Surface-enhanced Raman scattering (SERS) spectroscopy was used in the investigation of the adsorption of folic acid (FA) on the surface of gold nanoparticles (AuNPs) in the absence and presence of surface modifiers hydrochloride acid (HCl) and 1-mercaptoethanol (ME). The proposal for the chemica...

Semiorganic nonlinear optical crystal of L-Glutamic acid hydrochloride (LGHC) was grown from aqueous solution by slow evaporation technique. Single crystal X-ray Diffraction analysis confirms that LGHC crystallizes in orthorhombic system with noncentrosymmetric space group P212121. The powder X-...

In general, CS scaffold is prepared by lyophilizing CS hydrogel which traditionally can be prepared by dissolving CS in acetic acid and crosslinking with dialdehyde. However, this method expresses unpleasant odor and toxicity leading to obstruct the practical applications. Here, the aqueous solu...

A facile synthesis of (−)-8a-epi-swainsonine 2 and 1,4-dideoxy-1,4-imino-l-ribitol (LRB) 4 has been achieved by using the versatile building block 3, which was available from cheap d-glutamic acid. The new forming stereogenic center in synthesis of 2 was constructed by highly selective reduction...

d-Glutamic acid-adding enzyme (MurD) catalyses the essential addition of d-glutamic acid to the cytoplasmic peptidoglycan precursor UDP-N-acetylmuramoyl-l-alanine, and as such it represents an important antibacterial drug-discovery target enzyme. Based on a series of naphthalene-N-sulfonyl-d-Glu...

Recently, microbial polyhydroxyalkanoates (PHA) were proposed as an alternative biofuel, termed 3-hydroxyalkanoate methyl ester (3HAME). PHA is a strong candidate to make biofuels and be used in the fuel additive market today. However, an optimization study of 3HAME from PHA has never been repor...

Fatty acid methyl ester sulfonates, synthesized from renewable plant resources, are an example of green surfactants used in eco-friendly washing detergents. Their fundamental surfactant properties, solid structure, biodegradability, and information for application to laundry detergents are summa...

Water content is one of the most important quality indexes of biodiesel. In this study, the group interaction parameters of UNIFAC model are optimized to improve this model in predicting the solubility of water in fatty acid methyl esters and biodiesel. To determine the binary interaction parame...

The main components of biodiesel are fatty acid methyl esters (FAMEs) or fatty acid ethyl esters (FAEE). Methanol is commonly used as a reference molecule for modeling diesel fuel thermodynamics properties. In this work, experimental density data of the binary mixtures of methanol with three fat...

In this work, experimental density data were reported for six fatty acid methyl esters, including methyl butyrate, methyl valerate, methyl caproate, methyl pelargonate, methyl heptanoate, and methyl caprylate. The densities were measured from 293.15 K to 363.15 K and pressures up to 60 MPa by a ...

Mushroom alkaloids are of a considerable interest as a consequence of their unique secondary metabolites. This work describes the isolation and identification of brotasic acid methyl ester (1) from the fruiting bodies of the mushroom Auricularia sp. After isolation using a series of chromatograp...

Excess collagen fibril accumulation is one of the leading causes for stroke and myocardial infarction, thus inducing interest in identifying and studying the compounds, which inhibits collagen fibril formation. Herein, inhibition of self-assembly of collagen has been studied using syringic acid ...

In this study, 71 phenolic acids and their derivatives were used to investigate the structure–affinity relationship of β-lactoglobulin binding, and the effect of this interaction on antioxidant activity. Based on a fluorescence quenching method, an improved mathematical model was adopted to ca...

The interactions of coffee and bread crust melanoidins with hydroxycinnamic and hydroxybenzoic acids (HCA/HBA) containing different numbers of –OH and –OCH₃ groups localized at different positions on the aromatic ring were investigated. By doing so, mechanism of the interactions was intended t...

Twelve isopropylamine derived supramolecular complexes isopropylamine: (m-toluic acid) [(Hipa)+ ⋅ (mtua−), mtua− = m-toluate] (1), isopropylamine: (p-toluic acid) [(Hipa)+ ⋅ (ptua−), ptua− = p-toluate] (2), isopropylamine: (p-methoxybenzoic acid) [(Hipa)+ ⋅ (pmba−), pmba− = p-methoxybenzoate] (3...

The solubility of syringic acid, vanillic acid and veratric acid was measured in pure water and eleven organic solvents (methanol, ethanol, 1-propanol, 2-propanol, 2-butanone, ethyl acetate, acetonitrile, dimethylformamide, 1,2-propanediol, 1,3-propanediol and 1,3-butanediol), at 298.2 K and 313...

Phenolic acids perform biological effects which are largely influenced by their binding to serum albumin. Therefore, investigating structure-affinity relationship of binding between phenolic acids and serum albumin is important. In this study, 114 phenolic acids and their derivatives, sharing th...

The interactions between dietary fiber (DF)-bound antioxidants and free antioxidants, with different substitution patterns of –OH and –OCH3 groups on their aromatic rings has been investigated. The activity and efficiency of these interactions were examined with a structural approach. Whole wh...

The complex formation of neptunium(V) with 4-hydroxy-3-methoxybenzoic acid (vanillic acid) was studied by time-resolved laser-induced fluorescence spectroscopy with ultra-short laser pulses using the fluorescence properties of 4-hydroxy-3-methoxybenzoic acid. A 2:1 complex of neptunium(V) with 4...

The vapor pressures of crystalline and liquid phases of methyl p-hydroxybenzoate and of methyl p-methoxybenzoate were measured over the temperature ranges (338.9 to 423.7) K and (292.0 to 355.7) K respectively, using a static method based on diaphragm capacitance gauges. The vapor pressures of t...