What's the difference between maltose and starch?

Maltose


Definition:

  • (n.) A crystalline sugar formed from starch by the action of distance of malt, and the amylolytic ferment of saliva and pancreatic juice. It resembles dextrose, but rotates the plane of polarized light further to the right and possesses a lower cupric oxide reducing power.

Example Sentences:

  • (1) One surprising finding is that the MAL1g-encoded maltose permease exhibits little sequence homology to the MAL1-encoded maltose permease though they appear to be functionally homologous.
  • (2) To gain further insight into the side chain requirement at position 177 that confers maltose recognition, further substitutions of isoleucine, leucine, phenylalanine, proline, and serine have been made via site-directed mutagenesis.
  • (3) Whereas fructokinase I was induced specifically by growth of the organism on sucrose, fructokinase II was derepressed during growth on ribose, galactose, maltose, and lactulose.
  • (4) After 2 hr of reperfusion, maltose absorption and weight gain of small intestine were determined.
  • (5) Maltose-positive strains were only demonstrable in birds with wounds inflicted by cats.
  • (6) In acting upon beta-D-glucosyl fluoride, maltose phosphorylase was found to use alpha-D-glucose as a cosubstrate but not beta-D-glucose or other close analogs (e.g., alpha-D-glucosyl fluoride) lacking an axial 1-OH group.
  • (7) One class II mutant carried a Tn10 insertion in or close to malT whereas in the remaining class II mutants the insertions were located at least 4 kb upstream of pulA in a region which may define a new regulatory locus of the maltose operon.
  • (8) The Cs cob.1 ORF was cloned into the vector pMALcr1 and over-expressed as a hybrid protein fused to maltose-binding protein (MBP).
  • (9) Monitoring of the intestinal allograft is possible with the combination of a function test (maltose absorption, glucose absorption, or any other function test) and repeated graft biopsy.
  • (10) Relocation of this segment, in effect, opens the D-glucose channel; maltose and cytochalasin B would thus inhibit transport by mechanisms which block this positional change.
  • (11) The action pattern on amylose, soluble starch, and glycogen showed that the products were maltose and maltotriose.
  • (12) The concentration of free glucose in the intestinal lumen during maltose absorption is not high enough to account for the rates of glucose transport observed.
  • (13) Mutants in malF and malK are defective in maltose transport at low concentrations as well as high concentrations, as previously shown, but are essentially normal in maltose taxis.
  • (14) Fibers were selected for this experiment, only if they responded to 1.0 M sucrose or 1.0 M maltose and they responded poorly to 0.1 M NaCl.
  • (15) Under our experimental conditions 20 to 30% of the administered maltose have been excreted and 7.5 to 23.4% have been oxidized within 8 hours.
  • (16) Renal excretion of sugar measures 25-35% of the maltose administered parenterally.
  • (17) Domestic and imported honey samples (115) contained 2.00% maltose and 0.71% isomaltose.
  • (18) SP-D can be selectively and efficiently eluted from isolated rat surfactant with glucose, maltose, and certain other saccharides.
  • (19) Studies were made on the ultraviolet difference-spectra of glucoamylase from Rhizopus niveus [EC 3.2.1.3] specifically produced by the substrate maltose and the inhibitors, glucose, glucono-1: 5-lactone (gluconolactone), methyl beta-D-glucoside, cellubiose, and cyclohexa-, and cyclohepta-amyloses.
  • (20) These results suggest that the structure of the reducing glucose is not important in the binding specificity of maltoporin or maltose-binding protein.

Starch


Definition:

  • (a.) Stiff; precise; rigid.
  • (n.) A widely diffused vegetable substance found especially in seeds, bulbs, and tubers, and extracted (as from potatoes, corn, rice, etc.) as a white, glistening, granular or powdery substance, without taste or smell, and giving a very peculiar creaking sound when rubbed between the fingers. It is used as a food, in the production of commercial grape sugar, for stiffening linen in laundries, in making paste, etc.
  • (n.) Fig.: A stiff, formal manner; formality.
  • (v. t.) To stiffen with starch.

Example Sentences:

  • (1) Glucose release from these samples was highly correlated with starch gelatinization (r2 = .99).
  • (2) It is suggested the participation of glycogen (starch) in the self-oscillatory mechanism of the futile cycle formed by the phosphofructokinase and fructose bisphosphatase reactions may give rise to oscillations with the period of 10(3)-10(4) min, which may serve as the basis for the cell clock.
  • (3) Tissue storage of hydroxyethyl starch (HES), a widely used artificial colloid, has been reported.
  • (4) Therefore, we changed from dextran 40 to hydroxyethyl starch in 1987 for the treatment of several otoneurological disorders.
  • (5) The present experiments examined flavor differences among starches.
  • (6) A small number of children with protracted diarrhoea, who have severe mucosal injury may not be able to handle even starch and may require diets based on short chain glucose polymers.
  • (7) Agarose gel electrophoresis demonstrated that the fast and slow components obtained on starch block electrophoresis corresponded to the pre-beta and late pre-beta band respectively.
  • (8) Dry matter and starch intakes were greater when corn was fed than when barley was fed.
  • (9) In a starch block, migration was toward the cathode at pH 8.0.
  • (10) Slowing starch digestion by inhibiting amylase activity in the intestinal lumen should improve postprandial carbohydrate tolerance in patients with diabetes mellitus.
  • (11) This study uses breath hydrogen analysis, a sensitive method for detecting the passage of starch into the colon, to determine if a potent amylase inhibitor is capable of producing carbohydrate malabsorption.
  • (12) Concentrates of amyloid substance derived from organs of 10 human patients representing a variety of clinical entities were characterized according to their amino acid compositions, their electrophoretic constituents mobile in urea-starch gel at pH 3 and their stability with respect to the binding of Congo red in the pH interval 9-12.5.
  • (13) The 13CO2 starch breath test is an attractive test for the study of factors affecting carbohydrate assimilation.
  • (14) Production of milk and milk fat was not affected, but yields of CP and SNF were decreased when additional starch was fed to cows.
  • (15) The effect of two doses (3 mg and 10 mg) of the inhibitor of pancreatic alpha-amylase trestatin on the metabolism of an oral load of 75 g of starch was observed in healthy human subjects.
  • (16) These were analyzed for: tannins, trypsin inhibitors, hemagglutinins (with cow, sheep, and human erythrocytes), damaged starch, available lysine, protein quality (by the NPR method), and true digestibility.
  • (17) Two-day-old poults were fed diets containing no added fat [44.6% starch, 2.2% ether extract by weight (HC)], 10% tallow (T), or 10% corn oil [(CO) 29.0% starch, 10.9% ether extract].
  • (18) We have examined under a variety of conditions the ability of potato starch phosphorylase to cause exchange of the ester and phosphoryl oxygens of alpha-D-glucopyranose 1-phosphate (Glc-1-P).
  • (19) In contrast, foci formed by 3-4 dysplastic crypts were decreased by the starch diet (P less than 0.05).
  • (20) Several experiments examined the preference of adult female rats for starch and starch-derived polysaccnarides using short- and long-term two-choice tests.