A5011360230- Analytical chemistry methods development
- Analytical Chemistry and Chromatography
- Advanced Chemical Sensor Technologies
- Pesticide Residue Analysis and Safety
- Phytochemistry and Biological Activities
- Essential Oils and Antimicrobial Activity
- Food Quality and Safety Studies
- Biosensors and Analytical Detection
- Nasal Surgery and Airway Studies
- Thyroid Disorders and Treatments
- Biopolymer Synthesis and Applications
- Cleft Lip and Palate Research
- Biochemical Analysis and Sensing Techniques
- Antioxidant Activity and Oxidative Stress
- Water Quality Monitoring and Analysis
- Heavy Metals in Plants
- Bauxite Residue and Utilization
- Esophageal and GI Pathology
- Tendon Structure and Treatment
- Heavy metals in environment
- Pharmaceutical and Antibiotic Environmental Impacts
- Sesquiterpenes and Asteraceae Studies
- Coal and Its By-products
- Nutritional Studies and Diet
- Pharmacological Effects and Assays
St. John's University
2007
Abstract A collaborative study was conducted to determine total iodine in infant formula and adult/pediatric nutritional by inductively coupled plasma-MS (ICP-MS) using AOAC First Action Official MethodSM 2012.15. The purpose of this evaluate the method's intralaboratory interlaboratory performance submit results INTERNATIONAL for adoption as a Final Method determination formula. Upon providing acceptable practice samples National Institute Standard Technology (NIST) Reference Material (SRM)...
Rationale Cotula cinerea of the Asteraceae family is a traditional Moroccan plant with various biological activities such as analgesic, cytotoxic and antioxidant effects which are often related to presence secondary metabolites. The present work aims screen identify main phytochemicals compounds extracts. Methods A method was developed that coupled rapid simple ultra‐high‐performance liquid chromatography system both photodiode array high‐resolution time‐of‐flight mass spectrometry detectors...
A collaborative study was conducted on a method for the measurement of 11 low-level pesticide residues in soft drinks and sports by liquid chromatography with tandem mass spectrometry. The determined this were alachlor, atrazine, butachlor, isoproturon, malaoxon, monocrotophos, methyl paraoxon, phorate, phorate sulfone, sulfoxide, 2,4-dichlorophenoxyacetic acid (2,4-D). Blind fortification solutions containing 3 different levels provided to 9 collaborating laboratories create test samples at...
The objective of this work is to develop a microwave assisted-ultraviolet (MW-UV) digestion in the presence dilute HCl and H2O2 followed by ion chromatography (IC) measurements for determination total nitrogen cereals. This approach (MW-UV-IC) requires lesser time does not need environmentally hazardous materials as used Kjeldhal method. Further, developed method only microliter quantities few milliliters matrix simultaneous conversion its ionic species subsequent analysis IC. At optimized...
AOAC First Action Method 2011.19: Chromium, Selenium, and Molybdenum in Infant Formula Adult Nutritional Products, was collaboratively studied. This method uses microwave digestion of samples with nitric acid, hydrogen peroxide, internal standard followed by simultaneous detection the elements an inductively coupled plasma (ICP)/MS instrument equipped a collision/reaction cell. During this collaborative study, nine laboratories from four different countries, using seven models ICP/MS...
The Codex Alimentarius Commission, a central part of the joint Food and Agricultural Organization/World Health Organizations Standards Program, adopts internationally recognized standards, guidelines, code practices that help ensure safety, quality, fairness food trade globally. Although standards are not regulations per se, regulatory authorities around world may benchmark against these or introduce them into within their countries. Recently, Committee on Nutrition Foods for Special Dietary...
The National Centre for Compositional Characterisation of Materials (NCCCM) / Bhabha Atomic Research (BARC) and Aluminium Company Limited (NALCO), India have produced an Indian origin bauxite certified reference material (CRM), referred to as BARC‐B1201, major (Al 2 O 3 , Fe SiO TiO loss on ignition ‐ LOI) trace contents (V 5 MnO, Cr MgO). was undertaken by strict adherence ISO Guides. A method previously developed validated in our laboratory, using single step dissolution subsequent...
Background: Salvia verbenaca of the Lamiaceae family is a Mediterranean plant widely used in Moroccan traditional folk medicine. The aim this work was to explore phytochemical composition extracts and its antioxidant activity. Methods: Separation identification major phytochemicals present two hexane ethyl acetate explored have been achieved through ultra-high-performance liquid chromatography separation technique coupled photodiode array high-resolution time-of-flight mass spectrometry...
Abstract Single- and multilaboratory testing data have provided systematic scientific evidence that a simple, selective, accurate, precise method can be used as potential candidate reference for dispute resolution in determining total biotin all forms of infant, adult, and/or pediatric formula. Using LC coupled with immunoaffinity column cleanup extraction, the fully meets intended purpose applicability statement AOAC Standard Method Performance Requirement 2014.005. The was applied to...
A liquid chromatography-tandem mass spectrometry (LC/ESI/MS/MS) method was developed and validated for the determination of ten sulfonamide antibiotic residues in raw shrimp meat: sulfadimethoxine, sulfachloropyridizine, sulfamethoxypyridizine, sulfamethazine, sulfamethizole, sulfamerazine, sulfathiazole, sulfamethoxazole, sulfadiazine, sulfapyridine.The procedure involves extraction homogenized sample into acetonitrile diluted with mobile phase.The analysis carried out using ODS-EP 5...
Abstract Background AOAC Method 2015.06 is a Final Action Official MethodSM for the determination of 12 elements (Na, Mg, P, K, Ca, Cr, Mn, Fe, Cu, Zn, Se, and Mo) in infant formula adult nutritional products, based on inductively coupled plasma (ICP)-MS. Currently, its scope does not include certain kinds formulations used India. The method would likely be more Indian laboratories if performance were characterized matrixes. Objective In this study we describe typical single-laboratory...