diastase


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diastase

(dī`əstās'): see amylaseamylase
, 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.
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diastase

[′di·ə‚stās]
(biochemistry)
An enzyme that catalyzes the hydrolysis of starch to maltose. Also known as vegetable diastase.

diastase

any of a group of enzymes that hydrolyse starch to maltose. They are present in germinated barley and in the pancreas
References in periodicals archive ?
Mean results for physicochemical analysis (moisture content, density, pH, total acidity, electric conductivity, sugar, diastase index, protein content) are summarised in Table 4.
8,9) However, subsequent studies also show that the atypical keratinocytes in these tumors stained positive with periodic acid-Schiff, and that the positivity was removed after diastase digestion; this was consistent with the neoplastic cells containing glycogen and no neutral mucopolysaccharides.
Tissue glycoproteins of the gut diverticula and the ducts of silk glands were resistant to diastase digestion and required periodic acid hydrolysis to localize reaction products with the Schiff reagent for aldehydes.
Histochemical stains including periodic acid--Schiff (PAS) with and without diastase predigestion and mucicarmine, and immunohistochemical studies using antibodies against broad spectrum keratin (1:50; DAKO Corporation, Carpinteria, CA, USA), epithelial membrane antigen (EMA, 1:80; DAKO MS, Glostrup, Denmark), and carcinoembrionic antigen (CEA, 1:50; Novocastra Laboratories, Newcastle upon Tyne, UK) were also performed.
The enzyme diastase in malted barley was used in brewing to convert cereal starches to fermentable sugars.
Malt is made by sprouting moistened barley, and the diastase of the malt can change more starch into sugar and dextrin than is contained in the malt, so one part of malt is added to five parts of boiled, mashed rye or barley and all of the starch in both grain and malt is changed.
This means they can be used at virtually any level of inclusion without creating problems of dough stickiness associated with diastase activity.
Amino acids found in this plant include lysine, arginine, hystidine, adenine, Cysteine, phenylalanine, Asparagines, carbohydrates, diastase, ketones, phosphoric acid, calcium carbonate, and A, E, C and K vitamins.
Histochemically, neither Alcian blue nor periodic acid-Schiffstaining, with or without diastase positivity, was demonstrated in the neoplastic cells.
2,3,8-10,16,18) The cytoplasm of the cells is abundant, granular, eosinophilic, PAS-positive, and diastase resistant.
A negative diastase control was used to obtain more specificity in detecting glycogen (Humason 1972), and a positive control of trout mucus was initially stained with samples.
Direct) 20 1607 Alkaline Phosphatase 18 0008 Urea 56 160Uric acid 9 17 28010 Amylase / Diastase 14 160Creatinine 11 61 920Triglycerides 12 21 120Total protein 13 11 04014 protein in the urine and CSF 15 36015 Albumin 8 160Calcium 16 12 00017 Phosphorus 8 16018 Iron 12 48019 gamma-glutamyl 12 68020 Magnesium 10 20021 TIBC 4 08022 Troponin I 22 68023 CK-MB mass 6 08024 TSH 23 40025 5 040 glycated hemoglobinHigh sensitivity CRP 26 52 40027 Ethanol 3 00028 ISE (Na, K, Cl) 241 80029 IgE mono 70030 Antistreptollisyna (aslo Latex) 400Rheumatoid factor 31 1 30032 Bilirubin direct 4 16033 LDH 4 50034 Lactic acid 1 50035 NT-proBNP 4 560FT4 36 12 000FT3 37 12 00038.