Characterization and effect of Moringa Oleifera Lam. antioxidant additive on the storage stability of Jatropha biodiesel

Jeyakumar, Nagarajan; Narayanasamy, Bose; Balasubramanian, Dhinesh; Viswanathan, Karthickeyan

doi:10.1016/j.fuel.2020.118614

Cited by 40 publications

(15 citation statements)

References 44 publications

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“…Ref. [39] also obtained similar results with four endothermic peaks for the Moringa oleifera leaf powder antioxidant.…”

Section: Thermal Properties Of Molp and Sdmolpssupporting

confidence: 66%

“…The high enthalpy indicates that more energy was expended in the disruption of noncovalent bonds. Jeyakumar et al [39] reported similar results with an enthalpy of 177.4 J/g at 71.34 • C for MOLP antioxidants. The second peak was observed at approximately 159.35 • C, showing an onset at 128.23 • C and end set at 179.97 • C with Tg of 141.97 • C and fusion enthalpy 5.0 J/g.…”

Section: Thermal Properties Of Molp and Sdmolpssupporting

confidence: 55%

“…The high enthalpy indicates that more energy was expended in the disruption of noncovalent bonds. Jeyakumar et al [39] reported similar results with an enthalpy of 177.4 J/g at 71. 34…”

Section: Thermal Properties Of Molp and Sdmolpsmentioning

confidence: 54%

“…Moreover, this stage might also occur due to the decomposition of fatty acids, for example, oleic acid, which has a boiling point of 360 • C [30]. Since MOLP is a good source of phenolic compounds and phytochemicals, the second stage may further denote the decomposition of remaining phytochemical compounds such as kaempferol (276-278 • C), quercetin (316 • C), gallic acid (26 • C), and tannic acid (above 200 • C), thus indicating the presence of antioxidant components in Moringa oleifera leaves [39]. In addition, 200-450 • C is associated with the degradation of cellulose and hemicellulose [48].…”

Section: Thermogravimetric Properties Of Molp and Sdmolpsmentioning

confidence: 99%

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Characterization of Novel Solid Dispersions of Moringa oleifera Leaf Powder Using Thermo-Analytical Techniques

Tafu

Jideani

2021

Processes

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Moringa oleifera leaf powder (MOLP) has been identified as the most important functional ingredient owing to its rich nutritional profile and healthy effects. The solubility and functional properties of this ingredient can be enhanced through solid dispersion technology. This study aimed to investigate the effects of polyethylene glycols (PEGs) 4000 and 6000 as hydrophilic carriers and solid dispersion techniques (freeze-drying, melting, solvent evaporation, and microwave irradiation) on the crystallinity and thermal stability of solid-dispersed Moringa oleifera leaf powders (SDMOLPs). SDMOLPs were dully characterized using powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). The PXRD results revealed that the solid dispersions were partially amorphous with strong diffraction peaks at 2θ values of 19° and 23°. The calorimetric and thermogravimetric curves showed that PEGs conferred greater stability on the dispersions. The FTIR studyrevealed the existence of strong intermolecular hydrogen bond interactions between MOLP and PEG functional groups. MOLP solid dispersions may be useful in functional foods and beverages and nutraceutical formulations.

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“…Ref. [39] also obtained similar results with four endothermic peaks for the Moringa oleifera leaf powder antioxidant.…”

Section: Thermal Properties Of Molp and Sdmolpssupporting

confidence: 66%

Section: Thermal Properties Of Molp and Sdmolpssupporting

confidence: 55%

“…The high enthalpy indicates that more energy was expended in the disruption of noncovalent bonds. Jeyakumar et al [39] reported similar results with an enthalpy of 177.4 J/g at 71. 34…”

Section: Thermal Properties Of Molp and Sdmolpsmentioning

confidence: 54%

Section: Thermogravimetric Properties Of Molp and Sdmolpsmentioning

confidence: 99%

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Characterization of Novel Solid Dispersions of Moringa oleifera Leaf Powder Using Thermo-Analytical Techniques

Tafu

Jideani

2021

Processes

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“…To start the trial for each run, the engine was allowed to run for 5-10 mins with the respective fuel before the recording of the readings [53][54][55]. Every test done was repeated thrice, and the average values were taken for the plotting of the graph, and so repeatability was ensured [51][52]. Table 7 represents the design matrix of test fuels used along with their blending percentage and EGR conditions.…”

Section: Gcms Results Of Waste Cooking Oil and Biofuelmentioning

confidence: 99%

Numerical and experimental evaluation on the pooled effect of waste cooking oil biodiesel/diesel blends and exhaust gas recirculation in a twin-cylinder diesel engine

Balasubramanian

Hoang

Venugopal³

et al. 2021

Fuel

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Experimental evaluation over the effects of natural antioxidants on oxidation stability of binary biodiesel blend

Jeyakumar¹,

Huang

Balasubramanian

et al. 2022

Intl J of Energy Research

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Summary Prolonged storage of biodiesel leads to deterioration of fuel properties and its usage in engines results in drop‐in performance characteristics. The present study deals with the effect of natural antioxidants on the storage stability of binary biodiesel blend of Jatropha biodiesel and lemongrass oil, which are synthesized through transesterification and steam distillation process, respectively. Natural antioxidants such as sesame, horse gram, sweet basil, coffee, and peas were employed in the current study. Thermal analysis of the antioxidants was carried out utilizing differential scanning calorimetry and thermogravimetric analysis to study the effect of temperature on antioxidants. Ethanol extract of natural antioxidants was prepared at various concentrations such as 500, 1000, and 1500 ppm. Total phenol content in the antioxidant extracts was determined through the Folin‐Ciocalteu method in terms of gallic acid equivalent (GAE). The oxidation stability of fuel samples with the addition of antioxidant extracts was estimated by the Rancimat method in terms of the induction period (IP). As a result, the scavenging effect in percentage for sesame, horse gram, sweet basil, coffee, and peas were 88.76%, 86.51%, 75.28%, 74.15%, and 70.78% at 1500 ppm, respectively. Besides, the total phenol content (mg GAE/100 g) for sesame, horse gram, sweet basil, coffee, and peas observed are 97.37, 39.99, 35.07, 30.15, and 25.25, respectively. More interestingly, adding antioxidants extracted from sesame, horse gram, sweet basil, coffee, and peas could increase the IP of the Jatropha biodiesel‐lemongrass oil binary blend to 9.92, 8.10, 7.74, 7.10, and 4.10 hours, respectively compared to the case of binary blend without antioxidant (only 2.06 hours). In general, the inclusion of natural antioxidants additives increased the oxidation stability of biodiesel, promoting its prolonged storage, and the overall effectiveness of selected natural antioxidants was found to be in the order of sesame > horse gram > sweet basil > coffee > peas. Highlights The incorporation of a binary biodiesel blend reduces the cost of biodiesel synthesis. Replacement of synthetic antioxidant additive with natural antioxidant additive. Natural antioxidant addition enhances the storage stability of binary biodiesel blend.

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Characterization and effect of Moringa Oleifera Lam. antioxidant additive on the storage stability of Jatropha biodiesel

Cited by 40 publications

References 44 publications

Characterization of Novel Solid Dispersions of Moringa oleifera Leaf Powder Using Thermo-Analytical Techniques

Characterization of Novel Solid Dispersions of Moringa oleifera Leaf Powder Using Thermo-Analytical Techniques

Numerical and experimental evaluation on the pooled effect of waste cooking oil biodiesel/diesel blends and exhaust gas recirculation in a twin-cylinder diesel engine

Experimental evaluation over the effects of natural antioxidants on oxidation stability of binary biodiesel blend

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