Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Determination of Fenvalerate reside in raisin via vortex-assisted surfactant-enhanced emulsification liquid–liquid microextraction (VSLLME) method by using HPLC system
161
167
EN
Fatemeh
Yousefnezhad Maleki
0000-0003-2788-2798
Department of Chemistry, Payam Noor University, Maragheh
fatemeh.maleki7090@gmail.com
Meghdad
Payab
0000-0002-2042-8851
Tofigh Daru Research and Engineering Pharmaceutical Company
meghdad.payab@gmail.com
Ali
Baghban
Department of Chemistry, Payam Noor University, Maragheh
alibaghban@gmail.com
Hossein
sheikhloie
Department of Chemistry, Maragheh branch, Islamic Azad University, Maragheh
h_sheikhloie@yahoo.com
10.22034/crl.2020.233886.1064
In this project, ultra-trace amounts of Fenvalerate residue in raisin, were determined via vortex-assisted surfactant-enhanced emulsification liquid–liquid micro extraction (VSLLME) method and by using HPLC-PDA detector at 225nm. In the VSLLME method, the extraction solvent is dispersed into the aqueous samples by assistance of vortex agitator. Meanwhile, the addition of a surfactant, which was used as an emulsifier, could enhance the rate of the mass-transfer from aqueous samples to the extraction solvent. The main parameters relevant to this method were investigated and the optimum conditions were established: 20 µL chlorobenzene was used as extraction solvent, 0.9 mmol.L-1CTAB was selected as the surfactant, the extraction time was fixed at 60s, 2% sodium chloride was added and the extraction process was performed under the room temperature. Under the optimum conditions, limit of detection (LOD) was 0.3 ng mL-1. The relative standard deviation (RSD, n=6) was 2.87%. The linearity was obtained by five points in the concentration range of 0.3 to 100.0 ng mL-1. Correlation coefficients (R2) was 0.9997, and the enrichment factor (EF) was 114. Finally, the proposed method has been successfully applied for determination of Fenvalerate in real samples. The recoveries of the target analyte in raisins samples were between 84.13% and 92.12%.
Fenvalerate,HPLC,Raisin,Vortex-assisted,surfactant-enhanced-emulsification
https://www.chemrevlett.com/article_109788.html
https://www.chemrevlett.com/article_109788_9ccda0a5983e4241086a04d143194d3b.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Investigating microbial properties of traditional Iranian white cheese packed in active LDPE films incorporating metallic and organoclay nanoparticles
168
174
EN
Sajad
Pirsa
Department of Food Science and Technology, Faculty of Agriculture, University of Urmia, Urmia Iran
pirsa7@gmail.com
Parisa
Abdolsattari
Department of Food Science and Technology, Faculty of Agriculture, University of Urmia, Urmia Iran
parisa.ab89@yahoo.com
Seyed Jamaleddin
Peighambardoust
Faculty of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, Iran
j.peighambardoust@tabrizu.ac.ir
Seyedeh Homa
Fasihnia
Department of Food Science, College of Agriculture, University of Tabriz, Tabriz, Iran
h_fasihnia@yahoo.com
Seyed Hadi
Peighambardoust
0000-0002-8438-7315
Professor of Food Technology,
Department of Food Science, College of Agriculture, University of Tabriz, Tabriz, Iran
peighambardoust@tabrizu.ac.ir
10.22034/crl.2020.231587.1059
Iranian white Cheese is a traditional type of cheese in Iran which is popular and widely consumed because of its pleasant organoleptic properties. To manufacture this cheese, raw milk is heated below pasteurization temperature, therefore, pathogenic and spoilage bacteria remain and cause several diseases in public health. In this research three kinds of nanocomposite films based on LDPE incorporated 1) Ag, CuO, ZnO, 2) Cloisite 15A, Cloisite 20A, Cloisite 30B that produced by extrusion method were used for packaging of the cheese and kept in 4°C during 28 days. Data analysis carried out using SPSS statistical software based on a completely randomized design. The results showed the nanocomposite films incorporated with metal nanoparticles had a significant decrease in the growth of Staphylococcus aureus, coliform, mold and yeast after 28 days, while, the growth of lactic acid bacteria decreased but less than control film. Sensory properties of cheese samples packed in active films were not significantly changed. However, physicochemical characteristics such as pH and moisture content were affected significantly by active films. Overall migration of packaging active films in food simulants were within amounts allowed by national and international legislations.
Traditional Iranian Cheese,Active nanocomposite films,Low-density polyethylene (LDPE),Nanoparticle
https://www.chemrevlett.com/article_110663.html
https://www.chemrevlett.com/article_110663_b42a0549bb13f57fac5eed7bb6fbb574.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Procarbazine adsorption on the surface of single walled carbon nanotube: DFT studies
175
179
EN
Mohammad Reza
Jalali Sarvestani
0000-0003-2903-977X
Young Researchers and Elite Club, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran
rezajalali93@yahoo.com
Roya
Ahmadi
Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran
i.j.new.chemistry@gmail.com
Behnam
Farhang Rik
Department of Inorganic Chemistry, Faculty of Chemistry, Tehran North Branch, Islamic Azad University, Tehran, Iran
behnamfarhangrik@yahoo.com
10.22034/crl.2020.110451
< p>In this research, the performance of single-walled carbon nanotube (SWCN) as a sensor and nanocarrier for procarbazine (PC) was investigated by infra-red (IR), natural bond orbital (NBO), frontier molecular orbital (FMO) computations. All of the computations were done using the density functional theory method in the B3LYP/6-31G (d) level of theory The calculated negative values of adsorption energy, enthalpy changes, Gibbs free energy changes showed the PC interaction with SWCN is exothermic, spontaneous and experimentally possible. The increasing of specific heat capacity (CV) of SWCN after adsorption of PC showed the thermal conductivity improved during the interaction process and this nanostructure is an excellent sensing material for the detection of PC. The NBO results demonstrate in all of the evaluated conformers a chemical bond with SP3 hybridization is formed between the medicine and SWCN. The great values of thermodynamic constants showed the adsorption process is irreversible and SWCN is not a suitable nanocarrier for delivery of PC. The density of states (DOS) spectrums showed the bandgap of SWCN decreased sharply after the adsorption of PC and this nanomaterial can be used as a sensor for electrochemical detection of PC.
Procarbazine,DFT,Carbon Nanotube,Adsorption
https://www.chemrevlett.com/article_110451.html
https://www.chemrevlett.com/article_110451_49342887bf8362fd500ac17cd0d35c46.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Converting polymeric mixture waste of a car breaker company to hydrocarbon by designed high performance co-pyrolysis system
180
183
EN
Ali
Khani
0000-0002-7997-1680
Department of Chemistry and Chemical Engineering, Miyaneh Branch, Islamic Azad University, Miyaneh, Iran.
a.khani59@yahoo.com
Shahram
Mohammadi
Taher shimi-e- Miyaneh Co., Miyaneh, Iran
shahrammohammadi49@gmail.com
Hamed
Rasoolzadeh
Taher shimi-e- Miyaneh Co., Miyaneh, Iran
hamed.rasoolzadeh@gmail.com
10.22034/crl.2020.242630.1075
Waste produced from car breaker companies severely affects the environment. So far, the only way to manage this complex waste is to bury it. In this research, the waste converted to hydrocarbons and carbon black by co-pyrolysis process in the designed high performance co-pyrolysis system. The results showed that the as-obtained maximum yield of heavy oil and light hydrocarbon wax, carbon black and non-condensable gas can be listed as mass basis of 8, 34, 3, 40 and 15%, respectively. The ratio of 5 W/W% treated expanded perlite as catalyst to waste increased the amount of light hydrocarbons to 34 W/W%.
Pyrolysis,Rotary kiln,Oil,Car scrapping
https://www.chemrevlett.com/article_111690.html
https://www.chemrevlett.com/article_111690_b0aa9b473cdbfda3a27055d6f95af269.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
A Short Chronological Review on the Syntheses of Amine-Boranes
184
191
EN
Daniel
O
Reddy
Chemistry, Purdue University, West Lafayette, USA
reddyd@purdue.edu
10.22034/crl.2020.238849.1070
Since their discovery by Burg and Schlesinger in 1937, amine-boranes have enjoyed a rich preparative history and have experienced reinvigorated interest as valuable compounds. These borane complexes have been implemented in a variety of applications, spanning from reagents in organic syntheses to hydrogen storage materials. The importance of amine-boranes derives especially from their reductive abilities. Given the utility of amine-boranes and their current resurgence, a mini review on their general properties and notable preparations is both timely and potentially of interest to organic and materials chemists alike.
Amine-boranes,Borane complexes,Synthetic history
https://www.chemrevlett.com/article_113425.html
https://www.chemrevlett.com/article_113425_e370d43e2001da27f2197bb06a6afac8.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Electrochemical sensors; Types and applications in the food industry
192
201
EN
Kurush
Sharifi
Department of Food Science and Technology, Facult
k.sharifi@urmia.ac.ir
Sajad
Pirsa
Department of Food Science and Technology, Faculty of Agriculture, Urmia University, Urmia, Iran
pirsa7@gmail.com
10.22034/crl.2020.240962.1073
Today, the use of new technologies in the food industry has become very important and widely used. Identifying these technologies and expanding them is very important for industrial societies. One of the new methods for analyzing and measuring materials in trace levels is electrochemical sensors. In the electrochemical sensors the reaction between food analytes and sensors are happen. These sensors have the ability to generate electrical signals appropriate to the concentration of the analytes. These sensors have been very effective in measuring and determining compounds and are being developed using new techniques. These sensors have many advantages over older and more expensive methods, while also being highly accurate. These sensors have a lot of potential and benefits, so in this study, it has been tried to define these new methods by using practical examples and described the use of these new methods in various industries, especially in the food industry.
Sensor,Biosensor,electrochemical,Food Industry
https://www.chemrevlett.com/article_111275.html
https://www.chemrevlett.com/article_111275_5ca51fd8fc3aa074cac748a4c2f8bf50.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Harmony of operations of some vitamins in controlling the 2019-nCoV virus based on scientific reports -
202
206
EN
Seyyed Amir
Siadati
0000-0002-6255-7264
Department of Chemistry, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
chemistry_2021@yahoo.com
Mohammad Amin
Rezvanfar
Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran, Iran
m.aminrezvanfar@yahoo.com
Esmaeil
Babanezhad
Department of Environmental Health, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran
esmaeil.babanezhad@gmail.com
Abolghasem
Beheshti
Department of Chemistry, Payame Noor University, Tehran, Iran
ag.beheshti@gmail.com
Meghdad
Payab
0000-0002-2042-8851
R&D Department, Quality Control Laboratories, Tofigh Daru Research and Engineering Company, Tehran, Iran
meghdad.payab@gmail.com
10.22034/crl.2020.250866.1082
Unlike other related compounds, vitamin D has multi-function operations against 2019-nCoV virus via intervention in several parts of its lifecycle. In one hand, this compound induces antimicrobial peptides like cathelicidins and proteins like defensins that lead to lower viral replication rates and also reduces the concentrations of pro-inflammatory cytokines (it causes inflammation that results in multi-organ failure). In the other hand, a vitamin D agonist, calcitriol, modulates the expression of members of the renin‑angiotensin system, including angiotensin converting enzymes like ACE2 (the cell receptor for 2019-nCoV viral spike protein). Thus, vitamin D may reduce the spike rate of the virus to the lung cells, resulting in inhibition of the virus in entry stage. About vitamin B series, there is a report that claims vitamin B12 may inhibit RNA-dependent-RNA polymerase activity of nsp12 from the 2019-nCoV virus.<br />Also, vitamins C, and E (anti-oxidants with anti-inflammatory effects) could be effective in inhibiting the damages of the organs caused by the acute immune response (inhibiting the release of high concentrations of free radicals) during COVID-19 as well as boosting the human immune system. It must be mentioned that, in spite of the presented supporting references, this paper is prepared for researcher, not for all people.
2019-nCoV,COVID-19,Vitamin D,Viral inhibition,Vitamin C,anti-inflammatory
https://www.chemrevlett.com/article_115257.html
https://www.chemrevlett.com/article_115257_546e7e5d3ed8fa2fe82a15dfce247ff6.pdf
Eurasian Science Society (ESS)
Chemical Review and Letters
2676-7279
2645-4947
3
4
2020
10
01
Nan@Tetracyanoethylene (n=1-4) systems: Sodium salt vs Sodium electride
207
217
EN
Navid
Salehi
Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
shimiradin95@chmail.ir
Esmail
Vessally
Department of Chemistry, Payame Noor University, Tehran, Iran
vessally@yahoo.com
ladan
edjlali
Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
l_edjlali@iaut.ac.ir
Ibon
Alkorta
Instituto de Química Médica (CSIC), Juan de la Cierva, 3, Madrid 28006, Spain
shimi.ziv@chmail.ir
Moosa
Eshaghi
Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
eshaghi.m@gmail.com
10.22034/crl.2020.230543.1056
Electrides are interesting and promising materials with cavity-trapped electrons which can be used as source of electron donor in different systems. Hereby, we have explored the possible formation of electride materials based on tetracyanoethylene (TCNE) backbone at MP2 computational level. This is achieved by systematic addition of up to four Na atoms to TCNE backbone. Our results predict high thermodynamic stability in the Nan@TCNE (n=1-4) systems. Moreover, based on the evaluation of four criteria, non-nuclear attractor (NNA), electron localization function (ELF), electron density laplacian (∇^2 ρ(r)), and non-linear optical (NLO), TCNE-Na1 and TCNE-Na2 and TCNE-Na4 species are conventional donor-acceptor systems (lithium salt). In contrast, the TCNE-Na3 species can be introduced as sodium electride with cavity-trapped electrons. Therefore, Na:TCNE ratio is very significant factor to provide species with electride feature through the addition of Na atoms to TCNE backbone.
Tetracyanoethylene,Sodium salt,Sodium electride,confined electron
https://www.chemrevlett.com/article_107317.html
https://www.chemrevlett.com/article_107317_d1fe64b3b96a64fcd85235e66572f63f.pdf