15718
D -(+)-麦芽糖 一水合物
别名:
4-O-α-D-吡喃葡糖基-D-葡萄糖, 麦芽糖
旋光性
[α]20/D +137±2°, c = 10% in H2O (calc.of H2O free subst.)
杂质
≤0.001% heavy metals (as Pb)
5-6% water (Karl Fischer)
灼烧残渣
≤0.05% (as SO4)
溶解性
H2O: soluble 180 g/L at 20 °C
痕量阴离子
chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg
SMILES字符串
O.OC[C@@H](O)[C@@H](O[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)C=O
InChI
1S/C12H22O11.H2O/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12;/h1,4-12,14-21H,2-3H2;1H2/t4-,5+,6+,7+,8+,9-,10+,11+,12+;/m0./s1
InChI key
HBDJFVFTHLOSDW-DNDLZOGFSA-N
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应用
D-Maltose has been used for preparing Diamond′s modified TYM medium which is utilized for studying the pharmacodynamic impacts of metronidazole on Trichomonas vaginalis by using time-kill assay. It has also been used as a substrate for the identification, differentiation and characterization of enzymes such as maltase(s); maltose alpha-D-glucosyltransferase(s); maltose-transporting ATPase(s); maltose O-acetyltransferase(s), maltose epimerase(s) and phosphorylase(s). Further, D-Maltose has been used to study maltose-binding proteins and disaccharide transport systems. Other application of D-maltose was in disproportionation activity enzyme assays.
生化/生理作用
D-Maltose is broken down in the presence of beta-amylases to produce two molecule of glucose followed by glucose metabolism and release of energy. The malP and malQ genes in bacterial genome produce essential enzymes required for maltose metabolism. Beta-amylases are present in plants and bacteria whereas maltase present in humans breaks down the maltose in diet.
Maltose is a disaccharide containing two glucose molecules with an α(1→4) glycosidic linkage. Maltose can be derived from starch in food through the action of amylase. Maltose can be found in many food products, including beer, cereals, and pasta.
储存分类代码
13 - Non Combustible Solids
WGK
WGK 1
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
新产品
此项目有
B A van der Veen et al.
The Journal of biological chemistry, 276(48), 44557-44562 (2001-09-14)
Cyclodextrin-glycosyltransferases (CGTases) (EC ) preferably catalyze transglycosylation reactions with glucosyl residues as acceptor, whereas the homologous alpha-amylases catalyze hydrolysis reactions using water as acceptor. This difference in reaction specificity is most likely caused by the acceptor binding site. To investigate
B A van der Veen et al.
European journal of biochemistry, 267(3), 658-665 (2000-01-29)
Cyclodextrin glycosyltransferase (CGTase) catalyzes three transglycosylation reactions via a double displacement mechanism involving a covalent enzyme-intermediate complex (substituted-enzyme intermediate). Characterization of the three transglycosylation reactions, however, revealed that they differ in their kinetic mechanisms. Disproportionation (cleavage of an alpha-glycosidic bond
G M Gray
The Journal of nutrition, 122(1), 172-177 (1992-01-01)
Starch digestion and absorption is augmented appreciably by physical processing of grain or legume and by heating to 100 degrees C for several minutes before its ingestion. Starch, a polysaccharide composed of alpha 1,4-linked glucose units (amylose) and alpha 1,4-1,6-linked
D E Nix et al.
Antimicrobial agents and chemotherapy, 39(8), 1848-1852 (1995-08-01)
The pharmacodynamic effects of metronidazole on Trichomonas vaginalis have been poorly characterized. The present in vitro study was performed to characterize the relationship between killing of trichomonads and metronidazole exposure (metronidazole concentration and time of exposure). Five laboratory strains and
W Boos et al.
Microbiology and molecular biology reviews : MMBR, 62(1), 204-229 (1998-04-08)
The maltose system of Escherichia coli offers an unusually rich set of enzymes, transporters, and regulators as objects of study. This system is responsible for the uptake and metabolism of glucose polymers (maltodextrins), which must be a preferred class of
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