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Jurnal Institusi
Development of Candidate Reference Materials of Endosulfan Sulfate and Bifenthrin in Black Tea
Indonesian Journal of Chemistry; Vol 16, No 1 (2016); 72-79
The candidate reference materials of endosulfan sulfate and bifenthrin in black tea have been developed according to the requirements of ISO Guide 34 and 35. Preparation of candidate material includes grinding and sieving of the black tea leaves, spi...
Jurnal Institusi
Chemical Composition, Phytochemical Screening and Antioxidant Activity of Acmella uliginosa (Sw.) Cass Leaves
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 162-174
Acmella uliginosa (Sw.) Cass is widely used in traditional medicine and used in the treatment of many diseases. Extraction of component in leaves of Acmella uliginosa used methanol, ethyl acetate and n-hexane solvent. The percentage yield of extract ...
Jurnal Institusi
Synthesis Methyl Nitrophenyl Acrylate and Cytotoxic Activity Test against P388 Leukemia Cells
Indonesian Journal of Chemistry; Vol 15, No 1 (2015); 70-76
Synthesis of methyl nitrophenyl acrylate via modification of methyl trans-cinnamate had been done to improve its biological activity. The reaction of methyl trans-cinnamate with nitrating agent gave methyl 3-(2-nitrophenyl)acrylate and methyl 3-(4-ni...
Jurnal Institusi
Methylation of Eugenol Using Dimethyl Carbonate and Bentonite as Catalyst
Indonesian Journal of Chemistry; Vol 15, No 3 (2015); 256-262
Eugenol is a compound with a variety of reactive functional groups such as allyl, hydroxy and methoxy. The presence of the functional groups brings eugenol possible to undertake the transformation into various derivative compounds with diverse activi...
Jurnal Institusi
Conversion of Cyclohexanone to Adipic Acid Catalyzed by Heteropoly Compounds
Indonesian Journal of Chemistry; Vol 15, No 1 (2015); 64-69
Conversion of cyclohexanone to adipic acid using hydrogen peroxide as green oxidant catalyzed by heteropoly compounds i.e. H5[a-BW12O40] H4[a-SiW12O40] and H4[a-PVMo11O40] has been carried out systematically in one pot synthesis under mild condition....
Jurnal Institusi
Oxidation of Cyclohexane to Cylohexanol and Cyclohexanone Over H4[a-SiW12O40]/TiO2 Catalyst
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 175-180
Oxidation of cyclohexane to cyclohexanol and cyclohexanone was carried out using H4[a-SiW12O40]/TiO2 as catalyst. In the first experiment, catalyst H4[a-SiW12O40]/TiO2 was synthesized and characterized using FTIR spectroscopy and X-Ray analysis. In t...
Jurnal Institusi
Precious Metals Supported on Alumina and Their Application for Catalytic Aqueous Phase Reforming of Glycerol
Indonesian Journal of Chemistry; Vol 15, No 3 (2015); 269-273
The high cost of Pt based catalyst for aqueous phase reforming (APR) reaction makes it advantageous to develop less cost of other metals for the same reaction. APR is hydrogen production process from biomass-derived source at mild condition near 500 ...
PubMed
Superhydrophobic Nanosilica Decorated Electrospun Polyethylene Terephthalate Nanofibers for Headspace Solid Phase Microextraction of 16 Organochlorine Pesticides in Environmental Water Samples
Polymers (Basel)
A new solid phase micro extraction (SPME) fiber coating composed of electrospun polyethylene terephthalate (PET) nanofibrous mat doped with superhydrophobic nanosilica (SiO(2)) was coated on a stainless-steel wire without the need of a binder. The co...
PubMed
Decabromodifenyl Ether (BDE-209) in Surface Soils from Warsaw and Surrounding Areas: Characterization of Non-Carcinogenic Risk Associated with Oral and Dermal Exposure
Molecules
Polybrominated diphenyl ethers (PBDEs) have been used for many years as flame retardants. Due to their physicochemical and toxicological properties, they are considered to be persistent organic pollutants (POPs). BDE-209 is the main component of deca...
PubMed
Residual analysis of chitosan-based agronanofungicides as a sustainable alternative in oil palm disease management
Sci Rep
The nanoformulations of pesticides have shown great interest from many parties due to their slow release capability and site-specific delivery. Hence, in this work, a new nanoformulation of a fungicide, namely chitosan-hexaconazole nanoparticles with...
PubMed
Headspace Extraction of Chlorobenzenes from Water Using Electrospun Nanofibers Fabricated with Calix[4]arene-Doped Polyurethane–Polysulfone
Polymers (Basel)
Chlorobenzenes (CBs) are persistent and potentially have a carcinogenic effect on mammals. Thus, the determination of CBs is essential for human health. Hence, in this study, novel polyurethane–polysulfone/calix[4]arene (PU-PSU/calix[4]arene) nanof...
PubMed
Miniaturized method for the quantification of persistent organic pollutants and their metabolites in HepG2 cells: assessment of their biotransformation
Anal Bioanal Chem
Biotransformation can greatly influence the accumulation and, subsequently, toxicity of substances in living beings. Although traditionally these studies to quantify metabolization of a compound have been carried out with in vivo species, currently, ...
PubMed
Dynamics of the Dissipation of Acetamiprid, Azoxystrobin, and β-Cyfluthrin in Jalapeño Pepper (Capsicum annuum L.) Produced Under Greenhouse and Open-Field Conditions
Foods
Pepper is one of the most widely consumed foods around the world. China is the leading producer, while Mexico is the primary exporter. To support these roles, the responsible use of agrochemicals is essential. Additionally, investigating the factors ...
PubMed
Validation of a Modified QuEChERS Method for the Determination of Selected Organochlorine Compounds in Honey
Molecules
Honey is considered to be a health-promoting food product. Therefore, it is assumed that it should be free of contaminants. Although the use of organochlorine pesticides (OCPs) was banned a few decades ago in developed countries, persistent organic p...
PubMed
Organochlorine pesticide residues in raw milk samples collected from dairy farms and urban areas of Lahore district, Pakistan
J Food Sci Technol
The current study was employed to investigate the organochlorine pesticides (OCP) concentrations in milk, as the milk we consume, has residues of these notorious pesticides. The residual concentrations of OCP in milk have numerous harmful effects on ...
PubMed
Molecular basis of the glycoprotein C-negative phenotypes of herpes simplex virus type 1 mutants selected with a virus-neutralizing monoclonal antibody.
J Virol
Previously (Holland et al., J. Virol. 52:566-574, 1984; Kikuchi et al., J. Virol. 52:806-815, 1984) we described the isolation and partial characterization of over 100 herpes simplex virus type 1 mutants which were resistant to neutralization by a po...
PubMed
Semi-automated non-target processing in GC × GC–MS metabolomics analysis: applicability for biomedical studies
Metabolomics
Due to the complexity of typical metabolomics samples and the many steps required to obtain quantitative data in GC × GC–MS consisting of deconvolution, peak picking, peak merging, and integration, the unbiased non-target quantification of GC Ã...
PubMed
Biochemical characterization of peptides from herpes simplex virus glycoprotein gC: loss of CNBr fragments from the carboxy terminus of truncated, secreted gC molecules.
J Virol
A biochemical characterization of peptides from herpes simplex virus type 1 glycoprotein gC was carried out. We utilized simple micromethods, based on immunological isolation of biosynthetically radiolabeled gC, to obtain gC in pure form for biochemi...
PubMed
Herpes simplex virus type 1 glycoprotein C-negative mutants exhibit multiple phenotypes, including secretion of truncated glycoproteins.
J Virol
A virus-neutralizing monoclonal antibody specific for glycoprotein C (gC) of herpes simplex virus type 1 strain KOS was used to select a number of neutralization-resistant mutants. A total of 103 of these mutants also were resistant to neutralization...
PubMed
Characteristics of gastric cancer in peptic ulcer patients with Helicobacter pylori infection
World J Gastroenterol
AIM: To evaluate the incidence and clinical characteristics of gastric cancer (GC) in peptic ulcer patients with Helicobacter pylori (H. pylori) infection. METHODS: Between January 2003 and December 2013, the medical records of patients diagnosed wit...