The effects of ethanol concentration (0%-100%, v/v), solid-to-solvent ratio (1:10-1:60, w/v) and extraction time (30-180 min) on the extraction of polyphenols from agarwood (Aquilaria crassna) were examined. Total phenolic content (TPC), total flavonoid content (TFC) and total flavanol (TF) assays and HPLC-DAD were used for the determination and quantification of polyphenols, flavanol gallates ...

In the title mol-ecule {systematic name: (5S)-5-[(β-d-gluco-pyranos-yloxy)meth-yl]furan-2(5H)-one}, C(11)H(16)O(8), the five-membered ring is essentially planar, the maximum deviation being 0.0151 (13) Å for the O atom. The six-membered ring adopts a chair conformation with puckering parameters Q = 0.581 (2) Å, θ = 9.0 (2)° and ϕ = 39.7 (13)°, and with all of the substituents of the glucoside u...

Lifetime measurements of normal deformed states in 165 71Lu K. Andgren,1,2,∗ Zs. Podolyák,1 A. Dewald,3 F. R. Xu,4 A. Algora,5,6 M. Axiotis,7 D. Bazzacco,8 P. G. Bizzeti,9 A. M. Bizzeti-Sona,9 B. Cederwall,2 G. de Angelis,7 E. Farnea,7 A. Fitzler,10 A. Gadea,7 W. Gelletly,1 S. Lunardi,8 O. Möller,10 N. Marginean,7 T. Martinez,7 T. Pissulla,10 C. Rusu,7 C. A. Ur,8 R. Venturelli,8 P. M. Walker,1 ...

Xanthurenic acid 8-o-β-d-glucoside is an endogenous derivative of tryptophan metabolism, isolated from urine of patients with chronic renal disease. This compound was suggested previously to act as a natriuretic hormone based on its ability to block short circuit currents in a frog skin assay and to induce a sustained natriuresis when injected into rats (C. D. Cain et al., Proc. Natl. Acad. Sci...

N, N΄-3, 4-di(methylamino)-1, 2, 5-oxadiazole (1f) was prepared by dehydration of N, N΄-3, 4-di(methylamino)glyoxime (2f) in aqueous potassium hydroxid at 170-180 ˚C. Under similar conditions N, N΄-3, 4-di(benzylamino)-1, 2, 5-oxadiazole (1c) and N, N΄-3, 4-di(isopropylamino)...

Bacteria have various ways to sense environmental signals and to adapt their behavior and physiology through different signaling systems. Secondary messenger signaling, amplified by enzymatic activity, rapidly transmits a signal in the cell resulting in allosteric functional control. Cyclic diguanosine monophosphate (c-di-GMP) is a novel global secondary messenger, that is found exclusively in ...

Isoflavones contained in the root and flower of Kudzu (Pueraria lobata and related species) are suggested to be the critical component for its effects. Although metabolism of soy isoflavones has been well studied, the composition of isoflavones found in Kudzu is completely different from that of soy isoflavones. In the present study, we investigated whether isoflavones found in the flower of Pu...

In the polymeric title complex, [Fe(C(16)H(8)O(8))(C(10)H(8)N(2))(2)](n), the iron(II) cation is coordinated by four O atoms from three different 4,4'-dicarboxybiphenyl-3,3'-di-carboxyl-ate ligands and two N atoms from two 4,4'-bipyridine ligands in a distorted octa-hedral geometry. The 4,4'-dicarboxybiphenyl-3,3'-di-carboxyl-ate ligands bridge adjacent cations, forming chains parallel to the c...

Galectins are a galactoside specific subclass of carbohydrate binding proteins (lectins) involved in various cellular activities, certain cancers, infections, inflammations, and many other biological processes. The molecular basis for the selectivity galectins is well-documented revolves around appropriate interaction complementarity: an aromatic residue C−H⋅⋅⋅π interactions polar residues (cha...