The Application of Chemistry in Environment: 5 (24)

Open Access Article

1 - Check Anthocyanins, Flavonoids, Phenolics, Ascorbic Acid Concentration, Total Antioxidant Activity and Anti-Proliferative Activity in Human Liver Cancer Cells Fragaria X Ananassa Affected Plants After Harvest

The aim of this study was to study the physical quality, and the antioxidant activity and antiproliferative activity of strawberry fruit is harvested at maturity whiteheads and ripe red and 95 or 65% relative humidity for 12 days at 3 and 10 degrees Celsius is stored. I More

The aim of this study was to study the physical quality, and the antioxidant activity and antiproliferative activity of strawberry fruit is harvested at maturity whiteheads and ripe red and 95 or 65% relative humidity for 12 days at 3 and 10 degrees Celsius is stored. In both treatments, the relative humidity had no effect on fruit quality. The fruits whiteheads, reduce transparency (L) and angle shades or tints as well as increased concentrations of anthocyanins than 3 ° C at 10 ° C took place. Transparency ripe red fruits fell on the third day and during subsequent storage period would remain the same. The initial concentration of ripe red fruit anthocyanins. This is about five times greater than whiteheads fruits declined during the period of storage. The overall concentration of flavonoids and phenolic and antioxidant activity of fruits that were harvested at the stage of whiteheads more of the fruits were harvested at the red ripe stage.decreasing rapidly.the twelfth fell. Similar changes in the concentration of flavonoids and phenolic antioxidant activity changes but had no resemblance to the concentration of ascorbic acid or Ntvsyatyn. A correlation or relationship between quality fruit firmness and color features as well as phenolic and flavonoid or between fruit quality and overall concentration of antioxidant activity there. 50 grams per liter strawberry extract the inhibition of-HepG2 (human liver cancer cell proliferation) by about 80 percent. The antiproliferative activity of strawberry with maturity at harvest or storage temperature was not affected. Manuscript profile

Open Access Article

2 - Study Ofnano-Composite Conductivity PPY/MMT Using The Oxidizing Properties of the Substance, of The MMT and pyrroleusing XRD Observations

Enzyme catalyzed polymerization which was conducted photochemicaly was studied. The effect of  pyrrole and oxidant (Fecl3) concentrations, MMT percent and temperature increasing on the conductivity of the PPY/MMT nano-composites was investigated. By polymerization More

Enzyme catalyzed polymerization which was conducted photochemicaly was studied. The effect of  pyrrole and oxidant (Fecl3) concentrations, MMT percent and temperature increasing on the conductivity of the PPY/MMT nano-composites was investigated. By polymerization of pyrrole in the presence of Fecl3 and clay in aqueous medium, nano composites of PPY/MMT successfully was synthesized. The conductivity of nano-composites PPY/MMT at different concentrations of Fecl3 (0.1M to 0.4M) increased from0.45 to2.25s/cm. But the conductivity of the nano-composites decreases by the percentage of MMT (25/2 to38/0 s / cm). As while, the conductivity increases with increasing concentration of pyrrole. Preparation of PPY / MMT nano-composites in lower temperatures (about 5° C) and room temperature (25 ° C) was increased the conductivity. The optimum level for the nanocomposites is at 90℃. The XRD analysis demonstrated that the nanocomposite prepared at lower temperatures have similar peak with 25 ℃, respectively. Incorporation of polypyrrole in the MMT interlayer space, also occur at low temperatures. Based on these findings, 6hours is the best time for the polymerization of polypyrrole in aqueous media. During 3hours (41/0 S/cm) to 6hours (25/2 S/cm) of the preparation time, the conductivity increases rapidly. But further increase up to 9 hours (45/0 S/cm) and 24 hour((15/0 S/cm), gradually decrease the conductivity. Manuscript profile

Open Access Article

3 - Synthesis and Rheological Properties of Poly (Acrylamide-Co-Acrylic Acid) As Soil Stabilizers

Nowadays, use of polymeric mulch such as polymers based on acrylamides due to being eco-friendly, safety and low cost is developing. In this study, for the first time, poly (acrylamide-co-acrylic acid) was used in small-scale plots in experimental conditions for use in More

Nowadays, use of polymeric mulch such as polymers based on acrylamides due to being eco-friendly, safety and low cost is developing. In this study, for the first time, poly (acrylamide-co-acrylic acid) was used in small-scale plots in experimental conditions for use in soil as stabilization and preventing its loss. Copolymer based on acrylamide and acrylic acid was synthesized by free radical polymerization. Fourier transform infrared spectroscopy revealed that the carboxylic acid and amide functional groups were successfully polymerized in the material. To calculate the negative charge density of samples, titration method was performed. By increasing density of negative charge of polymer chains, the apparent viscosity decreases with higher rate. It can be seen that in the presence of acrylic acid, the ions shrank and became more like spheres which ultimately results in coil-like configuration. Finally, soil loss was determined using 0.4, 0.6, 1, 2, 3, 4 and 6 gr/m2 of copolymers in water and solutions sprayed On The Soil Surface Before Implementation Of Artificial Rainfall, Also Its Continuity In 30min Rainfall Was Studied.   Manuscript profile

Open Access Article

4 - The Effect of Time, Power of Radiation and Ratio of Solvent on the Antioxidant and Extraction Efficiency of Rosmarinus Officinalis L. Under Microwave From Kashan

Rosmarinus officinalis L. (commonly known as rosemary) as a member of the Lamiaceae family is a valuable aromatic and medicinal plant which is cultivated in large scale in Iran. In this study, we have tried to identify the effective parameters on the antioxidant and ext More

Rosmarinus officinalis L. (commonly known as rosemary) as a member of the Lamiaceae family is a valuable aromatic and medicinal plant which is cultivated in large scale in Iran. In this study, we have tried to identify the effective parameters on the antioxidant and extraction efficiency of Rosmarinus officinalis L. under microwave irradiation. The aerial parts of R. officinalis was collected from Ghamsar, province of Kashan. The antioxidative properties of the extracts were determined by bleaching of β-carotene (β-carotene-linoleic acid assay) and 2,20-diphenylpicrylhydrazyl (DPPH). The best solvent for the extraction of this plant was water under microwave radiation. Irradiation time, power of radiation and the ratio of water to the plant were considered as the most influential variables. The results show that the best conditions for the antioxidant and extraction efficiency of R. officinalis were obtained under 550 watt Irradiation for 55 minutes with the ratio of 3 mL/g (water to the plant). Manuscript profile

Open Access Article

5 - Synthesis, Characterization and Antibacterial Activity of Novel Co(II) Complexes Derived From Bis (2-Hydroxy-3 nitrophenyl) Methane

In this research bis(2-hydroxy-3nitrophenyl)methane were synthesized from condensation of 2-nitrophenol and formaldehyde in present of sulfuric acid as catalyst. The novel complexes were prepared by the reaction of ligand and Co(II) in 1:1 and 2:1 molar ratio. The compl More

In this research bis(2-hydroxy-3nitrophenyl)methane were synthesized from condensation of 2-nitrophenol and formaldehyde in present of sulfuric acid as catalyst. The novel complexes were prepared by the reaction of ligand and Co(II) in 1:1 and 2:1 molar ratio. The complexes were characterized by FT-IR, UV-Vis, mass spectroscopy and molar conductance. Spectral data confirmed that Coordination number around each atom is four with square planner geometry. The synthesized compounds were screened for their in vitro antibacterial activity against Gram-negative and Gram-positive bacterial strains. The results of these studies showed that the metal complexes have more antibacterial activity against species as compared with the non-complexed ligand.Among the tested compounds the most effective antibacterial agent was CoL2 with inhabitation zone of 20, 18, 12 and 20 for E.Coli, S.aureus, B.sabtilis and S.marcescens respectively. Manuscript profile

Open Access Article

6 - Synthesis, Characterization and Biological Activities of Metal (II) Dipicolinate Complexes Derived From Pyridine-2, 6-Dicarboxylic Acid and Tris (2-Aminoethyl) Amine

The new water-soluble and airstable compounds (tren) [Co(dipic)2]. 6H2O(1), (tren) [Ni(dipic)2].6H2O(2) and  (tren) [Zn(dipic)2].6H2O(3) were prepared by the reaction of corresponding metal (II) chloride, nitrate, sulfate and a proton transfer salt ,(tren)(Hdipic)2 More

The new water-soluble and airstable compounds (tren) [Co(dipic)2]. 6H2O(1), (tren) [Ni(dipic)2].6H2O(2) and  (tren) [Zn(dipic)2].6H2O(3) were prepared by the reaction of corresponding metal (II) chloride, nitrate, sulfate and a proton transfer salt ,(tren)(Hdipic)2,(4)of pyridine -2,6 -dicarboxylic acid (H2dipic) and tris(2-aminoethyl)amine (tren). the compounds 1-3 were characterized by elemental, IR, UV-vis, thermal analyses, magnetic measurement studies.The molecular structures of the title compounds consist of one (tren)3+cation , one bis(pyridine-2,6-dicarboxylate) metal (II) [M(dipic)2]2- anion , and six  uncoordinated water molecules . In compounds 1-3 the metal ions coordinate to two oxygen and one nitrogen atoms of two pyridine -2,6 - dicarboxylate  molecules forming an octahedral environment . Antimicrobial activities against Gram (-) wild type (Escherichia coli and Pseudomonas aeruginosa),Gram(+) wild type (Staphylococcus aureus, Staphylococcus epidermidis, Bacillus cereus and Bacillus subtilis ) and clinical isolate (Morganella morganii, Proteus vulgaris and Enterobacter aeruginisa) were also studied. MIC (Minimal Inhibition Concentration) values of the newly synthesized compounds were determined as 4000 µg/ml (expect B. subtilis and clinical isolate E. aeruginosa , >4000 µg/ml).   Manuscript profile

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