally...
Read more
|
|
Clinical utility of amylase and lipase.(Answering your questions)
; ...pancreatitis, sometimes the doctors order amylase, sometimes they order lipase, and sometimes...each other? When should a physician order amylase, and when should he order lipase? Are they STAT tests? A The clinical use of amylase, lipase, and trypsin assays to diagnose...
Read more
|
|
|
Characterization of barley tissue-ubiquitous [beta]-amylase2 and effects of the single nucleotide polymorphisms on the enzyme's thermostability.
; [beta]-AMYLASES (EC 3.2.1.2) are exohydrolases that cleave...ends of a variety of polyglucans. [beta]-Amylase is one of the four carbohydrases involved...during seed germination. Similarly, [beta]-amylase functions to degrade starch in the industrial...
Read more
|
|
Effects of Dietary [alpha]-Amylase on Metabolism and Performance of Transition Dairy Cows*,[dagger]
; ...design to determine the effect of feeding α-amylase during the transition period on rumen fermentation...diet or the control diet supplemented with α-amylase (662 fungal amylase units per gram, AMA) at 0.1% of diet dry matter...
Read more
|
|
[beta]-AMYLASE4, a Noncatalytic Protein Required for Starch Breakdown, Acts Upstream of Three Active [beta]-Amylases in Arabidopsis Chloroplasts(W)(OA)
; ...work investigated the roles of β-amylases in the breakdown of leaf starch. Of the nine β-amylase (BAM)-like proteins encoded in the Arabidopsis...BAM2, and BAM3 had measurable β-amylase activity but BAM4 did not. BAM4 has multiple...
Read more
|
|
Effect of Different Enzymes on the Textural Stability of Shelf-Stable Bread
; ABSTRACT Three enzyme systems (2 amylase-based and 1 protease-based) were tested...and exhibited multiple transitions. Both amylase preparations in the presence of glycerol...al 2001). The effectiveness of α-amylases has been attributed to the inhibition...
Read more
|
For more facts and information,
see all related premium articles
Related entries from encyclopedias, dictionaries, and thesauruses
|
amylase
amylase Any of a group of closely related enzymes that degrade starch, glycogen, and other polysaccharides. Plants contain both α- and β-amylases; the name diastase is given to the component of malt containing β-amylase, important in the brewing industry. Animals possess only ...
Read more
|
|
amylases
amylases Enzymes that hydrolyse starch and glycogen . α‐Amylase (dextrinogenic amylase or diastase) acts to produce small dextrin fragments from starch, while β‐amylase (maltogenic...
Read more
|
|
amylase
amylase Digestive enzyme secreted by the salivary glands (salivary amylase) and the pancreas (pancreatic amylase. It aids digestion by breaking down starch into maltose (a disaccharide) and then glucose (a monosaccharide).
Read more
|
|
amylase
amylase A member of a group of enzymes that hydrolyse starch or glycogen by the splitting of glycosidic bonds, so giving rise to the sugars glucose, dextrin, or maltose. Amylases are widely distributed in plants and animals, occurring in microorganisms and, for example, in pancreatic juices and salivary...
Read more
|
|
amylase
amylase A member of a group of enzymes that hydrolyse (see HYDROLYSIS ) starch or glycogen by the splitting of glucosidic bonds (see GLUCOSIDE ), so giving rise to the sugars glucose , dextrin, or maltose. They are widely distributed in plants and animals, but occur particularly richly in germinating seeds e.g. those of ...
Read more
|
