amylase

(redirected from Amyloglucosidase)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to Amyloglucosidase: amylase, glucoamylase

amylase

 [am´ĭ-lās]
an enzyme that catalyzes the hydrolysis of starch into simpler compounds. The α-amylases occur in animals and include pancreatic and salivary amylase; the β-amylases occur in higher plants. Measurement of serum α-amylase activity is an important diagnostic test for acute and chronic pancreatitis.

am·y·lase

(am'il-ās),
One of a group of amylolytic enzymes that cleave starch, glycogen, and related 1,4-α-glucans.

amylase

(ăm′ə-lās′, -lāz′)
n.
Any of a group of enzymes that catalyze the hydrolysis of starch to sugars. In humans, amylases are produced in the salivary glands and the pancreas.

amylase

An enzyme synthesised in the pancreas and salivary glands and secreted in the GI tract which digests starch and glycogen. It is measured in patients with suspected pancreatitis: serum and urine levels peak 4–8 hours after onset of acute pancreatitis, and normalise within 48–72 hours. Parotitis due to mumps or radiation therapy also increases serum amylase; cases of increased serum amylase without obvious pancreatitis or parotitis require quantification of amylase isoenzymes.
 
Amylase increased in
Acute pancreatitis; obstruction of common bile duct, pancreatic duct or ampulla of Vater; pancreatic injury from perforated peptic ulcer; pancreatic cancer; acute salivary gland disease.

Amylase reduced in
Chronic pancreatitis, pancreatic cancer, cirrhosis, hepatitis, eclampsia.

amylase

Clinical chemistry An enzyme synthesized in the pancreas and salivary glands and secreted in the GI tract, which digests starch and glycogen; amylase is measured in Pts with suspected pancreatitis; serum and urine levels peak 4-8 hrs after onset of acute pancreatitis, and normalize within 48-72 hrs; parotitis due to mumps or radiation therapy also ↑ serum amylase; in cases of ↑ serum amylase without pancreatitis or parotitis, requires quantification of amylase isoenzymes Ref range Varies by laboratory; 25-90 U/L, serum; 4-30 U/2 hrs, urine; amylase is ↑ in acute pancreatitis, obstruction of common bile duct, pancreatic duct or ampule of Vater, pancreatic injury from perforated peptic ulcer, acute salivary gland disease; amylase is ↓ in chronic pancreatitis, pancreatic CA, cirrhosis, hepatitis, eclampsia. See Macroamylase.

am·y·lase

(am'il-ās)
One of a group of amylolytic enzymes that cleave starch, glycogen, and related 1,4-α-glucans.

amylase

An ENZYME that converts starch to simpler carbohydrates such as disaccharides and small polysaccharides.
Amylaseclick for a larger image
Fig. 33 Amylase . The splitting of starch to form maltose.

amylase

a digestive enzyme which enables starch to be split by hydrolysis into smaller subunits of MALTOSE, usually in alkaline conditions (see Fig. 33 ).

Amylases are found in the saliva of most mammals (and were previously called ptyalin). Their functioning is limited to the brief time that food remains in the mouth. Once food is swallowed, the acid stomach conditions prevent further amylase activity. The principal location of starch digestion is in the duodenum, where pancreatic amylase is poured into the gut lumen from the pancreas as part of the pancreatic juice; pancreatic amylase has a greater digestive efficiency than salivary amylase. Amylases are common in plants, particularly in association with the starch stores of seeds and underground perennating organs such as rhizomes, tubers and taproots. Amylases are also produced by MICROORGANISMS such as BACILLUS, STREPTOMYCES and the fungus Aspergillus, and are used in the food industry.

Amylase

A digestive enzyme made primarily by the pancreas and salivary glands.
Mentioned in: Amylase Tests, Lipase Test
References in periodicals archive ?
After cooling, contents were again incubated with addition of 100 [micro]L protease enzyme at 60[degrees]C for 30 min and then the contents were incubated with amyloglucosidase enzyme at 60[degrees]C for 30 min.
A 10 [micro]L aliquot (or 20 [micro]L aliquot for amyloglucosidase treated samples) of the labelled OS solution was injected onto the guard cartridge under isocratic conditions (98% A) at a flow rate of 1 mL/min for 7.5 min.
Next, 0.1 mL of amyloglucosidase (NaAc 3200U/ mL buffer/HAc, pH = 4.75) was added to the tubes and after the addition they were incubated in a water bath at 50[degrees]C for 30 minutes under constant agitation.
"He found such an enzyme, amyloglucosidase. Devoting a year to this project, he wound up with the first low-calorie beer."
Starch was digested by adding 0.2 U of amyloglucosidase (Sigma Chemical Co., St.
Those proteins were amyloglucosidase from Aspergillus niger (89/70 kDa; pI 3.8), ovalbumin (45 kDa; pI 5.1), carbonic anhydrase from human erythrocytes (29 kDa; pI 7.0), and myoglobin from horse heart (17 kDa; pI 7.6).
Introduction; Notes to the reader; Joint FAO/WHO Expert Committee on Food Additives, 59th Meeting, Geneva, 4-13 June 2002; Section A: Principles governing the establishment and revision of specifications; Section B: Specifications of certain food additives (uses other than as flavouring agents); Alitame; Amyloglucosidase from Aspergillus niger, var.; Cross-linked sodium carboxymethyl cellulose; Mineral oil (medium and low viscosity); Salatrim; Section C: Limits for heavy metals in the specifications of certain food additives; Section D: Specifications of certain flavouring agents; Index to Section D: Specifications of certain flavouring agents.
Brewers discovered that an enzyme called amyloglucosidase could render all the dextrins (fermentable sugars) in beer completely fermentabele The result reduced the beer's carbohydrate content (calories) by using all the sugars, but also raised its alcohol content slightly above that of regular beer in addition, a byproduct of using the enzyme is that it caused the alcohol to be more easily absorbed into the bloodstream.
First, they quickly hydrolyzed the fiber with hot, mild acid; then they quickly cooled it and added a mixture of cellulase and amyloglucosidase enzymes before further hydrolysis.
Solutions were cleaned with insoluble PVP and were converted to glucose using amyloglucosidase (Boehringer Mannheim, Indianapolis, Indiana) and amylase (Sigma Chemical Company, St.
- The principle of this test was to hydrolyze the glycogen with amyloglucosidase and to quantify the resulting glucose with a standard serum glucose assay that employs glucose oxidase and measures a redox change.