Search
61 articles for “mass spectrometer”
-
Gold Nanoparticle Size, Biodistribution, and Toxicity: Insights from DualEnergy CT
Abstract: Dual-energy and spectral computed tomography (CT) have emerged as powerful platforms for noninvasive, quantitative mapping of nanoparticle biodistribution in vivo. By exploiting the energy-dependent attenuation profiles of high-atomic-number (high-Z) materials, these systems enable material decomposition and element-specific imaging, thereby distinguishing nanoparticle signals from those of soft tissues and conventional iodinated contrast agents. Photon-counting spectral CT further enhances this capability by binning individual photons into multiple energy channels, improving spatial resolution, …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 28, Issue 2, 2025 · pp. 22–34 Read article
-
Evaluation of the Formation, Concentration, and Mitigation of Heterocyclic Amines in Selected Nigerian Proteinaceous Delicacies
Abstract: This study characterised the kinetics and concentration profiles of six HCA congeners — 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), 2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), 2-Amino-3,4,8-trimethylimidazo[4,5-f]quinoxaline (DiMeIQx), 2-Amino-3-methylimidazo[4,5-f]quinoline (IQ), 1-Methyl-9H-pyrido[3,4-b]indole (harman), and 9H-pyrido[3,4-b]indole (norharman) — in six Nigerian food preparations (grilling of popular delicacies — including suya, kilishi, asun, and smoked catfish (eja aro)) using validated liquid chromatography–tandem mass spectrometry (LC-MS/MS) under three cooking modalities (charcoal grilling, pan-frying, oven-roasting). The inhibitory potential of five natural marinade formulations — …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 15, Issue 2, 2026 · pp. 1–11 Read article
-
Synthesis of a Re-Usable HCl Treated Graphite Catalyst for Biodiesel Production from Pongamia Pinnata Oil and DMC
Abstract: AbstractThe aim of this research was to investigate the biodiesel from Pongamia pinnata oil with HCl treated graphite catalyst via transesterification. New biodiesel formation process was designed using P. pinnata oil and HCl treated graphite catalyst. Graphite powder was treated with HCl and HCl treated graphite was used as a catalyst. 95% biodiesel yield was obtained with operating conditions, including P. pinnata oil to dimethyl carbonate ratio (1:3), catalyst concentration …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 8, Issue 2, 2018 · pp. 30–37 Read article
-
Semiconductor Devices for Assessing Freshness of Food Products
Abstract: Freshness of food is one of the major deterministic factors that govern human health and wellbeing. Consumption of stale food can have minor to serious health implications. In general assessment of the quality of food relies upon human sensory evaluations. However, the perceived intensity of sensory attributes can vary significantly. To replace this confusion, scientists develop portable and inexpensive sensors with notable accuracy. In particular, dairy products, seafood and meat …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 3, 2020 · pp. 5–10 Read article
-
Next Generation Immunoassays for Infectious Diseases of Animals
Abstract: Veterinary diagnostics has an essential role to play in the management and control of infectious diseases. Immunodiagnostics originated towards the end of 19th century with the advent of agglutination- and precipitation-based serological techniques. Progress in immunodiagnostics during the 20th century is marked by development of complement fixation test, and later, fluoro-, radio- and enzyme-immunoassays during 1950s, 1960s and 1970s, respectively. Various immunodiagnostic test formats were improved for their performance characteristics …
Published in Research and Reviews : A Journal of Immunology · Vol. 7, Issue 2, 2017 · pp. 22–43 Read article
-
A Novel Technique for Stability Testing of Alliin and Sennosides in Unani Formulations
Abstract: Unani system of medicines is a science which deals with the preventive and promotive aspects of health of human beings and health problems that arise due to factors like ecological and/or environmental, which include humours categorized as blood, phlegm, yellow bile and black bile, and different biological fluids circulating in various vessels of the body. There is significant mandate in drug testing for a specific and precise analytical method for …
Published in Research & Reviews : A Journal of Unani, Siddha and Homeopathy · Vol. 1, Issue 1, 2014 · pp. 1–5 Read article
-
Food Packaging Chemicals and Human Health: Molecular Toxicity, Exposure Pathways, and Regulatory Perspectives
Abstract: Food packaging plays a vital role in preserving food quality, extending shelf life, and ensuring safe transportation. However, increasing evidence indicates that chemicals from packaging materials can migrate into food during processing, storage, and consumption, resulting in chronic human exposure. Several food packaging chemicals, including bisphenols, phthalates, per- and polyfluoroalkyl substances (PFAS), styrene, heavy metals, and non-intentionally added substances (NIAS), have emerged as important xenobiotics due to their potential adverse …
Published in Research and Reviews: A Journal of Toxicology · Vol. 16, Issue 2, 2026 Read article
-
AI-Assisted Kinetic Modeling of PLA Hydrolysis Under Subcritical Water Conditions for Sustainable Polymer Recycling
Abstract: The accumulation of poly (lactic acid) (PLA) in terrestrial and marine ecosystems has intensified the demand for closed-loop, green recycling technologies. Subcritical water (SCW) hydrolysis offers a promising, catalyst-free pathway for the rapid depolymerization of PLA into its constituent monomer, lactic acid. However, the complex, highly non-linear kinetics governing macro-molecular degradation under variable hydrothermal conditions limit real-time process optimization and industrial scalability. This study develops a novel artificial intelligence (AI)-assisted …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 17, Issue 2, 2026 · pp. 65–74 Read article
-
Optical Absorption and Electronic Properties of 4-Aminoantipyrine Schiff’s Bases: A Combined Experimental and DFT Study
Abstract: The Schiff base compounds (A1–A9) have been synthesized and characterized by elemental analysis, FT-IR, UV-Vis, mass spectrometry, 1H-NMR and 13C-NMR. Electronic absorption spectra of A1–A9 are studied in various solvents with different polarity like hexane, chloroform, methanol and dimethyl sulfoxide. To support and better understanding of experimental results, density functional theory (DFT), time dependent density functional theory (TDDFT) calculations has been carried out for these molecules and are in good …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 1, 2017 · pp. 1–13 Read article
-
Preparation of Rocket Grade Hydrogen Peroxide and Catalyst Pack for Monopropellant Rocket Thruster
Abstract: Preparation of rocket grade hydrogen peroxide and silver catalyst pack has been realized. The concentration of rocket grade hydrogen peroxide has to be above 85% and free from any kind of stabilizers. Two types of commercially available hydrogen peroxide were purchased for this research. For the preparation of rocket grade hydrogen peroxide, there are two methods: (i) atmospheric pressure boiling and (ii) below atmospheric pressure boiling. The results show that …
Published in Journal of Aerospace Engineering & Technology · Vol. 2, Issue 2, 2012 · pp. 1–8 Read article
-
A Critical Evaluation of Mercury Contamination in Groundwater of Punjab
Abstract: Groundwater in Punjab State has been over-exploited for irrigation purposes during the last few decades. As a consequence, it has been contaminated with heavy metals including Mercury, which is highly toxic for human health. The permissible limit for Mercury in groundwater is 0.001 mg/L (1ppb). Mercury concentration in groundwater has been estimated using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) which is calibrated using a standard protocol. Ferozepur district in Punjab …
Published in Journal of Water Pollution & Purification Research · Vol. 10, Issue 3, 2023 · pp. 1–11 Read article
-
Arsenic Contamination in Groundwater of the Majha Belt of Punjab, India, and its Probable Carcinogenic and Non-Carcinogenic Health Hazards
Abstract: Arsenic is widespread in India. Majha belt of Punjab State, comprising districts of Amritsar, Gurdaspur and Tarn Taran, is reported facing a crisis situation due to high levels of arsenic in its groundwater. ICAR (Indian Council of Agricultural Research) has reported arsenic beyond safe limit in 13 districts of Punjab. Sample analysis was done using standard protocol in the sophisticated laboratory of DWSS (Department of Water Supply and Sanitation) in …
Published in Journal of Water Pollution & Purification Research · Vol. 10, Issue 2, 2023 · pp. 106–132 Read article
-
Databank on Phytochemistry and Phytotherapy
Abstract: Presented review serves as an example of the application of Excel-VBA on huge data amounts considering the areas of world-wide Ethnopharmacology, Pharmacognosy together with modern identification tools within Phytochemistry. In recent years, modern drug design has returned back to nature, rather applying guidance achieved from herb remedies valid during centuries. The databank established of information of 200 medicinal plants from all parts of the globe, comprises now of over 4700 …
Published in Research & Reviews: A Journal of Bioinformatics · Vol. 7, Issue 1, 2020 · pp. 31–51 Read article
-
Phytochemical profiling in different fruit stages of Morinda citrifolia L. by GC-MS analysis
Abstract: Morinda citrifolia L., commonly known as Noni or Indian Mulberry is being widely used for its various therapeutic activities. The fruit juice of M. citrifolia is commercialized as health tonic due to neutraceutical property. In the present phytochemical screening of the ripened fruit has revealed the presence of generic phytoconstituents like alkaloids, phenols, glycosides, terpenoids, flavanoids, tannins and reducing sugars. The chemical constituents present in the methanolic extract of the …
Published in Research & Reviews : Journal of Botany · Vol. 7, Issue 1, 2018 · pp. 27–37 Read article
-
Chemical Composition, Antibacterial and Antifungal Activity Studies on Essential Oils of Ocimum basilicum Linn. from Saudi Arabia
Abstract: This study was designed to investigate the chemical constituents, antibacterial and antifungal activities of Ocimum basilicum. L essential oil extracted from the areal parts of the plant. Essential oil was extracted by hydro distillation for 3 h using a Clevenger apparatus. Anhydrous sodium sulphate was used to remove the moisture from the extracted volatile oil. Essential oil was characterized using Gas Chromatography with Mass Spectrometry (GC-MS). The results showed 39 …
Published in Research & Reviews : Journal of Botany · Vol. 11, Issue 2, 2022 · pp. 1–11 Read article
-
Aluminium in Libyan Cereals and Its Daily Intake Assessment
Abstract: Dietary aluminium intake in Libya was estimated by consuming cereals. Aluminium concentrations of wheat, barley, corn, and rice were determined by inductively coupled plasma-mass spectrometry (ICP-MS). Aluminium content in cereals ranged from 0.62 to 40 mg/kg. The daily dietary aluminium intakes from wheat, barley, corn, and rice were 7.86, 0.56, 0.018 and 0.115 mg/day, respectively, however, for all cereals was 8.56 mg/day. The mean weekly percentages of the provisional tolerable …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 9, Issue 2, 2020 · pp. 13–17 Read article
-
Chemical Constituents and Tyrosinase Inhibitory Activity of Ethyl Acetate Extract of the Leaves of Morus alba L. from Vietnam
Abstract: AbstractFour compounds (DB1–4) were isolated from the Mulberry leaves (Morus alba L.) collected in Thai Nguyen province by chromatographic methods. These compounds were identified as: Kaempferol-3-O-β-D-glucopyranoside (DB1), quercetin 3-O-α-L-rhamnopyranoside (DB2), isofraxidin-7-O-β -D-glucopyranoside (DB3), and (±) -3, 5, 6, 7, 8, 4’-hexahydroxyflavane (DB4). Their structures were elucidated by spectroscopic methods, including mass spectrometry (MS) and nuclear magnetic resonance (NMR). Compound DB4 was isolated from Mulberry leaves for the first time. Compound …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 8, Issue 1, 2018 · pp. 21–26 Read article
-
Quantitative Analysis of Eucalyptus Umbellata Essential Oil Extracts from Microwave Assisted Extraction Through GC-MS
Abstract: Microwave assisted extraction was green technology for extraction of essential oil from natural plants and herbs. Microwave extraction extracted the eucalyptus essential oil from eucalyptus umbellata leaves using microwave heating at atmospheric pressure. The two operating parameters involved in MAE, which was extraction time and microwave power. The extracted oil was analyzed through the gas chromatograph – mass spectrometer, which was used for investigating the composition of eucalyptus umbellata essential …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 2, Issue 2, 2015 · pp. 22–26 Read article
-
Chemical Constituents and Antacid Activity of Aqueous Extract of the Leaves of Sanchezia nobilis Hook.f. from Vietnam
Abstract: From the aqueous extract of the leaves of Sanchezia nobilis Hook.f. collected in Nam Dinh province by chromatographic methods. Their chemical structures were elucidated by the measurements of melting temperature, rotation angle, mass spectrometry (MS), nuclear magnetic resonance (NMR) and compared with previously published data. These were identified as: 4',5,7-trihydroxy-3',5'-dimethoxyflavone (NX1), kaempferol-3-O-α-L-arabinofuranoside (NX2), kaempferol-3-O-β-D-glucopyranoside (NX3). These all compounds were isolated from the leaves of Sanchezia nobilis for the first time. …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 6, Issue 2, 2019 · pp. 15–22 Read article
-
Analytical Techniques Used In Metabolomic Analysis
Abstract: Comprehensive studies regarding metabolomics provides us ample of information about the structural properties and various other parameters pertaining to the molecule under study. Metabolomics is employed for managing long-term illness such as cancer, diabetes. It’s applications also stretch to treating diseases such as tachycardia along with various cardiovascular diseases. It is used to treat inborn errors of metabolism which are found out in infants. These molecules along with processes of …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 14, Issue 3, 2023 · pp. 52–68 Read article