Properties of sodium phosphate-hydroxy ethanolamide gemini surfactant synthesized from the seed oil of Luffa cylindrical

Journal of Acute Disease

Otuechere

Oteglolade

et al. 2015

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A B S T R A C TObjective: To evaluate the safety profile and antioxidant activity of fatty hydroxamic acid (FHA) from the seed oil of Cyperus esculentus (C. esculentus). Methods: FHA was synthesized from the seed oil of C. esculentus via a two-step reaction system. The FHA was later subjected to antioxidant activity test using 2, 2-diphenyl-1-picyrl hydrazyl assay. Additionally, adult male Wistar rats were randomly assigned to four groups of five rats each and were orally administered with FHA at 0, 5, 15 and 50 mg/kg for seven days. Clinical observations and serum biochemical parameters were assessed to monitor treatment-related adverse effects in the rats. Results: Fourier transform infrared spectra showed that FHA was synthesised from the seed oil of C. esculentus. The antioxidant property of FHA increased as the concentration reduced below 0.05 mg/mL. Result of oral administration of FHA revealed no adverse effect levels at the dose of 5 mg/kg/day. However, the adverse effects seen in rats receiving 15 mg/kg/day (the least observed adverse effect level) were significant increase in alkaline phosphatase activity, triglycerides, and creatinine levels. Moderate hyperalbuminemia and hypoalbuminemia resulted in an increased albumin/globulin ratio. These effects might be the result of a physiological response to exposure to a very high level of FHA which is not part of the normal diet, and are most likely not toxicologically relevant. Conclusions: C. esculentus has been presented as a potential source of feed stock for the synthesis of a relatively cheap and non toxic FHA which has antioxidant and free-radical scavenging activity.

Section: Methyl Esters From the Seed Oil Of C Esculentusmentioning

confidence: 99%

Evaluation of the safety profile and antioxidant activity of fatty hydroxamic acid from underutilized seed oil of Cyperus esculentus

Journal of Acute Disease

Otuechere

Oteglolade

et al. 2015

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“…The methyl esters formed were finally hydroxylated using performic acid produced in situ (Adewuyi et al 2013). Methyl esters of K. senegalensis (0.0482 mol) and formic acid (0.106 mol) were poured into a three-necked round-bottom flask; the mixture was gently cooled to a temperature of 15°C.…”

Section: Hydroxylated Methyl Esters From the Seed Oil Of K Senegalensismentioning

confidence: 99%

Synthesis of hydroxylated fatty amide from underutilized seed oil of Khaya senegalensis: a potential green inhibitor of corrosion in aluminum

Oderinde

2018

J Anal Sci Technol

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Background: Corrosion is a serious problem all over the world. Most currently used approach to control corrosion have short comings which necessitates the search for novel materials that are green, cheap, from renewable source, and eco-friendly that can be used to combat this problem of corrosion control. Method: Khaya senegalensis fatty hydroxylamide (KSFA) was synthesized from K. senegalensis seed oil via simple reaction route involving esterification, transesterification, hydroxylation, and amidation reaction. KSFA was characterized using Fourier-transform infrared (FTIR), nuclear magnetic resonance (1 HNMR), CHN elemental analyzer, particle size distribution (PSD), X-ray diffractometer, zeta potential, thermogravimetric analysis (TG), thermogravimetricmass spectrometer (TG-MS), and scanning electron micrograph (SEM) coupled with energy dispersion spectroscopy (EDS). Inhibitory effect of KSFA on corrosion of aluminum (Al) in 0.5 M HCl was studied at different concentrations of KSFA and temperatures using weight loss method. Result: Result from gas chromatography (GC) revealed oil of K. senegalensis to predominantly contain C18:1 (68.46%) fatty acid. Hydroxyl and amide functional groups present in KSFA were confirmed by FTIR and 1 HNMR. TG analysis revealed loss in mass around 80-190, 200-450, and above 450°C while TG-MS revealed five different masses with m/z values 16, 17, 18, 28, and 44. Corrosion inhibition capacity of KSFA was by surface adsorption, which is spontaneous, and physisorption and described by Langmuir isotherm. The corrosion inhibition efficiency of KSFA increased with increase in its concentration while its corrosion rate reduced with increase in concentration. Conclusion: The inhibition efficiency of 90.43% exhibited by KSFA and the fact that KSFA was synthesized via nonhazardous process from a renewable sourced biomass is an indication that KSFA is a potential green and efficient inhibitor of corrosion in aluminum. KSFA is simple to use as an inhibitor and easy to prepare.

“…Further chemicals and all solvents used in this study were of analytical grade and were purchased from VWR International GmbH, Darmstadt. The dried seeds of Terminalia catappa were later extracted with n-hexane for 10 h using a soxhlet extractor [17].…”

Section: Methodsmentioning

confidence: 99%

Sucrose fatty esters from underutilized seed oil of Terminalia catappa as potential steel corrosion inhibitor in acidic medium

J. Electrochem. Sci. Eng.

Bello

Oderinde

2016

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