Castor leaf mediated synthesis of iron nanoparticles for evaluating catalytic effects in transesterification of castor oil

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 9261-9269 ◽  
Author(s):  
Mookan Rengasamy ◽  
Krishnasamy Anbalagan ◽  
Shanmugam Kodhaiyolii ◽  
Velan Pugalenthi
Keyword(s):  
Castor Oil ◽  
Leaf Extract ◽  
Iron Nanoparticles ◽  
Ricinus Communis ◽  
Biodiesel Production ◽  
Catalytic Effects

A castor (Ricinus communis) leaf extract mediated process was developed for the synthesis of iron nanoparticles. The phytosynthesized iron nanoparticles were used as a catalyst for castor biodiesel production.

A re-evaluation of castor (Ricinus communis L.) as a crop plant.

2014 ◽  
Vol 9 (038) ◽  
Author(s):  
Kammili Anjani Kammili Anjani
Keyword(s):  
Castor Oil ◽  
Crop Production ◽  
Seed Oil ◽  
Ricinus Communis ◽  
Biodiesel Production ◽  
Oilseed Crop ◽  
Ricinus Communis L ◽  
Global Demand ◽  
Increasing Demand ◽  
Returns On Investment

Abstract Castor (Ricinus communis L.) has been transformed from a wasteland colonizer to an important industrial oilseed crop. Its seed oil is one of the most sought-after vegetable oils because of its rich properties and variety of end-users. Castor is an ancient crop but its production now has been limited mainly to India, China and Brazil, for many reasons. Castor oil is a hot market commodity product. It has been recently recognized as an efficient feedstock for biodiesel production. Increasing demand world over for biofuel resources and many recently identified industrial uses of castor oil have escalated castor oil demand. Global demand for castor oil is rising constantly at 3-5% per annum. In the last decade, many countries have started making serious exploratory efforts at growing castor as there is a tremendous scope to establish castor as a supplementary crop production option to farmers and to provide significant returns on investment given high global demand for castor oil. In view of the increasing worldwide interest in castor oil, this review evaluates the global scenario of castor cultivation, exports and imports of castor oil, new interests in castor oil and genetic improvement in productivity. In addition, the current research challenges and priorities have been discussed in the review.

scholarly journals Comparative Analysis of Biodiesel Production from Five Varieties of Castor Beans

2020 ◽  
pp. 9-22
Author(s):  
Julius Kewir Tangka ◽  
Djousse Kanouo Boris Merlain ◽  
Dontsa Tsafack Bertold Donald ◽  
Max Croft ◽  
Vincent Kitio
Keyword(s):  
Acetic Acid ◽  
Comparative Analysis ◽  
Methyl Ester ◽  
Comparative Study ◽  
Castor Oil ◽  
Kinematic Viscosity ◽  
Ricinus Communis ◽  
Hydraulic Press ◽  
Biodiesel Production ◽  
Significant Difference

A comparative study was conducted to estimate biodiesel productivity of five varieties of castor beans: Ricinus communis zanzibariensis {white black} (castor 1), Ricinus communis sanguineus (castor 2), Ricinus communis carmencita (castor 3), Ricinus communis zanzibariensis {dark black} (castor 4) and Ricinus communis {black Tanzania}(castor 5). The castor beans were preheated to a temperature between 22 and 33 ° C and then pressed with a manual hydraulic press, under 170 bars. The oil obtained was subjected to the transesterification reaction with methanol (99.98% pure) in a proportion of 5: 1 in the presence of sodium hydroxide as a catalyst (10,672g) for 02 hours at temperature between 60 and 70 °C. Purification was performed by reacting the methyl ester formed with heated water (55 °C) and acetic acid. The density, the kinematic viscosity at 21 ° C and the proportion of residual soap were determined later. The results for five castor varieties showed that the oil yields varied from 24 to 26.96 %; the volume of methyl ester was higher with castor 4 and lower with castor 5 but there was no significant difference in the biodiesel yields. Castor 2 has the best yield of biodiesel (93.5%), followed by castor 5 (92.5%), castor 3 (91%), castor 1 (90.75 %) and castor 4 (90%).  Therefore castor oil 2 has a better potential for biodiesel production.

Transesterification of non-edible castor oil (Ricinus communis L.) from Mexico for biodiesel production: a physicochemical characterization

Biofuels ◽  
2020 ◽  
pp. 1-10
Author(s):  
Verónica Ávila Vázquez ◽  
Ranulfo Aarón Díaz Estrada ◽  
Miguel Mauricio Aguilera Flores ◽  
Carlos Escamilla Alvarado ◽  
Hans Christian Correa Aguado
Keyword(s):  
Castor Oil ◽  
Ricinus Communis ◽  
Physicochemical Characterization ◽  
Biodiesel Production ◽  
Ricinus Communis L

scholarly journals Hematological and biochemical changes in rabbits exposed to castor oil (Ricinus communis) under experimental conditions

2017 ◽  
Vol 28 (1) ◽  
pp. 19
Author(s):  
Sahar M. Ahmed
Keyword(s):  
Castor Oil ◽  
Leaf Extract ◽  
Ricinus Communis ◽  
Total Serum ◽  
Control Group ◽  
Mean Corpuscular Hemoglobin ◽  
Biochemical Tests ◽  
Experimental Conditions ◽  
Group I ◽  
Hb Concentration

In the last few decades there has been an exponential growth in the field of herbal medicine. One such medicinal plant is Ricinus communis (Euphorbiaceae), which is commonly known as castor. All parts of the plant are important phloem, bark, leaves, flowers, seed and oil. The study was conducted on 15 mature rabbitsof either sex of 1-2 kg body weight and 1-2 years old. The animals were divided into three groups of 5 animals each. Animals of group I were exposed orally to ricin extract at a dose rate of 0.5 mg /kg b.wt. daily for 14 days, while those of group II were exposed orally to aqueous leaves extract 0.5mg /kg b.wt daily for 14 day, mean while those of group III were left as a control group not exposed. The dependent parameters in the study were hemoglobin (Hb) concentration, total erythrocytes count, packed cells volume (PCV%), erythrocytes indices mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), Total and differential leucocytes count (TLC and DLC), in addition to some biochemical tests of blood serum which obtained at day 14th post exposure. The results of the study were revealed that the ricin extract and leaf extract exhibited an effects on hematological pictures as the erythrocytes counts, erythrocytes indices, Hb concentration and PCV% decreased and the obvious effects were in the 14th day. Ricin extract was less effects on many dependent parameters in comparison with aqueous leaf extract. Total leucocytes count, neutrophils % was increased in both ricin and leaf extract, and the increasing were higher in the 7th day in Ricin extract group. The lymphocytes% was decreased. While monocytes, eosinophils, and basophils % did not show any significant changes in all groups. Neutrophil /lymphocyte (N/l), and monocyte /lymphocyte (M/l) increased in both exposed groups. Cholesterol (Chol), Triglyceride (TG)were increased, while total protein (TP)was decreased, Albumin (Alb), Cortisol (Cort), Total serum bilirubin (TSB) and Alanine aminotransferase (ALT)did not changed. Aspartate aminotransferase (AST) value was increased, while Adenosine phosphatase (AP) value was deceased. In conclusion castor oil due to its content of ricin exhibit an effects on hematological and biochemical parameters that depended in the study, and the leaves extract was higher than seed extract in its effects.

scholarly journals Optimization of biodiesel production from castor oil by response surface methodology

2017 ◽  
Vol 33 (1) ◽  
pp. 66
Author(s):  
A. Garba ◽  
M. M. Abarshi ◽  
M. B. Shuaib ◽  
R. Sulaiman
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Castor Oil ◽  
Biodiesel Production

scholarly journals Biodiesel Production from Melia azedarach and Ricinus communis Oil by Transesterification Process

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 427 ◽  
Author(s):  
Muhammad Awais ◽  
Sa’ed A Musmar ◽  
Faryal Kabir ◽  
Iram Batool ◽  
Muhammad Asif Rasheed ◽  
...  
Keyword(s):  
Ricinus Communis ◽  
Cost Effective ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Melia Azedarach ◽  
Renewable Fuel ◽  
Animal Fats ◽  
Edible Crops ◽  
American Society

Biodiesel is a renewable fuel usually produced from vegetable oils and animal fats. This study investigates the extraction of oil and its conversion into biodiesel by base-catalyzed transesterification. Firstly, the effect of various solvents (methanol, n-hexane, chloroform, di-ethyl ether) on extraction of oil from non-edible crops, such as R. communis and M. azedarach, were examined. It was observed that a higher concentration of oil was obtained from R. communis (43.6%) as compared to M. azedarach (35.6%) by using methanol and n-hexane, respectively. The extracted oils were subjected to NaOH (1%) catalyzed transesterification by analyzing the effect of oil/methanol molar ratio (1:4, 1:6, 1:8 and 1:10) and varying temperature (20, 40, 60 and 80 °C) for 2.5 h of reaction time. M. azedarach yielded 88% and R. communis yielded 93% biodiesel in 1:6 and 1:8 molar concentrations at ambient temperature whereas, 60 °C was selected as an optimum temperature, giving 90% (M. azedarach) and 94% (R. communis) biodiesel. The extracted oil and biodiesel were characterized for various parameters and most of the properties fulfilled the American Society for Testing and Materials (ASTM) standard biodiesel. The further characterization of fatty acids was done by Gas Chromatography/Mass Spectrometer (GC/MS) and oleic acid was found to be dominant in M. azedarach (61.5%) and R. communis contained ricinoleic acid (75.53%). Furthermore, the functional groups were analyzed by Fourier Transform Infrared Spectroscopy. The results suggested that both of the oils are easily available and can be used for commercial biodiesel production at a cost-effective scale.

scholarly journals Kinetic and regulatory properties of cytosolic pyruvate kinase from germinating castor oil seeds

1991 ◽  
Vol 279 (2) ◽  
pp. 495-501 ◽  
Author(s):  
F E Podestá ◽  
W C Plaxton
Keyword(s):  
Pyruvate Kinase ◽  
Castor Oil ◽  
Mixed Type ◽  
Competitive Inhibition ◽  
Ricinus Communis ◽  
Cytosolic Ph ◽  
Oil Seeds ◽  
Saturation Kinetics ◽  
Regulatory Properties

The kinetic and regulatory properties of cytosolic pyruvate kinase (PKc) isolated from endosperm of germinating castor oil seeds (Ricinus communis L.) have been studied. Optimal efficiency in substrate utilization (in terms of Vmax/Km for phosphoenolpyruvate or ADP) occurred between pH 6.7 and 7.4. Enzyme activity was absolutely dependent on the presence of a bivalent and a univalent metal cation, with Mg2+ and K+ fulfilling this requirement. Mg2+ binding showed positive and negative co-operativity at pH 6.5 (h = 1.6) and pH 7.2 (h = 0.69) respectively. Hyperbolic saturation kinetics were observed with phosphoenolpyruvate (PEP) and K+, whereas ADP acted as a mixed-type inhibitor over 1 mM. Glycerol (10%, v/v) increased the S0.5(ADP) 2.3-fold and altered the pattern of nucleotide binding from hyperbolic (h = 1.0) to sigmoidal (h = 1.79) without modifying PEP saturation kinetics. No activators were identified. ATP, AMP, isocitrate, 2-oxoglutarate, malate, 2-phosphoglycerate, 2,3-bisphosphoglycerate, 3-phosphoglycerate, glycerol 3-phosphate and phosphoglycolate were the most effective inhibitors. These metabolites yielded additive inhibition when tested in pairs. ATP and 3-phosphoglycerate were mixed-type inhibitors with respect to PEP, whereas competitive inhibition was observed for other inhibitors. Inhibition by malate, 2-oxoglutarate, phosphorylated triose sugars or phosphoglycolate was far more pronounced at pH 7.2 than at pH 6.5. Although 32P-labelling studies revealed that extensive phosphorylation in vivo of soluble endosperm proteins occurred between days 3 and 5 of seed germination, no alteration in the 32P-labelling pattern of 5-day-germinated endosperm was observed after 30 min of anaerobiosis. Moreover, no evidence was obtained that PKc was a phosphoprotein in aerobic or anoxic endosperms. It is proposed that endosperm PKc activity of germinating castor seeds is enhanced after anaerobiosis through concerted decreases in ATP levels, cytosolic pH and concentrations of several key inhibitors.

Castor Oil ( Ricinus communis )

2022 ◽  
pp. 51-78
Author(s):  
Is Fatimah ◽  
Suresh Sagadevan ◽  
Baranya Murugan ◽  
Oki Muraza
Keyword(s):  
Castor Oil ◽  
Ricinus Communis
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