Isolation and characterization of curcumin from powdered rhizomes of turmeric plant marketed in Maragheh city of Iran with soxhlet technique
Mehdi
Nabati
Azarbaijan Shahid Madani University
author
Mehrdad
Mahkam
Azarbaijan shahid madani university
author
Hassan
Heidari
Azarbaijan Shahid Madani University
author
text
article
2014
eng
Turmeric (Curcuma longa L.) is extensively used as a spice, food preservative and colouring material. It has been used in traditional medicine for various diseases. Curcumin, the main yellow bioactive component of turmeric has been shown to have a wide spectrum of biological actions. Heretofore, it has been reported that natural colored extracts isolated from turmeric rhizomes with many methods such as maceration, digestion, microwave and infusion. In this paper, it was tried to isolate and characterize curcumin from the curcumin rhizomes marketed in Maragheh city of Iran by soxhlet extraction technique in methanol solvent. The advantage of this technique is the isolation of large amounts of curcumin (208 mg from 25 g turmeric rhizomes powder) with smaller quantity of methanol.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
236
243
https://icc.journals.pnu.ac.ir/article_801_74504db55e20452699142f0a811ea3e0.pdf
DFT study of dimers of dimethyl sulfoxide in gas phase
Reza
Fazaeli
Modeling and Optimization Research Center in Science and Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran, P.O. Box 11365-4435
author
Mohammad
Solimannejad
Department of Chemistry, Faculty of Sciences, Arak University, Arak 38156-8-8349, Iran
author
text
article
2014
eng
Density functional (DFT) calculations at M05-2x/aug-cc-pVDZ level were used to analyze the interactions between dimethyl sulfoxide (DMSO) dimers. The structures obtained have been analyzed with the Atoms in Molecules (AIMs) and Natural Bond Orbital (NBO) methodologies. Four minima were located on the potential energy surface of the dimers. Three types of interactions are observed, CH•••O, CH•••S hydrogen bonds and orthogonal interaction between the lone pair of the oxygen with the electron-deficient region of the sulfur atom. Stabilization energies of dimers including BSSE and ZPE are in the range 27–40 kJ mol-1. The most stable conformers of dimers at DFT level is cyclic structure with antiparallel orientation of S=O groups that pairing with three C–H…O and a S…O interactions.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
244
254
https://icc.journals.pnu.ac.ir/article_802_3089fa0b9326b33b6c52d38487a92bbe.pdf
Simple spectrophotometric methods for quantification of modafinil using 1,2-naphthoquinone-4-sulphonate and 2,4-dinitrophenol as analytical reagents
Burla Sunitha
Seshamamba
Department of Biotechnology, Jagarlamudi Kuppuswamy Choudary College, Guntur, Andhra Pradesh-522006, India.
author
Peruri Veera
Satyanarayana
Department of Biochemistry, Acharya Nagarjuna University, Guntur, Andhra Pradesh-522510, India.
author
Chandra
Sekharan
Department of Food Chemistry and Nutrition, College of Food Science and Technology, Bapatla, Andhra Pradesh-522101, India.
author
text
article
2014
eng
Two simple visible spectrophotometric methods are developed and validated for the quantification of modafinil using 1,2-naphthoquinone-4-sulphonic acid (NQS method) and 2,4-dinitrophenol (DNP method) as analytical reagents. The NQS method involves the reaction of modafinil with 1,2-naphthoquinone-4-sulphonate in alkaline medium at room conditions to form a yellow colored product exhibiting maximum absorption at 430 nm. DNP method is based on the proton transfer from 2,4-dinitrophenol to modafinil at room conditions and then we have the formation of yellow colored ion-pair complex exhibiting maximum absorption at 475 nm. Different variables affecting the reaction were studied and optimized. Under the optimized experimental conditions, Beer's law is obeyed in the concentration ranges of 10-100 and 8-60 μg/mL with the detection of limit values of 0.486 and 0.258 μg/mL for NQS method and DNP method, respectively The molar absorptivity and Sandell's sensitivity for both of the methods are reported. The methods were validated in terms of accuracy, precision and robustness. The results were satisfactory. The proposed methods were effectively applied to the analysis of the modafinil in their tablet formulations. The recoveries were 99.92% and 99.96% with RSD and 0.863% and 0.722% for NQS and DNS methods, respectively. The assay was not interfered by common excipients.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
255
268
https://icc.journals.pnu.ac.ir/article_813_f244589af745d1ea314771fa96669b85.pdf
Synthesis and characterization of supramolecule self-assembly polyamidoamine (PAMAM) G1-G1 NH2, CO2H end group Megamer
Omid
Louie
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
author
Abdoulhossien
Massoudi
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
author
Samaneh
Maghsoodi
Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
author
text
article
2014
eng
Supramolecule self assembly polyamidoamine (PAMAM) dendrimer refers to the chemical systems made up of a discrete number of assembled molecular subunits or components. These strategies involve the covalent assembly of hierarchical components reactive monomers, branch cells or dendrons around atomic or molecular cores according to divergent/convergent dendritic branching principles, systematic filling of space around a core with shells (layers) of branch cells. The polydispersity index (PDI) for the Supramolecule megamer are pretty closed to one, are in agreement with the Poisson probability distribution. Polyamidoamine (PAMAM) dendrimer G1-G1 that it was PAMAM Megamer NH2, COOH end group synthesized and characterized by FT-IR, 1H NMR, 13C NMR spectra and Gel Permeation Chromatography (GPC).
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
269
276
https://icc.journals.pnu.ac.ir/article_821_9c5039d59271de0e179004a60f387096.pdf
Isolation and structure elucidation of coumarin and cinamate derivatives from Lycium ruthenicum
Hassan
Valizadeh
Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
author
Fatemeh
Mahmoodi Kordi
Department of Biology, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
author
Reza
Koohkan
Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
author
Mir Babak
Bahadori
Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
author
Mehdi
Moridi Farimani
Department of phytochemistry, Shahid Beheshti University, Tehran, Iran
author
text
article
2014
eng
Lycium species is a popular medicinal plant in the traditional Chinese medicine and Lycium ruthenicum is a native medicinal plant of Iran. Lycium genus has several biologically important properties too. Investigation of chemical composition of ethyl acetate extract of this plant is the goal of this study. Two coumarins (Scopoletin and Sculetin) and Methyl-2-hydroxy-4-undecanoxy-trans-cinamate were isolated and characterized as the major constituents using 1H-NMR, 13C-NMR and FT- IR spectroscopic data, MS spectrometry, elemental analysis and by comparison with the literature values. Phytochemical investigation of Lycium ruthenicum demonstrated the presence of important biologically active compounds. This is the first phytochemical study of this species in Iran.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
277
282
https://icc.journals.pnu.ac.ir/article_826_5cd210ec22d52ccfbaa407a6158adab8.pdf
QSRR models of veterinary drugs in milk in ultra-performance liquid chromatography coupled to time of flight mass spectrometry
Hadi
Noorizadeh
Department of Chemistry, Payame Noor University of ilam, Ilam, Iran
author
Sharmin
Esmaeilpoor
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 , Tehran, Iran
author
Zohreh
Moghadam
Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 , Tehran, Iran
author
Shahnaz
Nosratolahy
Education Ilam, Fazilat Girls High School
author
text
article
2014
eng
The veterinary drugs residues are also important pollutants found in milk, since veterinary drugs are commonly used in cattle management. Considering the role of milk in human nutrition and its wide consumption throughout the world, it is very important to ensure the milk quality. A quantitative structure–retention relationship (QSRR) was developed using the partial least square (PLS), Kernel PLS (KPLS) and Levenberg-Marquardt artificial neural network (L-M ANN) approach for chemometrics study. Genetic algorithm was employed as a factor selection procedure for PLS and KPLS modeling methods. By comparing the results, GA-KPLS descriptors are selected for L-M ANN. Finally a model with a low prediction error and a good correlation coefficient was obtained by L-M ANN. This is the first research on the QSRR of veterinary drugs using the chemometrics models.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
283
299
https://icc.journals.pnu.ac.ir/article_831_7f2404c98650143656c473c4b1a7bcf7.pdf
Pharmacological properties of some 3-substituted indole derivatives, a concise overview
Kobra
Nikoofar
chemistry department, school of sciences, alzahra university, vanak, tehran, i.t.iran
author
Diba
Kadivar
Department of Chemistry, School of Science, Alzahra University, Vanak, Tehran 1993891176, Iran
author
Samaneh
Shirzadnia
Department of Chemistry, School of Science, Alzahra University, Vanak, Tehran 1993891176, Iran
author
text
article
2014
eng
Indole is a nitrogen-containing heterocycle. It is a very important motif in agriculture and pharmacy. Many compounds containing indole moiety has been isolated form nature. It is also an important part in natural alkaloids. Tryptophan is an amino acid which posses indole. 3-Sustituted indoles are the main group of its derivatives. Because the wide-spread application of 3-substituted indolic compounds their synthetic procedures are in demand by organic chemists. In this review we have focused on about twenty compound of 3-substituted indole derivatives that showed pharmacological properties. A concise synthetic route for some of them has also been reported. The main pharmaceutical properties of these compounds are antibacterial, anticancer and antimicrobial activities.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
300
315
https://icc.journals.pnu.ac.ir/article_832_c7f6dcea50a9ba9c396b9f15fd5cd9ef.pdf
Characterization of intermolecular interaction between Cl2 and HX (X=F, Cl and Br): An ab initio, DFT, NBO and AIM study
Morteza
Vatanparast
Department of Physical Chemistry, University of Tabriz, Tabriz, Iran
author
Nabi
Javadi
Department of Chemistry, Kharazmi (Tarbiat Moallem) University, Tehran, Iran
author
Rasoul
Pourtaghavi Talemi
Department of Chemistry, Kharazmi (Tarbiat Moallem) University, Tehran, Iran
author
Elahe
Parvini
Department of Physical Chemistry, University of Tabriz, Tabriz, Iran
author
text
article
2014
eng
The character of the intermolecular interactions in Cl2-HX (X =F, Cl and Br) complexes has been investigated by means of the second-order Möller–Plesset perturbation theory (MP2) and the density functional theory (DFT) calculations. The results show that there are two types of lowest interaction potential equilibrium structures in the interactions between Cl2 and HX: X∙∙∙Cl type geometry and hydrogen-bonded geometry. The calculated interaction energies show that the X∙∙∙Cl type structures are more stable than the corresponding hydrogen-bonded structures. The nature of the intermolecular interactions has been also investigated by natural bond orbital (NBO) and atoms in molecules (AIM). The AIM analysis reveals that both types of intermolecular interactions are “closed-shell” noncovalent interactions.
Iranian chemical communication
2423-4958
2
v.
Issue 4, pp. 236-325, Serial No. 5
no.
2014
316
325
https://icc.journals.pnu.ac.ir/article_833_bd94bedb2d39bff8351d1968302bc58d.pdf