A5012425680- Biodiesel Production and Applications
- Catalysis and Hydrodesulfurization Studies
- Lubricants and Their Additives
- Catalysis for Biomass Conversion
- Food Chemistry and Fat Analysis
- Edible Oils Quality and Analysis
- Tribology and Wear Analysis
- Catalytic Processes in Materials Science
- Enzyme Catalysis and Immobilization
- Petroleum Processing and Analysis
- Natural Products and Biological Research
- Microbial Metabolic Engineering and Bioproduction
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Coconut Research and Applications
- Conducting polymers and applications
- Inorganic and Organometallic Chemistry
- ZnO doping and properties
- Modeling, Simulation, and Optimization
- Mesoporous Materials and Catalysis
- Nigella sativa pharmacological applications
- Food composition and properties
- Polymer Nanocomposite Synthesis and Irradiation
- Tribology and Lubrication Engineering
- Polymer composites and self-healing
National University of Malaysia
2015-2024
Hadhramout University
2020
Institute of Food Science and Technology
2017
Thamar University
2016
The physicochemical properties of different grades Malaysian crude palm oil (high free fatty acid (HFFA-CPO) and low (LFFA-CPO)) were analyzed in this study to determine their applicability as edible oils. percentages acids (FFAs%), iodine value, hydroxyl unsaponifiable moisture content for HFFA-CPO LFFA-CPO 8.7 ± 0.3 3.8 0.1%; 53.1 0.4 56 g I2/100 g; 32.5 0.6 18.5 0.9 mg KOH/g oil; 0.31 0.01 0.46 0.02%; 0.33 0.01%, respectively. compositions determined using a gas chromatography-flame...
The epoxidation process of palm olein (PO o ) was carried out by using in situ generated performic acid (HCOOOH) to produce epoxidized (EPO). HCOOOH produced mixing formic (HCOOH) as oxygen carrier and hydrogen peroxide (H 2 O donor various ratio PO : HCOOH: H . effect HCOOH concentration, temperature, stirring reaction time were studied. presence oxirane ring EPO characterised fourier transformation infra‐red (FTIR), proton carbon nuclear magnetic resonance ( 1 H‐NMR 13 C‐NMR) spectra....
In this study, an intermediate zinc oxalate phase was synthesized by the coprecipitation of from a nearly saturated solution acetate and 2-propanol oxalic acid. A highly crystalline pure ZnO nanoparticles successfully obtained after calcination at 400 °C–600 °C for 4 h. unimodal, narrow size distribution with average particle sizes 3, 28, 25 nm observed °C, 500 600 respectively. Moreover, field-emission scanning electron microscopy transmission images revealed different surface structures...
Hydroprocessing of fatty carboxylic acids over 5 wt% Ni/Al-SBA-15 reveals a strong dependence product yield and selectivity on Si : Al ratio.
An investigation of physicochemical properties Nigella sativa seed oil from Al-Qassim, KSA was conducted using cold press and Soxhlet extraction methods. The effect solvent polarity on the components were examined hexane, tetrahydrofuran, ethanol, dichloromethane, methanol methanol-water binary system. results demonstrated a high yield with method ethanol (40.16%) while samples extracted methanol–water system produced lowest (28.28%). Linoleic acid major free fatty in all followed by oleic...
Films of PMMA and doped with NiCl 2 different contents were prepared using the casting technique. The optical properties all films investigated spectrophotometric measurements absorbance transmittance in wavelength range 200–800 nm. change calculated values energy gaps increasing content has been interpreted terms structural modifications matrix. gap decreased from 3.6 to 3.05 eV concentration 0.4%. effect doping on constants such as refractive index, extinction coefficient, real imaginary...
Crude palm kernel oil (CPKO) was converted into its free fatty acids (FFAs) via alkaline hydrolysis.The reaction optimization performed using Response Surface Methodology (RSM) through D-optimal design to optimize the conducted hydrolysis parameters.The parameters were varied from 1.5 2.5 h of time, 50-70°C temperature, and ethanolic KOH concentration 1-2 M. The highest percentage 98 ± 0.7 % with a acid yield 84.7 0.6 under optimal conditions, which 2.16 1.77 M concentration, 70°C...
Palm olein (P<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mtext>O</mml:mtext></mml:mrow><mml:mrow><mml:mtext>o</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>) is widely produced as edible oil in tropical countries. P<mml:math id="M2"><mml:mrow><mml:msub><mml:mrow><mml:mtext>O</mml:mtext></mml:mrow><mml:mrow><mml:mtext>o</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>is considered renewable raw material for the new...
The objective of the current study was to separate saturated fatty acids (SFAs) from high free acid crude palm oil mixture using methanol crystallisation method. development method procedure based on various parameters. composition determined by gas chromatography-flame ionisation detector (GC-FID) as Fatty Acid Methyl Esters. highest percentage SFAs more than 89% with yield 48.9% under optimal conditions acids-to-methanol ratio 1:15 (w/v), temperature −15 °C, and time 24 hours,...
Nigella sativa L. is a fragrant plant that belongs to the Ranunculaceae family. It commonly used as form of traditional medicine in Middle-Eastern countries. In this study, seed oil from Saudi Arabia was extracted using cold press and Soxhlet methods investigate effects solvents polarities on yield antioxidant properties. The analysis revealed highest (40%) obtained with ethanol solvent. aqueous methanol extract level total phenolic compounds (239 mg GAE/g). Moreover, showed most elevated...
Pure and doped PMMA films with NiCl2 have been deposited by using casting method. Optical measurements were studied UV-VIS technique in the wavelength ranges (200-800)nm. The optical properties dispersion parameters of as a function doping concentration NiCl2. Changes direct energy band gap confirmed after doping, decreased from 3.29eV for pure to 1.90eV increasing 0.4%, These result inversely Urbach tails where increased 278 702 meV. changes investigated. An increase causes an reflectance,...
Synthesis of new lubricants nowadays is increasing to improve the lubricity properties and quality lubricant.In current study, eight diesters with different chemical structures were tested in terms their suitability as lubricants.The esterification reaction was carried out using Dean-Stark distillation method some modification.Fourier transformation infra-red (FTIR), proton carbon nuclear magnetic resonance ( 1 H-NMR 13 C-NMR), used verify structure diesters.The results showed that dioleyl...
The separation of free fatty acids (FFAs) was done by using short-path distillation (SPD). parameters at their boiling points, a feed amount 2.3 mL/min, an operating pressure 10 Torr, condenser temperature 60°C, and rotor speed 300 rpm. physicochemical characteristics oil before after SPD were determined. results showed that FFA % 8.7 ± 0.3 0.9 0.1 %, iodine value 53.1 0.4 52.7 0.5 g I2/100 g, hydroxyl 32.5 0.6 13.9 1.1 mg KOH/g, unsaponifiable 0.31 0.01 0.20 0.15%, moisture content 0.24 for...