Comparative spectroscopic analysis, performance and emissions evaluation of Madhuca longifolia and Jatropha curcas produced biodiesel

Author(s):  
Rajeshwari Chatterjee ◽  
Sanat Kumar Mukherjee ◽  
Biswajit Paul ◽  
Somnath Chattopadhyaya
Metabolites ◽  
2014 ◽  
Vol 4 (4) ◽  
pp. 1018-1033 ◽  
Author(s):  
Takanori Komatsu ◽  
Risa Ohishi ◽  
Amiu Shino ◽  
Kinya Akashi ◽  
Jun Kikuchi

2012 ◽  
Vol 10 (1) ◽  
pp. 9-11
Author(s):  
Dipankar Das Gupta ◽  
Md Enamul Haque ◽  
Md Nahidul Islam ◽  
Shafiqur Rahman ◽  
AKM Mahbub Hasan ◽  
...  

The plant Jatropha curcas grows well in different parts of Bangladesh and used in many medicinal purposes locally. The alkaloid atherospermidine and a steroid stigmasterol were isolated from the ethyl acetate extract of the stem bark of J. curcas by a combination of column and preparative thin-layer chromatography over silica gel. The structures of these compounds were determined by spectroscopic analysis (UV, IR, 1H NMR and 13C NMR) and by comparison with published data. This is the first report of isolation of the alkaloid atherospermidine from this plant. DOI: http://dx.doi.org/10.3329/dujps.v10i1.10009 DUJPS 2011; 10(1): 9-11


2012 ◽  
Vol 67 (2) ◽  
pp. 176-180 ◽  
Author(s):  
Jun Ju Xu ◽  
Ning Hua Tana

Four new lignans, curcasinlignan A (1), curcasinlignan B (2), curcasinlignan C (3), and curcasinlignan D (4), together with eight known compounds, (±)-rel-(2α,3β )-7-Omethylcedrusin (5), (±)-7R∗,8S∗-5-methoxydihydrodehydroconiferyl alcohol (6), dehydrodiisoeugeno1 (7), (threo)-1-(4-hydroxy-3-methoxyphenyl)-2-(4-formyl-2-methoxy-phenoxy)-propane- 1,3-diol (8), (±)-machilin D (9), (+)-pinoresinol (10), 5ʹ-methoxypropacin (11), and hemidesmin-2 (12), were isolated from the aerial parts of Jatropha curcas. Their structures were established on the basis of extensive spectroscopic analysis.


2021 ◽  
Author(s):  
Rajeshwari Chatterjee ◽  
Sanat Kumar Mukherjee ◽  
Biswajit Paul ◽  
Somnath Chattopadhyaya

Abstract In order to fulfil the growing need to replace fossil fuels, investigations exploring the production of biodiesel from agricultural biomass have gained attention. The purpose behind this study is to examine the efficiency of biodiesel extracted from Madhuca longifolia and Jatropha curcas by means of pre-treatment followed by two step acid-base homogeneous catalyst method. The Madhuca and Jatropha biodiesels were blended with diesel at different percentages. Fourier Transform Infrared Spectroscopy (FTIR) showed a strong presence of fatty acid profile, and triglyceride ester linkage at 1744 cm− 1. UV–Vis spectra confirmed the presence of conjugated dienes in the extracted biodiesels. UV absorbance at 320 nm decreases linearly with blend percentage. 1HNMR and 13C NMR confirmed the presence of methyl ester moiety at 3.6 ppm and methoxy carbon at 51.2 ppm in biodiesel distinguishing it from diesel. Raman spectra exhibited C = O stretching at 1725 cm− 1 indicating conversion of Madhuca and Jatropha oil into biodiesel. The engine performance and emission tests of these biodiesels were evaluated. In the engine performance tests, the variations of brake specific fuel consumption (BSFC), exhaust gas temperature (EGT), and brake thermal efficiency (BTE) versus brake power were studied. The emission tests of different blends were done in terms of carbon mono-oxide, nitrous oxide, and unburnt hydrocarbon (UHC). The Jatropha biodiesel exhibited less mean BSFC, EGT and emitted less CO and UHC than Madhuca biodiesel. The average decrease in BTE was more in Jatropha biodiesel than Madhuca biodiesel.


2020 ◽  
Vol 12 (3) ◽  
pp. 451-455
Author(s):  
Muhammad Alam Zaib Khan ◽  
Muhammad Ali Kamran ◽  
Zuhaib Ali Khan ◽  
Usman Ghani ◽  
Tufail Habib

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