You searched for: Author "Ullah, Aman" Remove constraint Author: "Ullah, Aman" Subject differential scanning calorimetry Remove constraint Subject: differential scanning calorimetry Subject temperature Remove constraint Subject: temperature
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1. Extraction, optimization, and characterization of lipids from spent hens: An unexploited sustainable bioresource
- Ullah, Aman, et al. ; Safder, Muhammad; Temelli, Feral; Show all 3 Authors
- Journal of cleaner production 2019 v.206 pp. 622-630
- Fourier transform infrared spectroscopy; biomass; differential scanning calorimetry; fatty acid composition; flame ionization; industrial byproducts; linoleic acid; lipid content; magnetism; market value; mass spectrometry; microwave treatment; moieties; oleic acid; palmitic acid; phase transition; poultry industry; quantitative analysis; response surface methodology; spent hens; standard deviation; temperature; thermal degradation; thermogravimetry
- ... Spent hen, a poultry industry by-product with little market value and high lipid content, can be used as a new and sustainable biomass source for lipid production. This study focused on conventional extraction methods and compared them with the microwave-assisted extraction of lipids from the spent hen. Over 95% of the lipids were recovered within 10 min using microwaves. Factors affecting the ext ...
2. Microwave-assisted rapid synthesis of a polyether from a plant oil derived monomer and its optimization by Box–Behnken design
- Ullah, Aman, et al. ; Ahmadi, Reza; Show all 2 Author
- RSC advances 2017 v.7 no.45 pp. 27946-27959
- Fourier transform infrared spectroscopy; differential scanning calorimetry; epoxidation reactions; equations; experimental design; gel chromatography; melting point; microwave radiation; microwave treatment; molecular weight; nuclear magnetic resonance spectroscopy; olefin; polymerization; polymers; reflectance; regression analysis; solvents; temperature; thermogravimetry
- ... In this study, a new strategy for making polyethers from α-olefin (1-decene) was developed using microwave irradiation and compared with a conventional method. The olefin was epoxidized and subjected to catalytic polymerization using both conventional and microwave synthesis techniques. The conventional epoxidation reaction of 1-decene took 1 hour while microwave-assisted epoxidation was completed ...
- Ullah, Aman, et al. ; Jin, Liejiang; Geng, Keyu; Arshad, Muhammad; Ahmadi, Reza; Show all 5 Authors
- ACS sustainable chemistry 2017 v.5 no.11 pp. 9793-9801
- Fourier transform infrared spectroscopy; alkenes; biopolyesters; catalysts; differential scanning calorimetry; fatty acid methyl esters; gas chromatography-mass spectrometry; gel chromatography; heat; ionization; melting point; microwave radiation; molecular weight; nuclear magnetic resonance spectroscopy; oleic acid; plant fats and oils; polymerization; temperature; thermogravimetry
- ... Self-metathesis of fatty acid methyl esters (FAMEs) from natural oils and commercial oleic acid was carried out using a microwave reactor in solvent-free conditions. Self-metathesis products were further identified and quantified by gas chromatography–mass spectroscopy (GC–MS) and gas chromatography–flame ionization detector (GC–FID). Conversion of ∼50% was achieved within a short span (∼2 min) in ...
- Ullah, Aman, et al. ; Acero-Lopez, Alexandra; Offengenden, Marina; Jung, Stephanie; Wu, Jianping; Show all 5 Authors
- Food chemistry 2012 v.135 no.4 pp. 2245-2252
- Fourier transform infrared spectroscopy; denaturation; differential scanning calorimetry; enthalpy; fluorescence; high pressure treatment; hydrophobicity; pH; sulfhydryl groups; temperature
- ... High pressure processing of ovotransferrin was carried out to study the structural and physiochemical changes of ovotransferrin under various pressure levels. At pH 8 and pressures higher than 200MPa, a decrease in total sulfhydryl groups and an increase in surface hydrophobicity were observed along with a partial aggregation. A gradual shift of denaturation peak towards higher temperature was not ...